1 // SPDX-License-Identifier: GPL-2.0-only
3 * drivers/soc/tegra/pmc.c
5 * Copyright (c) 2010 Google, Inc
6 * Copyright (c) 2018-2022, NVIDIA CORPORATION. All rights reserved.
9 * Colin Cross <ccross@google.com>
12 #define pr_fmt(fmt) "tegra-pmc: " fmt
14 #include <linux/arm-smccc.h>
15 #include <linux/clk.h>
16 #include <linux/clk-provider.h>
17 #include <linux/clkdev.h>
18 #include <linux/clk/clk-conf.h>
19 #include <linux/clk/tegra.h>
20 #include <linux/debugfs.h>
21 #include <linux/delay.h>
22 #include <linux/device.h>
23 #include <linux/err.h>
24 #include <linux/export.h>
25 #include <linux/init.h>
27 #include <linux/iopoll.h>
28 #include <linux/irqdomain.h>
29 #include <linux/irq.h>
30 #include <linux/kernel.h>
31 #include <linux/of_address.h>
32 #include <linux/of_clk.h>
34 #include <linux/of_irq.h>
35 #include <linux/of_platform.h>
36 #include <linux/pinctrl/pinconf-generic.h>
37 #include <linux/pinctrl/pinconf.h>
38 #include <linux/pinctrl/pinctrl.h>
39 #include <linux/platform_device.h>
40 #include <linux/pm_domain.h>
41 #include <linux/pm_opp.h>
42 #include <linux/power_supply.h>
43 #include <linux/reboot.h>
44 #include <linux/regmap.h>
45 #include <linux/reset.h>
46 #include <linux/seq_file.h>
47 #include <linux/slab.h>
48 #include <linux/spinlock.h>
50 #include <soc/tegra/common.h>
51 #include <soc/tegra/fuse.h>
52 #include <soc/tegra/pmc.h>
54 #include <dt-bindings/interrupt-controller/arm-gic.h>
55 #include <dt-bindings/pinctrl/pinctrl-tegra-io-pad.h>
56 #include <dt-bindings/gpio/tegra186-gpio.h>
57 #include <dt-bindings/gpio/tegra194-gpio.h>
58 #include <dt-bindings/gpio/tegra234-gpio.h>
59 #include <dt-bindings/soc/tegra-pmc.h>
62 #define PMC_CNTRL_INTR_POLARITY BIT(17) /* inverts INTR polarity */
63 #define PMC_CNTRL_CPU_PWRREQ_OE BIT(16) /* CPU pwr req enable */
64 #define PMC_CNTRL_CPU_PWRREQ_POLARITY BIT(15) /* CPU pwr req polarity */
65 #define PMC_CNTRL_SIDE_EFFECT_LP0 BIT(14) /* LP0 when CPU pwr gated */
66 #define PMC_CNTRL_SYSCLK_OE BIT(11) /* system clock enable */
67 #define PMC_CNTRL_SYSCLK_POLARITY BIT(10) /* sys clk polarity */
68 #define PMC_CNTRL_PWRREQ_POLARITY BIT(8)
69 #define PMC_CNTRL_BLINK_EN 7
70 #define PMC_CNTRL_MAIN_RST BIT(4)
72 #define PMC_WAKE_MASK 0x0c
73 #define PMC_WAKE_LEVEL 0x10
74 #define PMC_WAKE_STATUS 0x14
75 #define PMC_SW_WAKE_STATUS 0x18
76 #define PMC_DPD_PADS_ORIDE 0x1c
77 #define PMC_DPD_PADS_ORIDE_BLINK 20
79 #define DPD_SAMPLE 0x020
80 #define DPD_SAMPLE_ENABLE BIT(0)
81 #define DPD_SAMPLE_DISABLE (0 << 0)
83 #define PWRGATE_TOGGLE 0x30
84 #define PWRGATE_TOGGLE_START BIT(8)
86 #define REMOVE_CLAMPING 0x34
88 #define PWRGATE_STATUS 0x38
90 #define PMC_BLINK_TIMER 0x40
91 #define PMC_IMPL_E_33V_PWR 0x40
93 #define PMC_PWR_DET 0x48
95 #define PMC_SCRATCH0_MODE_RECOVERY BIT(31)
96 #define PMC_SCRATCH0_MODE_BOOTLOADER BIT(30)
97 #define PMC_SCRATCH0_MODE_RCM BIT(1)
98 #define PMC_SCRATCH0_MODE_MASK (PMC_SCRATCH0_MODE_RECOVERY | \
99 PMC_SCRATCH0_MODE_BOOTLOADER | \
100 PMC_SCRATCH0_MODE_RCM)
102 #define PMC_CPUPWRGOOD_TIMER 0xc8
103 #define PMC_CPUPWROFF_TIMER 0xcc
104 #define PMC_COREPWRGOOD_TIMER 0x3c
105 #define PMC_COREPWROFF_TIMER 0xe0
107 #define PMC_PWR_DET_VALUE 0xe4
109 #define PMC_USB_DEBOUNCE_DEL 0xec
110 #define PMC_USB_AO 0xf0
112 #define PMC_SCRATCH37 0x130
113 #define PMC_SCRATCH41 0x140
115 #define PMC_WAKE2_MASK 0x160
116 #define PMC_WAKE2_LEVEL 0x164
117 #define PMC_WAKE2_STATUS 0x168
118 #define PMC_SW_WAKE2_STATUS 0x16c
120 #define PMC_CLK_OUT_CNTRL 0x1a8
121 #define PMC_CLK_OUT_MUX_MASK GENMASK(1, 0)
122 #define PMC_SENSOR_CTRL 0x1b0
123 #define PMC_SENSOR_CTRL_SCRATCH_WRITE BIT(2)
124 #define PMC_SENSOR_CTRL_ENABLE_RST BIT(1)
126 #define PMC_RST_STATUS_POR 0
127 #define PMC_RST_STATUS_WATCHDOG 1
128 #define PMC_RST_STATUS_SENSOR 2
129 #define PMC_RST_STATUS_SW_MAIN 3
130 #define PMC_RST_STATUS_LP0 4
131 #define PMC_RST_STATUS_AOTAG 5
133 #define IO_DPD_REQ 0x1b8
134 #define IO_DPD_REQ_CODE_IDLE (0U << 30)
135 #define IO_DPD_REQ_CODE_OFF (1U << 30)
136 #define IO_DPD_REQ_CODE_ON (2U << 30)
137 #define IO_DPD_REQ_CODE_MASK (3U << 30)
139 #define IO_DPD_STATUS 0x1bc
140 #define IO_DPD2_REQ 0x1c0
141 #define IO_DPD2_STATUS 0x1c4
142 #define SEL_DPD_TIM 0x1c8
144 #define PMC_UTMIP_UHSIC_TRIGGERS 0x1ec
145 #define PMC_UTMIP_UHSIC_SAVED_STATE 0x1f0
147 #define PMC_UTMIP_TERM_PAD_CFG 0x1f8
148 #define PMC_UTMIP_UHSIC_SLEEP_CFG 0x1fc
149 #define PMC_UTMIP_UHSIC_FAKE 0x218
151 #define PMC_SCRATCH54 0x258
152 #define PMC_SCRATCH54_DATA_SHIFT 8
153 #define PMC_SCRATCH54_ADDR_SHIFT 0
155 #define PMC_SCRATCH55 0x25c
156 #define PMC_SCRATCH55_RESET_TEGRA BIT(31)
157 #define PMC_SCRATCH55_CNTRL_ID_SHIFT 27
158 #define PMC_SCRATCH55_PINMUX_SHIFT 24
159 #define PMC_SCRATCH55_16BITOP BIT(15)
160 #define PMC_SCRATCH55_CHECKSUM_SHIFT 16
161 #define PMC_SCRATCH55_I2CSLV1_SHIFT 0
163 #define PMC_UTMIP_UHSIC_LINE_WAKEUP 0x26c
165 #define PMC_UTMIP_BIAS_MASTER_CNTRL 0x270
166 #define PMC_UTMIP_MASTER_CONFIG 0x274
167 #define PMC_UTMIP_UHSIC2_TRIGGERS 0x27c
168 #define PMC_UTMIP_MASTER2_CONFIG 0x29c
170 #define GPU_RG_CNTRL 0x2d4
172 #define PMC_UTMIP_PAD_CFG0 0x4c0
173 #define PMC_UTMIP_UHSIC_SLEEP_CFG1 0x4d0
174 #define PMC_UTMIP_SLEEPWALK_P3 0x4e0
175 /* Tegra186 and later */
176 #define WAKE_AOWAKE_CNTRL(x) (0x000 + ((x) << 2))
177 #define WAKE_AOWAKE_CNTRL_LEVEL (1 << 3)
178 #define WAKE_AOWAKE_MASK_W(x) (0x180 + ((x) << 2))
179 #define WAKE_AOWAKE_MASK_R(x) (0x300 + ((x) << 2))
180 #define WAKE_AOWAKE_STATUS_W(x) (0x30c + ((x) << 2))
181 #define WAKE_AOWAKE_STATUS_R(x) (0x48c + ((x) << 2))
182 #define WAKE_AOWAKE_TIER0_ROUTING(x) (0x4b4 + ((x) << 2))
183 #define WAKE_AOWAKE_TIER1_ROUTING(x) (0x4c0 + ((x) << 2))
184 #define WAKE_AOWAKE_TIER2_ROUTING(x) (0x4cc + ((x) << 2))
186 #define WAKE_AOWAKE_CTRL 0x4f4
187 #define WAKE_AOWAKE_CTRL_INTR_POLARITY BIT(0)
190 #define TEGRA_SMC_PMC 0xc2fffe00
191 #define TEGRA_SMC_PMC_READ 0xaa
192 #define TEGRA_SMC_PMC_WRITE 0xbb
201 #define to_pmc_clk(_hw) container_of(_hw, struct pmc_clk, hw)
203 struct pmc_clk_gate {
209 #define to_pmc_clk_gate(_hw) container_of(_hw, struct pmc_clk_gate, hw)
211 struct pmc_clk_init_data {
213 const char *const *parents;
220 static const char * const clk_out1_parents[] = { "osc", "osc_div2",
221 "osc_div4", "extern1",
224 static const char * const clk_out2_parents[] = { "osc", "osc_div2",
225 "osc_div4", "extern2",
228 static const char * const clk_out3_parents[] = { "osc", "osc_div2",
229 "osc_div4", "extern3",
232 static const struct pmc_clk_init_data tegra_pmc_clks_data[] = {
234 .name = "pmc_clk_out_1",
235 .parents = clk_out1_parents,
236 .num_parents = ARRAY_SIZE(clk_out1_parents),
237 .clk_id = TEGRA_PMC_CLK_OUT_1,
242 .name = "pmc_clk_out_2",
243 .parents = clk_out2_parents,
244 .num_parents = ARRAY_SIZE(clk_out2_parents),
245 .clk_id = TEGRA_PMC_CLK_OUT_2,
247 .force_en_shift = 10,
250 .name = "pmc_clk_out_3",
251 .parents = clk_out3_parents,
252 .num_parents = ARRAY_SIZE(clk_out3_parents),
253 .clk_id = TEGRA_PMC_CLK_OUT_3,
255 .force_en_shift = 18,
259 struct tegra_powergate {
260 struct generic_pm_domain genpd;
261 struct tegra_pmc *pmc;
264 unsigned int num_clks;
265 unsigned long *clk_rates;
266 struct reset_control *reset;
269 struct tegra_io_pad_soc {
270 enum tegra_io_pad id;
272 unsigned int voltage;
276 struct tegra_pmc_regs {
277 unsigned int scratch0;
278 unsigned int dpd_req;
279 unsigned int dpd_status;
280 unsigned int dpd2_req;
281 unsigned int dpd2_status;
282 unsigned int rst_status;
283 unsigned int rst_source_shift;
284 unsigned int rst_source_mask;
285 unsigned int rst_level_shift;
286 unsigned int rst_level_mask;
289 struct tegra_wake_event {
294 unsigned int instance;
299 #define TEGRA_WAKE_IRQ(_name, _id, _irq) \
305 .instance = UINT_MAX, \
310 #define TEGRA_WAKE_GPIO(_name, _id, _instance, _pin) \
316 .instance = _instance, \
321 struct tegra_pmc_soc {
322 unsigned int num_powergates;
323 const char *const *powergates;
324 unsigned int num_cpu_powergates;
325 const u8 *cpu_powergates;
327 bool has_tsense_reset;
329 bool needs_mbist_war;
330 bool has_impl_33v_pwr;
333 const struct tegra_io_pad_soc *io_pads;
334 unsigned int num_io_pads;
336 const struct pinctrl_pin_desc *pin_descs;
337 unsigned int num_pin_descs;
339 const struct tegra_pmc_regs *regs;
340 void (*init)(struct tegra_pmc *pmc);
341 void (*setup_irq_polarity)(struct tegra_pmc *pmc,
342 struct device_node *np,
344 int (*irq_set_wake)(struct irq_data *data, unsigned int on);
345 int (*irq_set_type)(struct irq_data *data, unsigned int type);
346 int (*powergate_set)(struct tegra_pmc *pmc, unsigned int id,
349 const char * const *reset_sources;
350 unsigned int num_reset_sources;
351 const char * const *reset_levels;
352 unsigned int num_reset_levels;
355 * These describe events that can wake the system from sleep (i.e.
356 * LP0 or SC7). Wakeup from other sleep states (such as LP1 or LP2)
357 * are dealt with in the LIC.
359 const struct tegra_wake_event *wake_events;
360 unsigned int num_wake_events;
362 const struct pmc_clk_init_data *pmc_clks_data;
363 unsigned int num_pmc_clks;
364 bool has_blink_output;
365 bool has_usb_sleepwalk;
366 bool supports_core_domain;
370 * struct tegra_pmc - NVIDIA Tegra PMC
371 * @dev: pointer to PMC device structure
372 * @base: pointer to I/O remapped register region
373 * @wake: pointer to I/O remapped region for WAKE registers
374 * @aotag: pointer to I/O remapped region for AOTAG registers
375 * @scratch: pointer to I/O remapped region for scratch registers
376 * @clk: pointer to pclk clock
377 * @soc: pointer to SoC data structure
378 * @tz_only: flag specifying if the PMC can only be accessed via TrustZone
379 * @debugfs: pointer to debugfs entry
380 * @rate: currently configured rate of pclk
381 * @suspend_mode: lowest suspend mode available
382 * @cpu_good_time: CPU power good time (in microseconds)
383 * @cpu_off_time: CPU power off time (in microsecends)
384 * @core_osc_time: core power good OSC time (in microseconds)
385 * @core_pmu_time: core power good PMU time (in microseconds)
386 * @core_off_time: core power off time (in microseconds)
387 * @corereq_high: core power request is active-high
388 * @sysclkreq_high: system clock request is active-high
389 * @combined_req: combined power request for CPU & core
390 * @cpu_pwr_good_en: CPU power good signal is enabled
391 * @lp0_vec_phys: physical base address of the LP0 warm boot code
392 * @lp0_vec_size: size of the LP0 warm boot code
393 * @powergates_available: Bitmap of available power gates
394 * @powergates_lock: mutex for power gate register access
395 * @pctl_dev: pin controller exposed by the PMC
396 * @domain: IRQ domain provided by the PMC
397 * @irq: chip implementation for the IRQ domain
398 * @clk_nb: pclk clock changes handler
399 * @core_domain_state_synced: flag marking the core domain's state as synced
400 * @core_domain_registered: flag marking the core domain as registered
407 void __iomem *scratch;
409 struct dentry *debugfs;
411 const struct tegra_pmc_soc *soc;
416 enum tegra_suspend_mode suspend_mode;
425 bool cpu_pwr_good_en;
428 DECLARE_BITMAP(powergates_available, TEGRA_POWERGATE_MAX);
430 struct mutex powergates_lock;
432 struct pinctrl_dev *pctl_dev;
434 struct irq_domain *domain;
437 struct notifier_block clk_nb;
439 bool core_domain_state_synced;
440 bool core_domain_registered;
443 static struct tegra_pmc *pmc = &(struct tegra_pmc) {
445 .suspend_mode = TEGRA_SUSPEND_NOT_READY,
448 static inline struct tegra_powergate *
449 to_powergate(struct generic_pm_domain *domain)
451 return container_of(domain, struct tegra_powergate, genpd);
454 static u32 tegra_pmc_readl(struct tegra_pmc *pmc, unsigned long offset)
456 struct arm_smccc_res res;
459 arm_smccc_smc(TEGRA_SMC_PMC, TEGRA_SMC_PMC_READ, offset, 0, 0,
463 dev_warn(pmc->dev, "%s(): SMC failed: %lu\n",
466 pr_warn("%s(): SMC failed: %lu\n", __func__,
473 return readl(pmc->base + offset);
476 static void tegra_pmc_writel(struct tegra_pmc *pmc, u32 value,
477 unsigned long offset)
479 struct arm_smccc_res res;
482 arm_smccc_smc(TEGRA_SMC_PMC, TEGRA_SMC_PMC_WRITE, offset,
483 value, 0, 0, 0, 0, &res);
486 dev_warn(pmc->dev, "%s(): SMC failed: %lu\n",
489 pr_warn("%s(): SMC failed: %lu\n", __func__,
493 writel(value, pmc->base + offset);
497 static u32 tegra_pmc_scratch_readl(struct tegra_pmc *pmc, unsigned long offset)
500 return tegra_pmc_readl(pmc, offset);
502 return readl(pmc->scratch + offset);
505 static void tegra_pmc_scratch_writel(struct tegra_pmc *pmc, u32 value,
506 unsigned long offset)
509 tegra_pmc_writel(pmc, value, offset);
511 writel(value, pmc->scratch + offset);
515 * TODO Figure out a way to call this with the struct tegra_pmc * passed in.
516 * This currently doesn't work because readx_poll_timeout() can only operate
517 * on functions that take a single argument.
519 static inline bool tegra_powergate_state(int id)
521 if (id == TEGRA_POWERGATE_3D && pmc->soc->has_gpu_clamps)
522 return (tegra_pmc_readl(pmc, GPU_RG_CNTRL) & 0x1) == 0;
524 return (tegra_pmc_readl(pmc, PWRGATE_STATUS) & BIT(id)) != 0;
527 static inline bool tegra_powergate_is_valid(struct tegra_pmc *pmc, int id)
529 return (pmc->soc && pmc->soc->powergates[id]);
532 static inline bool tegra_powergate_is_available(struct tegra_pmc *pmc, int id)
534 return test_bit(id, pmc->powergates_available);
537 static int tegra_powergate_lookup(struct tegra_pmc *pmc, const char *name)
541 if (!pmc || !pmc->soc || !name)
544 for (i = 0; i < pmc->soc->num_powergates; i++) {
545 if (!tegra_powergate_is_valid(pmc, i))
548 if (!strcmp(name, pmc->soc->powergates[i]))
555 static int tegra20_powergate_set(struct tegra_pmc *pmc, unsigned int id,
558 unsigned int retries = 100;
563 * As per TRM documentation, the toggle command will be dropped by PMC
564 * if there is contention with a HW-initiated toggling (i.e. CPU core
565 * power-gated), the command should be retried in that case.
568 tegra_pmc_writel(pmc, PWRGATE_TOGGLE_START | id, PWRGATE_TOGGLE);
570 /* wait for PMC to execute the command */
571 ret = readx_poll_timeout(tegra_powergate_state, id, status,
572 status == new_state, 1, 10);
573 } while (ret == -ETIMEDOUT && retries--);
578 static inline bool tegra_powergate_toggle_ready(struct tegra_pmc *pmc)
580 return !(tegra_pmc_readl(pmc, PWRGATE_TOGGLE) & PWRGATE_TOGGLE_START);
583 static int tegra114_powergate_set(struct tegra_pmc *pmc, unsigned int id,
589 /* wait while PMC power gating is contended */
590 err = readx_poll_timeout(tegra_powergate_toggle_ready, pmc, status,
591 status == true, 1, 100);
595 tegra_pmc_writel(pmc, PWRGATE_TOGGLE_START | id, PWRGATE_TOGGLE);
597 /* wait for PMC to accept the command */
598 err = readx_poll_timeout(tegra_powergate_toggle_ready, pmc, status,
599 status == true, 1, 100);
603 /* wait for PMC to execute the command */
604 err = readx_poll_timeout(tegra_powergate_state, id, status,
605 status == new_state, 10, 100000);
613 * tegra_powergate_set() - set the state of a partition
614 * @pmc: power management controller
616 * @new_state: new state of the partition
618 static int tegra_powergate_set(struct tegra_pmc *pmc, unsigned int id,
623 if (id == TEGRA_POWERGATE_3D && pmc->soc->has_gpu_clamps)
626 mutex_lock(&pmc->powergates_lock);
628 if (tegra_powergate_state(id) == new_state) {
629 mutex_unlock(&pmc->powergates_lock);
633 err = pmc->soc->powergate_set(pmc, id, new_state);
635 mutex_unlock(&pmc->powergates_lock);
640 static int __tegra_powergate_remove_clamping(struct tegra_pmc *pmc,
645 mutex_lock(&pmc->powergates_lock);
648 * On Tegra124 and later, the clamps for the GPU are controlled by a
649 * separate register (with different semantics).
651 if (id == TEGRA_POWERGATE_3D) {
652 if (pmc->soc->has_gpu_clamps) {
653 tegra_pmc_writel(pmc, 0, GPU_RG_CNTRL);
659 * Tegra 2 has a bug where PCIE and VDE clamping masks are
660 * swapped relatively to the partition ids
662 if (id == TEGRA_POWERGATE_VDEC)
663 mask = (1 << TEGRA_POWERGATE_PCIE);
664 else if (id == TEGRA_POWERGATE_PCIE)
665 mask = (1 << TEGRA_POWERGATE_VDEC);
669 tegra_pmc_writel(pmc, mask, REMOVE_CLAMPING);
672 mutex_unlock(&pmc->powergates_lock);
677 static int tegra_powergate_prepare_clocks(struct tegra_powergate *pg)
679 unsigned long safe_rate = 100 * 1000 * 1000;
683 for (i = 0; i < pg->num_clks; i++) {
684 pg->clk_rates[i] = clk_get_rate(pg->clks[i]);
686 if (!pg->clk_rates[i]) {
691 if (pg->clk_rates[i] <= safe_rate)
695 * We don't know whether voltage state is okay for the
696 * current clock rate, hence it's better to temporally
697 * switch clock to a safe rate which is suitable for
698 * all voltages, before enabling the clock.
700 err = clk_set_rate(pg->clks[i], safe_rate);
709 clk_set_rate(pg->clks[i], pg->clk_rates[i]);
714 static int tegra_powergate_unprepare_clocks(struct tegra_powergate *pg)
719 for (i = 0; i < pg->num_clks; i++) {
720 err = clk_set_rate(pg->clks[i], pg->clk_rates[i]);
728 static void tegra_powergate_disable_clocks(struct tegra_powergate *pg)
732 for (i = 0; i < pg->num_clks; i++)
733 clk_disable_unprepare(pg->clks[i]);
736 static int tegra_powergate_enable_clocks(struct tegra_powergate *pg)
741 for (i = 0; i < pg->num_clks; i++) {
742 err = clk_prepare_enable(pg->clks[i]);
751 clk_disable_unprepare(pg->clks[i]);
756 static int tegra_powergate_power_up(struct tegra_powergate *pg,
761 err = reset_control_assert(pg->reset);
765 usleep_range(10, 20);
767 err = tegra_powergate_set(pg->pmc, pg->id, true);
771 usleep_range(10, 20);
773 err = tegra_powergate_prepare_clocks(pg);
777 err = tegra_powergate_enable_clocks(pg);
781 usleep_range(10, 20);
783 err = __tegra_powergate_remove_clamping(pg->pmc, pg->id);
787 usleep_range(10, 20);
789 err = reset_control_deassert(pg->reset);
793 usleep_range(10, 20);
795 if (pg->pmc->soc->needs_mbist_war)
796 err = tegra210_clk_handle_mbist_war(pg->id);
801 tegra_powergate_disable_clocks(pg);
803 err = tegra_powergate_unprepare_clocks(pg);
810 tegra_powergate_disable_clocks(pg);
811 usleep_range(10, 20);
814 tegra_powergate_unprepare_clocks(pg);
817 tegra_powergate_set(pg->pmc, pg->id, false);
822 static int tegra_powergate_power_down(struct tegra_powergate *pg)
826 err = tegra_powergate_prepare_clocks(pg);
830 err = tegra_powergate_enable_clocks(pg);
834 usleep_range(10, 20);
836 err = reset_control_assert(pg->reset);
840 usleep_range(10, 20);
842 tegra_powergate_disable_clocks(pg);
844 usleep_range(10, 20);
846 err = tegra_powergate_set(pg->pmc, pg->id, false);
850 err = tegra_powergate_unprepare_clocks(pg);
857 tegra_powergate_enable_clocks(pg);
858 usleep_range(10, 20);
859 reset_control_deassert(pg->reset);
860 usleep_range(10, 20);
863 tegra_powergate_disable_clocks(pg);
866 tegra_powergate_unprepare_clocks(pg);
871 static int tegra_genpd_power_on(struct generic_pm_domain *domain)
873 struct tegra_powergate *pg = to_powergate(domain);
874 struct device *dev = pg->pmc->dev;
877 err = tegra_powergate_power_up(pg, true);
879 dev_err(dev, "failed to turn on PM domain %s: %d\n",
880 pg->genpd.name, err);
884 reset_control_release(pg->reset);
890 static int tegra_genpd_power_off(struct generic_pm_domain *domain)
892 struct tegra_powergate *pg = to_powergate(domain);
893 struct device *dev = pg->pmc->dev;
896 err = reset_control_acquire(pg->reset);
898 dev_err(dev, "failed to acquire resets for PM domain %s: %d\n",
899 pg->genpd.name, err);
903 err = tegra_powergate_power_down(pg);
905 dev_err(dev, "failed to turn off PM domain %s: %d\n",
906 pg->genpd.name, err);
907 reset_control_release(pg->reset);
914 * tegra_powergate_power_on() - power on partition
917 int tegra_powergate_power_on(unsigned int id)
919 if (!tegra_powergate_is_available(pmc, id))
922 return tegra_powergate_set(pmc, id, true);
924 EXPORT_SYMBOL(tegra_powergate_power_on);
927 * tegra_powergate_power_off() - power off partition
930 int tegra_powergate_power_off(unsigned int id)
932 if (!tegra_powergate_is_available(pmc, id))
935 return tegra_powergate_set(pmc, id, false);
937 EXPORT_SYMBOL(tegra_powergate_power_off);
940 * tegra_powergate_is_powered() - check if partition is powered
941 * @pmc: power management controller
944 static int tegra_powergate_is_powered(struct tegra_pmc *pmc, unsigned int id)
946 if (!tegra_powergate_is_valid(pmc, id))
949 return tegra_powergate_state(id);
953 * tegra_powergate_remove_clamping() - remove power clamps for partition
956 int tegra_powergate_remove_clamping(unsigned int id)
958 if (!tegra_powergate_is_available(pmc, id))
961 return __tegra_powergate_remove_clamping(pmc, id);
963 EXPORT_SYMBOL(tegra_powergate_remove_clamping);
966 * tegra_powergate_sequence_power_up() - power up partition
968 * @clk: clock for partition
969 * @rst: reset for partition
971 * Must be called with clk disabled, and returns with clk enabled.
973 int tegra_powergate_sequence_power_up(unsigned int id, struct clk *clk,
974 struct reset_control *rst)
976 struct tegra_powergate *pg;
979 if (!tegra_powergate_is_available(pmc, id))
982 pg = kzalloc(sizeof(*pg), GFP_KERNEL);
986 pg->clk_rates = kzalloc(sizeof(*pg->clk_rates), GFP_KERNEL);
987 if (!pg->clk_rates) {
998 err = tegra_powergate_power_up(pg, false);
1000 dev_err(pmc->dev, "failed to turn on partition %d: %d\n", id,
1003 kfree(pg->clk_rates);
1008 EXPORT_SYMBOL(tegra_powergate_sequence_power_up);
1011 * tegra_get_cpu_powergate_id() - convert from CPU ID to partition ID
1012 * @pmc: power management controller
1013 * @cpuid: CPU partition ID
1015 * Returns the partition ID corresponding to the CPU partition ID or a
1016 * negative error code on failure.
1018 static int tegra_get_cpu_powergate_id(struct tegra_pmc *pmc,
1021 if (pmc->soc && cpuid < pmc->soc->num_cpu_powergates)
1022 return pmc->soc->cpu_powergates[cpuid];
1028 * tegra_pmc_cpu_is_powered() - check if CPU partition is powered
1029 * @cpuid: CPU partition ID
1031 bool tegra_pmc_cpu_is_powered(unsigned int cpuid)
1035 id = tegra_get_cpu_powergate_id(pmc, cpuid);
1039 return tegra_powergate_is_powered(pmc, id);
1043 * tegra_pmc_cpu_power_on() - power on CPU partition
1044 * @cpuid: CPU partition ID
1046 int tegra_pmc_cpu_power_on(unsigned int cpuid)
1050 id = tegra_get_cpu_powergate_id(pmc, cpuid);
1054 return tegra_powergate_set(pmc, id, true);
1058 * tegra_pmc_cpu_remove_clamping() - remove power clamps for CPU partition
1059 * @cpuid: CPU partition ID
1061 int tegra_pmc_cpu_remove_clamping(unsigned int cpuid)
1065 id = tegra_get_cpu_powergate_id(pmc, cpuid);
1069 return tegra_powergate_remove_clamping(id);
1072 static void tegra_pmc_program_reboot_reason(const char *cmd)
1076 value = tegra_pmc_scratch_readl(pmc, pmc->soc->regs->scratch0);
1077 value &= ~PMC_SCRATCH0_MODE_MASK;
1080 if (strcmp(cmd, "recovery") == 0)
1081 value |= PMC_SCRATCH0_MODE_RECOVERY;
1083 if (strcmp(cmd, "bootloader") == 0)
1084 value |= PMC_SCRATCH0_MODE_BOOTLOADER;
1086 if (strcmp(cmd, "forced-recovery") == 0)
1087 value |= PMC_SCRATCH0_MODE_RCM;
1090 tegra_pmc_scratch_writel(pmc, value, pmc->soc->regs->scratch0);
1093 static int tegra_pmc_reboot_notify(struct notifier_block *this,
1094 unsigned long action, void *data)
1096 if (action == SYS_RESTART)
1097 tegra_pmc_program_reboot_reason(data);
1102 static struct notifier_block tegra_pmc_reboot_notifier = {
1103 .notifier_call = tegra_pmc_reboot_notify,
1106 static void tegra_pmc_restart(void)
1110 /* reset everything but PMC_SCRATCH0 and PMC_RST_STATUS */
1111 value = tegra_pmc_readl(pmc, PMC_CNTRL);
1112 value |= PMC_CNTRL_MAIN_RST;
1113 tegra_pmc_writel(pmc, value, PMC_CNTRL);
1116 static int tegra_pmc_restart_handler(struct sys_off_data *data)
1118 tegra_pmc_restart();
1123 static int tegra_pmc_power_off_handler(struct sys_off_data *data)
1126 * Reboot Nexus 7 into special bootloader mode if USB cable is
1127 * connected in order to display battery status and power off.
1129 if (of_machine_is_compatible("asus,grouper") &&
1130 power_supply_is_system_supplied()) {
1131 const u32 go_to_charger_mode = 0xa5a55a5a;
1133 tegra_pmc_writel(pmc, go_to_charger_mode, PMC_SCRATCH37);
1134 tegra_pmc_restart();
1140 static int powergate_show(struct seq_file *s, void *data)
1145 seq_printf(s, " powergate powered\n");
1146 seq_printf(s, "------------------\n");
1148 for (i = 0; i < pmc->soc->num_powergates; i++) {
1149 status = tegra_powergate_is_powered(pmc, i);
1153 seq_printf(s, " %9s %7s\n", pmc->soc->powergates[i],
1154 status ? "yes" : "no");
1160 DEFINE_SHOW_ATTRIBUTE(powergate);
1162 static int tegra_powergate_debugfs_init(void)
1164 pmc->debugfs = debugfs_create_file("powergate", S_IRUGO, NULL, NULL,
1172 static int tegra_powergate_of_get_clks(struct tegra_powergate *pg,
1173 struct device_node *np)
1176 unsigned int i, count;
1179 count = of_clk_get_parent_count(np);
1183 pg->clks = kcalloc(count, sizeof(clk), GFP_KERNEL);
1187 pg->clk_rates = kcalloc(count, sizeof(*pg->clk_rates), GFP_KERNEL);
1188 if (!pg->clk_rates) {
1193 for (i = 0; i < count; i++) {
1194 pg->clks[i] = of_clk_get(np, i);
1195 if (IS_ERR(pg->clks[i])) {
1196 err = PTR_ERR(pg->clks[i]);
1201 pg->num_clks = count;
1207 clk_put(pg->clks[i]);
1209 kfree(pg->clk_rates);
1215 static int tegra_powergate_of_get_resets(struct tegra_powergate *pg,
1216 struct device_node *np, bool off)
1218 struct device *dev = pg->pmc->dev;
1221 pg->reset = of_reset_control_array_get_exclusive_released(np);
1222 if (IS_ERR(pg->reset)) {
1223 err = PTR_ERR(pg->reset);
1224 dev_err(dev, "failed to get device resets: %d\n", err);
1228 err = reset_control_acquire(pg->reset);
1230 pr_err("failed to acquire resets: %d\n", err);
1235 err = reset_control_assert(pg->reset);
1237 err = reset_control_deassert(pg->reset);
1241 reset_control_release(pg->reset);
1246 reset_control_release(pg->reset);
1247 reset_control_put(pg->reset);
1253 static int tegra_powergate_add(struct tegra_pmc *pmc, struct device_node *np)
1255 struct device *dev = pmc->dev;
1256 struct tegra_powergate *pg;
1260 pg = kzalloc(sizeof(*pg), GFP_KERNEL);
1264 id = tegra_powergate_lookup(pmc, np->name);
1266 dev_err(dev, "powergate lookup failed for %pOFn: %d\n", np, id);
1272 * Clear the bit for this powergate so it cannot be managed
1273 * directly via the legacy APIs for controlling powergates.
1275 clear_bit(id, pmc->powergates_available);
1278 pg->genpd.name = np->name;
1279 pg->genpd.power_off = tegra_genpd_power_off;
1280 pg->genpd.power_on = tegra_genpd_power_on;
1283 off = !tegra_powergate_is_powered(pmc, pg->id);
1285 err = tegra_powergate_of_get_clks(pg, np);
1287 dev_err(dev, "failed to get clocks for %pOFn: %d\n", np, err);
1291 err = tegra_powergate_of_get_resets(pg, np, off);
1293 dev_err(dev, "failed to get resets for %pOFn: %d\n", np, err);
1297 if (!IS_ENABLED(CONFIG_PM_GENERIC_DOMAINS)) {
1299 WARN_ON(tegra_powergate_power_up(pg, true));
1304 err = pm_genpd_init(&pg->genpd, NULL, off);
1306 dev_err(dev, "failed to initialise PM domain %pOFn: %d\n", np,
1311 err = of_genpd_add_provider_simple(np, &pg->genpd);
1313 dev_err(dev, "failed to add PM domain provider for %pOFn: %d\n",
1318 dev_dbg(dev, "added PM domain %s\n", pg->genpd.name);
1323 pm_genpd_remove(&pg->genpd);
1326 reset_control_put(pg->reset);
1329 while (pg->num_clks--)
1330 clk_put(pg->clks[pg->num_clks]);
1335 set_bit(id, pmc->powergates_available);
1343 bool tegra_pmc_core_domain_state_synced(void)
1345 return pmc->core_domain_state_synced;
1349 tegra_pmc_core_pd_set_performance_state(struct generic_pm_domain *genpd,
1352 struct dev_pm_opp *opp;
1355 opp = dev_pm_opp_find_level_ceil(&genpd->dev, &level);
1357 dev_err(&genpd->dev, "failed to find OPP for level %u: %pe\n",
1359 return PTR_ERR(opp);
1362 mutex_lock(&pmc->powergates_lock);
1363 err = dev_pm_opp_set_opp(pmc->dev, opp);
1364 mutex_unlock(&pmc->powergates_lock);
1366 dev_pm_opp_put(opp);
1369 dev_err(&genpd->dev, "failed to set voltage to %duV: %d\n",
1378 tegra_pmc_core_pd_opp_to_performance_state(struct generic_pm_domain *genpd,
1379 struct dev_pm_opp *opp)
1381 return dev_pm_opp_get_level(opp);
1384 static int tegra_pmc_core_pd_add(struct tegra_pmc *pmc, struct device_node *np)
1386 struct generic_pm_domain *genpd;
1387 const char *rname = "core";
1390 genpd = devm_kzalloc(pmc->dev, sizeof(*genpd), GFP_KERNEL);
1394 genpd->name = "core";
1395 genpd->set_performance_state = tegra_pmc_core_pd_set_performance_state;
1396 genpd->opp_to_performance_state = tegra_pmc_core_pd_opp_to_performance_state;
1398 err = devm_pm_opp_set_regulators(pmc->dev, &rname, 1);
1400 return dev_err_probe(pmc->dev, err,
1401 "failed to set core OPP regulator\n");
1403 err = pm_genpd_init(genpd, NULL, false);
1405 dev_err(pmc->dev, "failed to init core genpd: %d\n", err);
1409 err = of_genpd_add_provider_simple(np, genpd);
1411 dev_err(pmc->dev, "failed to add core genpd: %d\n", err);
1415 pmc->core_domain_registered = true;
1420 pm_genpd_remove(genpd);
1425 static int tegra_powergate_init(struct tegra_pmc *pmc,
1426 struct device_node *parent)
1428 struct of_phandle_args child_args, parent_args;
1429 struct device_node *np, *child;
1433 * Core power domain is the parent of powergate domains, hence it
1434 * should be registered first.
1436 np = of_get_child_by_name(parent, "core-domain");
1438 err = tegra_pmc_core_pd_add(pmc, np);
1444 np = of_get_child_by_name(parent, "powergates");
1448 for_each_child_of_node(np, child) {
1449 err = tegra_powergate_add(pmc, child);
1455 if (of_parse_phandle_with_args(child, "power-domains",
1456 "#power-domain-cells",
1460 child_args.np = child;
1461 child_args.args_count = 0;
1463 err = of_genpd_add_subdomain(&parent_args, &child_args);
1464 of_node_put(parent_args.np);
1476 static void tegra_powergate_remove(struct generic_pm_domain *genpd)
1478 struct tegra_powergate *pg = to_powergate(genpd);
1480 reset_control_put(pg->reset);
1482 while (pg->num_clks--)
1483 clk_put(pg->clks[pg->num_clks]);
1487 set_bit(pg->id, pmc->powergates_available);
1492 static void tegra_powergate_remove_all(struct device_node *parent)
1494 struct generic_pm_domain *genpd;
1495 struct device_node *np, *child;
1497 np = of_get_child_by_name(parent, "powergates");
1501 for_each_child_of_node(np, child) {
1502 of_genpd_del_provider(child);
1504 genpd = of_genpd_remove_last(child);
1508 tegra_powergate_remove(genpd);
1513 np = of_get_child_by_name(parent, "core-domain");
1515 of_genpd_del_provider(np);
1516 of_genpd_remove_last(np);
1520 static const struct tegra_io_pad_soc *
1521 tegra_io_pad_find(struct tegra_pmc *pmc, enum tegra_io_pad id)
1525 for (i = 0; i < pmc->soc->num_io_pads; i++)
1526 if (pmc->soc->io_pads[i].id == id)
1527 return &pmc->soc->io_pads[i];
1532 static int tegra_io_pad_get_dpd_register_bit(struct tegra_pmc *pmc,
1533 enum tegra_io_pad id,
1534 unsigned long *request,
1535 unsigned long *status,
1538 const struct tegra_io_pad_soc *pad;
1540 pad = tegra_io_pad_find(pmc, id);
1542 dev_err(pmc->dev, "invalid I/O pad ID %u\n", id);
1546 if (pad->dpd == UINT_MAX)
1549 *mask = BIT(pad->dpd % 32);
1551 if (pad->dpd < 32) {
1552 *status = pmc->soc->regs->dpd_status;
1553 *request = pmc->soc->regs->dpd_req;
1555 *status = pmc->soc->regs->dpd2_status;
1556 *request = pmc->soc->regs->dpd2_req;
1562 static int tegra_io_pad_prepare(struct tegra_pmc *pmc, enum tegra_io_pad id,
1563 unsigned long *request, unsigned long *status,
1566 unsigned long rate, value;
1569 err = tegra_io_pad_get_dpd_register_bit(pmc, id, request, status, mask);
1576 dev_err(pmc->dev, "failed to get clock rate\n");
1580 tegra_pmc_writel(pmc, DPD_SAMPLE_ENABLE, DPD_SAMPLE);
1582 /* must be at least 200 ns, in APB (PCLK) clock cycles */
1583 value = DIV_ROUND_UP(1000000000, rate);
1584 value = DIV_ROUND_UP(200, value);
1585 tegra_pmc_writel(pmc, value, SEL_DPD_TIM);
1591 static int tegra_io_pad_poll(struct tegra_pmc *pmc, unsigned long offset,
1592 u32 mask, u32 val, unsigned long timeout)
1596 timeout = jiffies + msecs_to_jiffies(timeout);
1598 while (time_after(timeout, jiffies)) {
1599 value = tegra_pmc_readl(pmc, offset);
1600 if ((value & mask) == val)
1603 usleep_range(250, 1000);
1609 static void tegra_io_pad_unprepare(struct tegra_pmc *pmc)
1612 tegra_pmc_writel(pmc, DPD_SAMPLE_DISABLE, DPD_SAMPLE);
1616 * tegra_io_pad_power_enable() - enable power to I/O pad
1617 * @id: Tegra I/O pad ID for which to enable power
1619 * Returns: 0 on success or a negative error code on failure.
1621 int tegra_io_pad_power_enable(enum tegra_io_pad id)
1623 unsigned long request, status;
1627 mutex_lock(&pmc->powergates_lock);
1629 err = tegra_io_pad_prepare(pmc, id, &request, &status, &mask);
1631 dev_err(pmc->dev, "failed to prepare I/O pad: %d\n", err);
1635 tegra_pmc_writel(pmc, IO_DPD_REQ_CODE_OFF | mask, request);
1637 err = tegra_io_pad_poll(pmc, status, mask, 0, 250);
1639 dev_err(pmc->dev, "failed to enable I/O pad: %d\n", err);
1643 tegra_io_pad_unprepare(pmc);
1646 mutex_unlock(&pmc->powergates_lock);
1649 EXPORT_SYMBOL(tegra_io_pad_power_enable);
1652 * tegra_io_pad_power_disable() - disable power to I/O pad
1653 * @id: Tegra I/O pad ID for which to disable power
1655 * Returns: 0 on success or a negative error code on failure.
1657 int tegra_io_pad_power_disable(enum tegra_io_pad id)
1659 unsigned long request, status;
1663 mutex_lock(&pmc->powergates_lock);
1665 err = tegra_io_pad_prepare(pmc, id, &request, &status, &mask);
1667 dev_err(pmc->dev, "failed to prepare I/O pad: %d\n", err);
1671 tegra_pmc_writel(pmc, IO_DPD_REQ_CODE_ON | mask, request);
1673 err = tegra_io_pad_poll(pmc, status, mask, mask, 250);
1675 dev_err(pmc->dev, "failed to disable I/O pad: %d\n", err);
1679 tegra_io_pad_unprepare(pmc);
1682 mutex_unlock(&pmc->powergates_lock);
1685 EXPORT_SYMBOL(tegra_io_pad_power_disable);
1687 static int tegra_io_pad_is_powered(struct tegra_pmc *pmc, enum tegra_io_pad id)
1689 unsigned long request, status;
1693 err = tegra_io_pad_get_dpd_register_bit(pmc, id, &request, &status,
1698 value = tegra_pmc_readl(pmc, status);
1700 return !(value & mask);
1703 static int tegra_io_pad_set_voltage(struct tegra_pmc *pmc, enum tegra_io_pad id,
1706 const struct tegra_io_pad_soc *pad;
1709 pad = tegra_io_pad_find(pmc, id);
1713 if (pad->voltage == UINT_MAX)
1716 mutex_lock(&pmc->powergates_lock);
1718 if (pmc->soc->has_impl_33v_pwr) {
1719 value = tegra_pmc_readl(pmc, PMC_IMPL_E_33V_PWR);
1721 if (voltage == TEGRA_IO_PAD_VOLTAGE_1V8)
1722 value &= ~BIT(pad->voltage);
1724 value |= BIT(pad->voltage);
1726 tegra_pmc_writel(pmc, value, PMC_IMPL_E_33V_PWR);
1728 /* write-enable PMC_PWR_DET_VALUE[pad->voltage] */
1729 value = tegra_pmc_readl(pmc, PMC_PWR_DET);
1730 value |= BIT(pad->voltage);
1731 tegra_pmc_writel(pmc, value, PMC_PWR_DET);
1733 /* update I/O voltage */
1734 value = tegra_pmc_readl(pmc, PMC_PWR_DET_VALUE);
1736 if (voltage == TEGRA_IO_PAD_VOLTAGE_1V8)
1737 value &= ~BIT(pad->voltage);
1739 value |= BIT(pad->voltage);
1741 tegra_pmc_writel(pmc, value, PMC_PWR_DET_VALUE);
1744 mutex_unlock(&pmc->powergates_lock);
1746 usleep_range(100, 250);
1751 static int tegra_io_pad_get_voltage(struct tegra_pmc *pmc, enum tegra_io_pad id)
1753 const struct tegra_io_pad_soc *pad;
1756 pad = tegra_io_pad_find(pmc, id);
1760 if (pad->voltage == UINT_MAX)
1763 if (pmc->soc->has_impl_33v_pwr)
1764 value = tegra_pmc_readl(pmc, PMC_IMPL_E_33V_PWR);
1766 value = tegra_pmc_readl(pmc, PMC_PWR_DET_VALUE);
1768 if ((value & BIT(pad->voltage)) == 0)
1769 return TEGRA_IO_PAD_VOLTAGE_1V8;
1771 return TEGRA_IO_PAD_VOLTAGE_3V3;
1775 * tegra_io_rail_power_on() - enable power to I/O rail
1776 * @id: Tegra I/O pad ID for which to enable power
1778 * See also: tegra_io_pad_power_enable()
1780 int tegra_io_rail_power_on(unsigned int id)
1782 return tegra_io_pad_power_enable(id);
1784 EXPORT_SYMBOL(tegra_io_rail_power_on);
1787 * tegra_io_rail_power_off() - disable power to I/O rail
1788 * @id: Tegra I/O pad ID for which to disable power
1790 * See also: tegra_io_pad_power_disable()
1792 int tegra_io_rail_power_off(unsigned int id)
1794 return tegra_io_pad_power_disable(id);
1796 EXPORT_SYMBOL(tegra_io_rail_power_off);
1798 #ifdef CONFIG_PM_SLEEP
1799 enum tegra_suspend_mode tegra_pmc_get_suspend_mode(void)
1801 return pmc->suspend_mode;
1804 void tegra_pmc_set_suspend_mode(enum tegra_suspend_mode mode)
1806 if (mode < TEGRA_SUSPEND_NONE || mode >= TEGRA_MAX_SUSPEND_MODE)
1809 pmc->suspend_mode = mode;
1812 void tegra_pmc_enter_suspend_mode(enum tegra_suspend_mode mode)
1814 unsigned long long rate = 0;
1819 case TEGRA_SUSPEND_LP1:
1823 case TEGRA_SUSPEND_LP2:
1831 if (WARN_ON_ONCE(rate == 0))
1834 ticks = pmc->cpu_good_time * rate + USEC_PER_SEC - 1;
1835 do_div(ticks, USEC_PER_SEC);
1836 tegra_pmc_writel(pmc, ticks, PMC_CPUPWRGOOD_TIMER);
1838 ticks = pmc->cpu_off_time * rate + USEC_PER_SEC - 1;
1839 do_div(ticks, USEC_PER_SEC);
1840 tegra_pmc_writel(pmc, ticks, PMC_CPUPWROFF_TIMER);
1842 value = tegra_pmc_readl(pmc, PMC_CNTRL);
1843 value &= ~PMC_CNTRL_SIDE_EFFECT_LP0;
1844 value |= PMC_CNTRL_CPU_PWRREQ_OE;
1845 tegra_pmc_writel(pmc, value, PMC_CNTRL);
1849 static int tegra_pmc_parse_dt(struct tegra_pmc *pmc, struct device_node *np)
1851 u32 value, values[2];
1853 if (of_property_read_u32(np, "nvidia,suspend-mode", &value)) {
1854 pmc->suspend_mode = TEGRA_SUSPEND_NONE;
1858 pmc->suspend_mode = TEGRA_SUSPEND_LP0;
1862 pmc->suspend_mode = TEGRA_SUSPEND_LP1;
1866 pmc->suspend_mode = TEGRA_SUSPEND_LP2;
1870 pmc->suspend_mode = TEGRA_SUSPEND_NONE;
1875 pmc->suspend_mode = tegra_pm_validate_suspend_mode(pmc->suspend_mode);
1877 if (of_property_read_u32(np, "nvidia,cpu-pwr-good-time", &value))
1878 pmc->suspend_mode = TEGRA_SUSPEND_NONE;
1880 pmc->cpu_good_time = value;
1882 if (of_property_read_u32(np, "nvidia,cpu-pwr-off-time", &value))
1883 pmc->suspend_mode = TEGRA_SUSPEND_NONE;
1885 pmc->cpu_off_time = value;
1887 if (of_property_read_u32_array(np, "nvidia,core-pwr-good-time",
1888 values, ARRAY_SIZE(values)))
1889 pmc->suspend_mode = TEGRA_SUSPEND_NONE;
1891 pmc->core_osc_time = values[0];
1892 pmc->core_pmu_time = values[1];
1894 if (of_property_read_u32(np, "nvidia,core-pwr-off-time", &value))
1895 pmc->suspend_mode = TEGRA_SUSPEND_NONE;
1897 pmc->core_off_time = value;
1899 pmc->corereq_high = of_property_read_bool(np,
1900 "nvidia,core-power-req-active-high");
1902 pmc->sysclkreq_high = of_property_read_bool(np,
1903 "nvidia,sys-clock-req-active-high");
1905 pmc->combined_req = of_property_read_bool(np,
1906 "nvidia,combined-power-req");
1908 pmc->cpu_pwr_good_en = of_property_read_bool(np,
1909 "nvidia,cpu-pwr-good-en");
1911 if (of_property_read_u32_array(np, "nvidia,lp0-vec", values,
1912 ARRAY_SIZE(values)))
1913 if (pmc->suspend_mode == TEGRA_SUSPEND_LP0)
1914 pmc->suspend_mode = TEGRA_SUSPEND_LP1;
1916 pmc->lp0_vec_phys = values[0];
1917 pmc->lp0_vec_size = values[1];
1922 static void tegra_pmc_init(struct tegra_pmc *pmc)
1925 pmc->soc->init(pmc);
1928 static void tegra_pmc_init_tsense_reset(struct tegra_pmc *pmc)
1930 static const char disabled[] = "emergency thermal reset disabled";
1931 u32 pmu_addr, ctrl_id, reg_addr, reg_data, pinmux;
1932 struct device *dev = pmc->dev;
1933 struct device_node *np;
1934 u32 value, checksum;
1936 if (!pmc->soc->has_tsense_reset)
1939 np = of_get_child_by_name(pmc->dev->of_node, "i2c-thermtrip");
1941 dev_warn(dev, "i2c-thermtrip node not found, %s.\n", disabled);
1945 if (of_property_read_u32(np, "nvidia,i2c-controller-id", &ctrl_id)) {
1946 dev_err(dev, "I2C controller ID missing, %s.\n", disabled);
1950 if (of_property_read_u32(np, "nvidia,bus-addr", &pmu_addr)) {
1951 dev_err(dev, "nvidia,bus-addr missing, %s.\n", disabled);
1955 if (of_property_read_u32(np, "nvidia,reg-addr", ®_addr)) {
1956 dev_err(dev, "nvidia,reg-addr missing, %s.\n", disabled);
1960 if (of_property_read_u32(np, "nvidia,reg-data", ®_data)) {
1961 dev_err(dev, "nvidia,reg-data missing, %s.\n", disabled);
1965 if (of_property_read_u32(np, "nvidia,pinmux-id", &pinmux))
1968 value = tegra_pmc_readl(pmc, PMC_SENSOR_CTRL);
1969 value |= PMC_SENSOR_CTRL_SCRATCH_WRITE;
1970 tegra_pmc_writel(pmc, value, PMC_SENSOR_CTRL);
1972 value = (reg_data << PMC_SCRATCH54_DATA_SHIFT) |
1973 (reg_addr << PMC_SCRATCH54_ADDR_SHIFT);
1974 tegra_pmc_writel(pmc, value, PMC_SCRATCH54);
1976 value = PMC_SCRATCH55_RESET_TEGRA;
1977 value |= ctrl_id << PMC_SCRATCH55_CNTRL_ID_SHIFT;
1978 value |= pinmux << PMC_SCRATCH55_PINMUX_SHIFT;
1979 value |= pmu_addr << PMC_SCRATCH55_I2CSLV1_SHIFT;
1982 * Calculate checksum of SCRATCH54, SCRATCH55 fields. Bits 23:16 will
1983 * contain the checksum and are currently zero, so they are not added.
1985 checksum = reg_addr + reg_data + (value & 0xff) + ((value >> 8) & 0xff)
1986 + ((value >> 24) & 0xff);
1988 checksum = 0x100 - checksum;
1990 value |= checksum << PMC_SCRATCH55_CHECKSUM_SHIFT;
1992 tegra_pmc_writel(pmc, value, PMC_SCRATCH55);
1994 value = tegra_pmc_readl(pmc, PMC_SENSOR_CTRL);
1995 value |= PMC_SENSOR_CTRL_ENABLE_RST;
1996 tegra_pmc_writel(pmc, value, PMC_SENSOR_CTRL);
1998 dev_info(pmc->dev, "emergency thermal reset enabled\n");
2004 static int tegra_io_pad_pinctrl_get_groups_count(struct pinctrl_dev *pctl_dev)
2006 struct tegra_pmc *pmc = pinctrl_dev_get_drvdata(pctl_dev);
2008 return pmc->soc->num_io_pads;
2011 static const char *tegra_io_pad_pinctrl_get_group_name(struct pinctrl_dev *pctl,
2014 struct tegra_pmc *pmc = pinctrl_dev_get_drvdata(pctl);
2016 return pmc->soc->io_pads[group].name;
2019 static int tegra_io_pad_pinctrl_get_group_pins(struct pinctrl_dev *pctl_dev,
2021 const unsigned int **pins,
2022 unsigned int *num_pins)
2024 struct tegra_pmc *pmc = pinctrl_dev_get_drvdata(pctl_dev);
2026 *pins = &pmc->soc->io_pads[group].id;
2032 static const struct pinctrl_ops tegra_io_pad_pinctrl_ops = {
2033 .get_groups_count = tegra_io_pad_pinctrl_get_groups_count,
2034 .get_group_name = tegra_io_pad_pinctrl_get_group_name,
2035 .get_group_pins = tegra_io_pad_pinctrl_get_group_pins,
2036 .dt_node_to_map = pinconf_generic_dt_node_to_map_pin,
2037 .dt_free_map = pinconf_generic_dt_free_map,
2040 static int tegra_io_pad_pinconf_get(struct pinctrl_dev *pctl_dev,
2041 unsigned int pin, unsigned long *config)
2043 enum pin_config_param param = pinconf_to_config_param(*config);
2044 struct tegra_pmc *pmc = pinctrl_dev_get_drvdata(pctl_dev);
2045 const struct tegra_io_pad_soc *pad;
2049 pad = tegra_io_pad_find(pmc, pin);
2054 case PIN_CONFIG_POWER_SOURCE:
2055 ret = tegra_io_pad_get_voltage(pmc, pad->id);
2062 case PIN_CONFIG_MODE_LOW_POWER:
2063 ret = tegra_io_pad_is_powered(pmc, pad->id);
2074 *config = pinconf_to_config_packed(param, arg);
2079 static int tegra_io_pad_pinconf_set(struct pinctrl_dev *pctl_dev,
2080 unsigned int pin, unsigned long *configs,
2081 unsigned int num_configs)
2083 struct tegra_pmc *pmc = pinctrl_dev_get_drvdata(pctl_dev);
2084 const struct tegra_io_pad_soc *pad;
2085 enum pin_config_param param;
2090 pad = tegra_io_pad_find(pmc, pin);
2094 for (i = 0; i < num_configs; ++i) {
2095 param = pinconf_to_config_param(configs[i]);
2096 arg = pinconf_to_config_argument(configs[i]);
2099 case PIN_CONFIG_MODE_LOW_POWER:
2101 err = tegra_io_pad_power_disable(pad->id);
2103 err = tegra_io_pad_power_enable(pad->id);
2107 case PIN_CONFIG_POWER_SOURCE:
2108 if (arg != TEGRA_IO_PAD_VOLTAGE_1V8 &&
2109 arg != TEGRA_IO_PAD_VOLTAGE_3V3)
2111 err = tegra_io_pad_set_voltage(pmc, pad->id, arg);
2123 static const struct pinconf_ops tegra_io_pad_pinconf_ops = {
2124 .pin_config_get = tegra_io_pad_pinconf_get,
2125 .pin_config_set = tegra_io_pad_pinconf_set,
2129 static struct pinctrl_desc tegra_pmc_pctl_desc = {
2130 .pctlops = &tegra_io_pad_pinctrl_ops,
2131 .confops = &tegra_io_pad_pinconf_ops,
2134 static int tegra_pmc_pinctrl_init(struct tegra_pmc *pmc)
2138 if (!pmc->soc->num_pin_descs)
2141 tegra_pmc_pctl_desc.name = dev_name(pmc->dev);
2142 tegra_pmc_pctl_desc.pins = pmc->soc->pin_descs;
2143 tegra_pmc_pctl_desc.npins = pmc->soc->num_pin_descs;
2145 pmc->pctl_dev = devm_pinctrl_register(pmc->dev, &tegra_pmc_pctl_desc,
2147 if (IS_ERR(pmc->pctl_dev)) {
2148 err = PTR_ERR(pmc->pctl_dev);
2149 dev_err(pmc->dev, "failed to register pin controller: %d\n",
2157 static ssize_t reset_reason_show(struct device *dev,
2158 struct device_attribute *attr, char *buf)
2162 value = tegra_pmc_readl(pmc, pmc->soc->regs->rst_status);
2163 value &= pmc->soc->regs->rst_source_mask;
2164 value >>= pmc->soc->regs->rst_source_shift;
2166 if (WARN_ON(value >= pmc->soc->num_reset_sources))
2167 return sprintf(buf, "%s\n", "UNKNOWN");
2169 return sprintf(buf, "%s\n", pmc->soc->reset_sources[value]);
2172 static DEVICE_ATTR_RO(reset_reason);
2174 static ssize_t reset_level_show(struct device *dev,
2175 struct device_attribute *attr, char *buf)
2179 value = tegra_pmc_readl(pmc, pmc->soc->regs->rst_status);
2180 value &= pmc->soc->regs->rst_level_mask;
2181 value >>= pmc->soc->regs->rst_level_shift;
2183 if (WARN_ON(value >= pmc->soc->num_reset_levels))
2184 return sprintf(buf, "%s\n", "UNKNOWN");
2186 return sprintf(buf, "%s\n", pmc->soc->reset_levels[value]);
2189 static DEVICE_ATTR_RO(reset_level);
2191 static void tegra_pmc_reset_sysfs_init(struct tegra_pmc *pmc)
2193 struct device *dev = pmc->dev;
2196 if (pmc->soc->reset_sources) {
2197 err = device_create_file(dev, &dev_attr_reset_reason);
2200 "failed to create attr \"reset_reason\": %d\n",
2204 if (pmc->soc->reset_levels) {
2205 err = device_create_file(dev, &dev_attr_reset_level);
2208 "failed to create attr \"reset_level\": %d\n",
2213 static int tegra_pmc_irq_translate(struct irq_domain *domain,
2214 struct irq_fwspec *fwspec,
2215 unsigned long *hwirq,
2218 if (WARN_ON(fwspec->param_count < 2))
2221 *hwirq = fwspec->param[0];
2222 *type = fwspec->param[1];
2227 static int tegra_pmc_irq_alloc(struct irq_domain *domain, unsigned int virq,
2228 unsigned int num_irqs, void *data)
2230 struct tegra_pmc *pmc = domain->host_data;
2231 const struct tegra_pmc_soc *soc = pmc->soc;
2232 struct irq_fwspec *fwspec = data;
2236 if (WARN_ON(num_irqs > 1))
2239 for (i = 0; i < soc->num_wake_events; i++) {
2240 const struct tegra_wake_event *event = &soc->wake_events[i];
2242 if (fwspec->param_count == 2) {
2243 struct irq_fwspec spec;
2245 if (event->id != fwspec->param[0])
2248 err = irq_domain_set_hwirq_and_chip(domain, virq,
2254 spec.fwnode = &pmc->dev->of_node->fwnode;
2255 spec.param_count = 3;
2256 spec.param[0] = GIC_SPI;
2257 spec.param[1] = event->irq;
2258 spec.param[2] = fwspec->param[1];
2260 err = irq_domain_alloc_irqs_parent(domain, virq,
2266 if (fwspec->param_count == 3) {
2267 if (event->gpio.instance != fwspec->param[0] ||
2268 event->gpio.pin != fwspec->param[1])
2271 err = irq_domain_set_hwirq_and_chip(domain, virq,
2275 /* GPIO hierarchies stop at the PMC level */
2276 if (!err && domain->parent)
2277 err = irq_domain_disconnect_hierarchy(domain->parent,
2283 /* If there is no wake-up event, there is no PMC mapping */
2284 if (i == soc->num_wake_events)
2285 err = irq_domain_disconnect_hierarchy(domain, virq);
2290 static const struct irq_domain_ops tegra_pmc_irq_domain_ops = {
2291 .translate = tegra_pmc_irq_translate,
2292 .alloc = tegra_pmc_irq_alloc,
2295 static int tegra210_pmc_irq_set_wake(struct irq_data *data, unsigned int on)
2297 struct tegra_pmc *pmc = irq_data_get_irq_chip_data(data);
2298 unsigned int offset, bit;
2301 offset = data->hwirq / 32;
2302 bit = data->hwirq % 32;
2304 /* clear wake status */
2305 tegra_pmc_writel(pmc, 0, PMC_SW_WAKE_STATUS);
2306 tegra_pmc_writel(pmc, 0, PMC_SW_WAKE2_STATUS);
2308 tegra_pmc_writel(pmc, 0, PMC_WAKE_STATUS);
2309 tegra_pmc_writel(pmc, 0, PMC_WAKE2_STATUS);
2311 /* enable PMC wake */
2312 if (data->hwirq >= 32)
2313 offset = PMC_WAKE2_MASK;
2315 offset = PMC_WAKE_MASK;
2317 value = tegra_pmc_readl(pmc, offset);
2324 tegra_pmc_writel(pmc, value, offset);
2329 static int tegra210_pmc_irq_set_type(struct irq_data *data, unsigned int type)
2331 struct tegra_pmc *pmc = irq_data_get_irq_chip_data(data);
2332 unsigned int offset, bit;
2335 offset = data->hwirq / 32;
2336 bit = data->hwirq % 32;
2338 if (data->hwirq >= 32)
2339 offset = PMC_WAKE2_LEVEL;
2341 offset = PMC_WAKE_LEVEL;
2343 value = tegra_pmc_readl(pmc, offset);
2346 case IRQ_TYPE_EDGE_RISING:
2347 case IRQ_TYPE_LEVEL_HIGH:
2351 case IRQ_TYPE_EDGE_FALLING:
2352 case IRQ_TYPE_LEVEL_LOW:
2356 case IRQ_TYPE_EDGE_RISING | IRQ_TYPE_EDGE_FALLING:
2364 tegra_pmc_writel(pmc, value, offset);
2369 static int tegra186_pmc_irq_set_wake(struct irq_data *data, unsigned int on)
2371 struct tegra_pmc *pmc = irq_data_get_irq_chip_data(data);
2372 unsigned int offset, bit;
2375 offset = data->hwirq / 32;
2376 bit = data->hwirq % 32;
2378 /* clear wake status */
2379 writel(0x1, pmc->wake + WAKE_AOWAKE_STATUS_W(data->hwirq));
2381 /* route wake to tier 2 */
2382 value = readl(pmc->wake + WAKE_AOWAKE_TIER2_ROUTING(offset));
2385 value &= ~(1 << bit);
2389 writel(value, pmc->wake + WAKE_AOWAKE_TIER2_ROUTING(offset));
2391 /* enable wakeup event */
2392 writel(!!on, pmc->wake + WAKE_AOWAKE_MASK_W(data->hwirq));
2397 static int tegra186_pmc_irq_set_type(struct irq_data *data, unsigned int type)
2399 struct tegra_pmc *pmc = irq_data_get_irq_chip_data(data);
2402 value = readl(pmc->wake + WAKE_AOWAKE_CNTRL(data->hwirq));
2405 case IRQ_TYPE_EDGE_RISING:
2406 case IRQ_TYPE_LEVEL_HIGH:
2407 value |= WAKE_AOWAKE_CNTRL_LEVEL;
2410 case IRQ_TYPE_EDGE_FALLING:
2411 case IRQ_TYPE_LEVEL_LOW:
2412 value &= ~WAKE_AOWAKE_CNTRL_LEVEL;
2415 case IRQ_TYPE_EDGE_RISING | IRQ_TYPE_EDGE_FALLING:
2416 value ^= WAKE_AOWAKE_CNTRL_LEVEL;
2423 writel(value, pmc->wake + WAKE_AOWAKE_CNTRL(data->hwirq));
2428 static void tegra_irq_mask_parent(struct irq_data *data)
2430 if (data->parent_data)
2431 irq_chip_mask_parent(data);
2434 static void tegra_irq_unmask_parent(struct irq_data *data)
2436 if (data->parent_data)
2437 irq_chip_unmask_parent(data);
2440 static void tegra_irq_eoi_parent(struct irq_data *data)
2442 if (data->parent_data)
2443 irq_chip_eoi_parent(data);
2446 static int tegra_irq_set_affinity_parent(struct irq_data *data,
2447 const struct cpumask *dest,
2450 if (data->parent_data)
2451 return irq_chip_set_affinity_parent(data, dest, force);
2456 static int tegra_pmc_irq_init(struct tegra_pmc *pmc)
2458 struct irq_domain *parent = NULL;
2459 struct device_node *np;
2461 np = of_irq_find_parent(pmc->dev->of_node);
2463 parent = irq_find_host(np);
2470 pmc->irq.name = dev_name(pmc->dev);
2471 pmc->irq.irq_mask = tegra_irq_mask_parent;
2472 pmc->irq.irq_unmask = tegra_irq_unmask_parent;
2473 pmc->irq.irq_eoi = tegra_irq_eoi_parent;
2474 pmc->irq.irq_set_affinity = tegra_irq_set_affinity_parent;
2475 pmc->irq.irq_set_type = pmc->soc->irq_set_type;
2476 pmc->irq.irq_set_wake = pmc->soc->irq_set_wake;
2478 pmc->domain = irq_domain_add_hierarchy(parent, 0, 96, pmc->dev->of_node,
2479 &tegra_pmc_irq_domain_ops, pmc);
2481 dev_err(pmc->dev, "failed to allocate domain\n");
2488 static int tegra_pmc_clk_notify_cb(struct notifier_block *nb,
2489 unsigned long action, void *ptr)
2491 struct tegra_pmc *pmc = container_of(nb, struct tegra_pmc, clk_nb);
2492 struct clk_notifier_data *data = ptr;
2495 case PRE_RATE_CHANGE:
2496 mutex_lock(&pmc->powergates_lock);
2499 case POST_RATE_CHANGE:
2500 pmc->rate = data->new_rate;
2503 case ABORT_RATE_CHANGE:
2504 mutex_unlock(&pmc->powergates_lock);
2509 return notifier_from_errno(-EINVAL);
2515 static void pmc_clk_fence_udelay(u32 offset)
2517 tegra_pmc_readl(pmc, offset);
2518 /* pmc clk propagation delay 2 us */
2522 static u8 pmc_clk_mux_get_parent(struct clk_hw *hw)
2524 struct pmc_clk *clk = to_pmc_clk(hw);
2527 val = tegra_pmc_readl(pmc, clk->offs) >> clk->mux_shift;
2528 val &= PMC_CLK_OUT_MUX_MASK;
2533 static int pmc_clk_mux_set_parent(struct clk_hw *hw, u8 index)
2535 struct pmc_clk *clk = to_pmc_clk(hw);
2538 val = tegra_pmc_readl(pmc, clk->offs);
2539 val &= ~(PMC_CLK_OUT_MUX_MASK << clk->mux_shift);
2540 val |= index << clk->mux_shift;
2541 tegra_pmc_writel(pmc, val, clk->offs);
2542 pmc_clk_fence_udelay(clk->offs);
2547 static int pmc_clk_is_enabled(struct clk_hw *hw)
2549 struct pmc_clk *clk = to_pmc_clk(hw);
2552 val = tegra_pmc_readl(pmc, clk->offs) & BIT(clk->force_en_shift);
2557 static void pmc_clk_set_state(unsigned long offs, u32 shift, int state)
2561 val = tegra_pmc_readl(pmc, offs);
2562 val = state ? (val | BIT(shift)) : (val & ~BIT(shift));
2563 tegra_pmc_writel(pmc, val, offs);
2564 pmc_clk_fence_udelay(offs);
2567 static int pmc_clk_enable(struct clk_hw *hw)
2569 struct pmc_clk *clk = to_pmc_clk(hw);
2571 pmc_clk_set_state(clk->offs, clk->force_en_shift, 1);
2576 static void pmc_clk_disable(struct clk_hw *hw)
2578 struct pmc_clk *clk = to_pmc_clk(hw);
2580 pmc_clk_set_state(clk->offs, clk->force_en_shift, 0);
2583 static const struct clk_ops pmc_clk_ops = {
2584 .get_parent = pmc_clk_mux_get_parent,
2585 .set_parent = pmc_clk_mux_set_parent,
2586 .determine_rate = __clk_mux_determine_rate,
2587 .is_enabled = pmc_clk_is_enabled,
2588 .enable = pmc_clk_enable,
2589 .disable = pmc_clk_disable,
2593 tegra_pmc_clk_out_register(struct tegra_pmc *pmc,
2594 const struct pmc_clk_init_data *data,
2595 unsigned long offset)
2597 struct clk_init_data init;
2598 struct pmc_clk *pmc_clk;
2600 pmc_clk = devm_kzalloc(pmc->dev, sizeof(*pmc_clk), GFP_KERNEL);
2602 return ERR_PTR(-ENOMEM);
2604 init.name = data->name;
2605 init.ops = &pmc_clk_ops;
2606 init.parent_names = data->parents;
2607 init.num_parents = data->num_parents;
2608 init.flags = CLK_SET_RATE_NO_REPARENT | CLK_SET_RATE_PARENT |
2609 CLK_SET_PARENT_GATE;
2611 pmc_clk->hw.init = &init;
2612 pmc_clk->offs = offset;
2613 pmc_clk->mux_shift = data->mux_shift;
2614 pmc_clk->force_en_shift = data->force_en_shift;
2616 return clk_register(NULL, &pmc_clk->hw);
2619 static int pmc_clk_gate_is_enabled(struct clk_hw *hw)
2621 struct pmc_clk_gate *gate = to_pmc_clk_gate(hw);
2623 return tegra_pmc_readl(pmc, gate->offs) & BIT(gate->shift) ? 1 : 0;
2626 static int pmc_clk_gate_enable(struct clk_hw *hw)
2628 struct pmc_clk_gate *gate = to_pmc_clk_gate(hw);
2630 pmc_clk_set_state(gate->offs, gate->shift, 1);
2635 static void pmc_clk_gate_disable(struct clk_hw *hw)
2637 struct pmc_clk_gate *gate = to_pmc_clk_gate(hw);
2639 pmc_clk_set_state(gate->offs, gate->shift, 0);
2642 static const struct clk_ops pmc_clk_gate_ops = {
2643 .is_enabled = pmc_clk_gate_is_enabled,
2644 .enable = pmc_clk_gate_enable,
2645 .disable = pmc_clk_gate_disable,
2649 tegra_pmc_clk_gate_register(struct tegra_pmc *pmc, const char *name,
2650 const char *parent_name, unsigned long offset,
2653 struct clk_init_data init;
2654 struct pmc_clk_gate *gate;
2656 gate = devm_kzalloc(pmc->dev, sizeof(*gate), GFP_KERNEL);
2658 return ERR_PTR(-ENOMEM);
2661 init.ops = &pmc_clk_gate_ops;
2662 init.parent_names = &parent_name;
2663 init.num_parents = 1;
2666 gate->hw.init = &init;
2667 gate->offs = offset;
2668 gate->shift = shift;
2670 return clk_register(NULL, &gate->hw);
2673 static void tegra_pmc_clock_register(struct tegra_pmc *pmc,
2674 struct device_node *np)
2677 struct clk_onecell_data *clk_data;
2678 unsigned int num_clks;
2681 num_clks = pmc->soc->num_pmc_clks;
2682 if (pmc->soc->has_blink_output)
2688 clk_data = devm_kmalloc(pmc->dev, sizeof(*clk_data), GFP_KERNEL);
2692 clk_data->clks = devm_kcalloc(pmc->dev, TEGRA_PMC_CLK_MAX,
2693 sizeof(*clk_data->clks), GFP_KERNEL);
2694 if (!clk_data->clks)
2697 clk_data->clk_num = TEGRA_PMC_CLK_MAX;
2699 for (i = 0; i < TEGRA_PMC_CLK_MAX; i++)
2700 clk_data->clks[i] = ERR_PTR(-ENOENT);
2702 for (i = 0; i < pmc->soc->num_pmc_clks; i++) {
2703 const struct pmc_clk_init_data *data;
2705 data = pmc->soc->pmc_clks_data + i;
2707 clk = tegra_pmc_clk_out_register(pmc, data, PMC_CLK_OUT_CNTRL);
2709 dev_warn(pmc->dev, "unable to register clock %s: %d\n",
2710 data->name, PTR_ERR_OR_ZERO(clk));
2714 err = clk_register_clkdev(clk, data->name, NULL);
2717 "unable to register %s clock lookup: %d\n",
2722 clk_data->clks[data->clk_id] = clk;
2725 if (pmc->soc->has_blink_output) {
2726 tegra_pmc_writel(pmc, 0x0, PMC_BLINK_TIMER);
2727 clk = tegra_pmc_clk_gate_register(pmc,
2728 "pmc_blink_override",
2731 PMC_DPD_PADS_ORIDE_BLINK);
2734 "unable to register pmc_blink_override: %d\n",
2735 PTR_ERR_OR_ZERO(clk));
2739 clk = tegra_pmc_clk_gate_register(pmc, "pmc_blink",
2740 "pmc_blink_override",
2742 PMC_CNTRL_BLINK_EN);
2745 "unable to register pmc_blink: %d\n",
2746 PTR_ERR_OR_ZERO(clk));
2750 err = clk_register_clkdev(clk, "pmc_blink", NULL);
2753 "unable to register pmc_blink lookup: %d\n",
2758 clk_data->clks[TEGRA_PMC_CLK_BLINK] = clk;
2761 err = of_clk_add_provider(np, of_clk_src_onecell_get, clk_data);
2763 dev_warn(pmc->dev, "failed to add pmc clock provider: %d\n",
2767 static const struct regmap_range pmc_usb_sleepwalk_ranges[] = {
2768 regmap_reg_range(PMC_USB_DEBOUNCE_DEL, PMC_USB_AO),
2769 regmap_reg_range(PMC_UTMIP_UHSIC_TRIGGERS, PMC_UTMIP_UHSIC_SAVED_STATE),
2770 regmap_reg_range(PMC_UTMIP_TERM_PAD_CFG, PMC_UTMIP_UHSIC_FAKE),
2771 regmap_reg_range(PMC_UTMIP_UHSIC_LINE_WAKEUP, PMC_UTMIP_UHSIC_LINE_WAKEUP),
2772 regmap_reg_range(PMC_UTMIP_BIAS_MASTER_CNTRL, PMC_UTMIP_MASTER_CONFIG),
2773 regmap_reg_range(PMC_UTMIP_UHSIC2_TRIGGERS, PMC_UTMIP_MASTER2_CONFIG),
2774 regmap_reg_range(PMC_UTMIP_PAD_CFG0, PMC_UTMIP_UHSIC_SLEEP_CFG1),
2775 regmap_reg_range(PMC_UTMIP_SLEEPWALK_P3, PMC_UTMIP_SLEEPWALK_P3),
2778 static const struct regmap_access_table pmc_usb_sleepwalk_table = {
2779 .yes_ranges = pmc_usb_sleepwalk_ranges,
2780 .n_yes_ranges = ARRAY_SIZE(pmc_usb_sleepwalk_ranges),
2783 static int tegra_pmc_regmap_readl(void *context, unsigned int offset, unsigned int *value)
2785 struct tegra_pmc *pmc = context;
2787 *value = tegra_pmc_readl(pmc, offset);
2791 static int tegra_pmc_regmap_writel(void *context, unsigned int offset, unsigned int value)
2793 struct tegra_pmc *pmc = context;
2795 tegra_pmc_writel(pmc, value, offset);
2799 static const struct regmap_config usb_sleepwalk_regmap_config = {
2800 .name = "usb_sleepwalk",
2805 .rd_table = &pmc_usb_sleepwalk_table,
2806 .wr_table = &pmc_usb_sleepwalk_table,
2807 .reg_read = tegra_pmc_regmap_readl,
2808 .reg_write = tegra_pmc_regmap_writel,
2811 static int tegra_pmc_regmap_init(struct tegra_pmc *pmc)
2813 struct regmap *regmap;
2816 if (pmc->soc->has_usb_sleepwalk) {
2817 regmap = devm_regmap_init(pmc->dev, NULL, pmc, &usb_sleepwalk_regmap_config);
2818 if (IS_ERR(regmap)) {
2819 err = PTR_ERR(regmap);
2820 dev_err(pmc->dev, "failed to allocate register map (%d)\n", err);
2828 static void tegra_pmc_reset_suspend_mode(void *data)
2830 pmc->suspend_mode = TEGRA_SUSPEND_NOT_READY;
2833 static int tegra_pmc_probe(struct platform_device *pdev)
2836 struct resource *res;
2840 * Early initialisation should have configured an initial
2841 * register mapping and setup the soc data pointer. If these
2842 * are not valid then something went badly wrong!
2844 if (WARN_ON(!pmc->base || !pmc->soc))
2847 err = tegra_pmc_parse_dt(pmc, pdev->dev.of_node);
2851 err = devm_add_action_or_reset(&pdev->dev, tegra_pmc_reset_suspend_mode,
2856 /* take over the memory region from the early initialization */
2857 base = devm_platform_ioremap_resource(pdev, 0);
2859 return PTR_ERR(base);
2861 res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "wake");
2863 pmc->wake = devm_ioremap_resource(&pdev->dev, res);
2864 if (IS_ERR(pmc->wake))
2865 return PTR_ERR(pmc->wake);
2870 res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "aotag");
2872 pmc->aotag = devm_ioremap_resource(&pdev->dev, res);
2873 if (IS_ERR(pmc->aotag))
2874 return PTR_ERR(pmc->aotag);
2879 res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "scratch");
2881 pmc->scratch = devm_ioremap_resource(&pdev->dev, res);
2882 if (IS_ERR(pmc->scratch))
2883 return PTR_ERR(pmc->scratch);
2885 pmc->scratch = base;
2888 pmc->clk = devm_clk_get(&pdev->dev, "pclk");
2889 if (IS_ERR(pmc->clk)) {
2890 err = PTR_ERR(pmc->clk);
2892 if (err != -ENOENT) {
2893 dev_err(&pdev->dev, "failed to get pclk: %d\n", err);
2901 * PMC should be last resort for restarting since it soft-resets
2902 * CPU without resetting everything else.
2904 err = devm_register_reboot_notifier(&pdev->dev,
2905 &tegra_pmc_reboot_notifier);
2907 dev_err(&pdev->dev, "unable to register reboot notifier, %d\n",
2912 err = devm_register_sys_off_handler(&pdev->dev,
2913 SYS_OFF_MODE_RESTART,
2915 tegra_pmc_restart_handler, NULL);
2917 dev_err(&pdev->dev, "failed to register sys-off handler: %d\n",
2923 * PMC should be primary power-off method if it soft-resets CPU,
2924 * asking bootloader to shutdown hardware.
2926 err = devm_register_sys_off_handler(&pdev->dev,
2927 SYS_OFF_MODE_POWER_OFF,
2928 SYS_OFF_PRIO_FIRMWARE,
2929 tegra_pmc_power_off_handler, NULL);
2931 dev_err(&pdev->dev, "failed to register sys-off handler: %d\n",
2937 * PCLK clock rate can't be retrieved using CLK API because it
2938 * causes lockup if CPU enters LP2 idle state from some other
2939 * CLK notifier, hence we're caching the rate's value locally.
2942 pmc->clk_nb.notifier_call = tegra_pmc_clk_notify_cb;
2943 err = clk_notifier_register(pmc->clk, &pmc->clk_nb);
2946 "failed to register clk notifier\n");
2950 pmc->rate = clk_get_rate(pmc->clk);
2953 pmc->dev = &pdev->dev;
2955 tegra_pmc_init(pmc);
2957 tegra_pmc_init_tsense_reset(pmc);
2959 tegra_pmc_reset_sysfs_init(pmc);
2961 if (IS_ENABLED(CONFIG_DEBUG_FS)) {
2962 err = tegra_powergate_debugfs_init();
2967 err = tegra_pmc_pinctrl_init(pmc);
2969 goto cleanup_debugfs;
2971 err = tegra_pmc_regmap_init(pmc);
2973 goto cleanup_debugfs;
2975 err = tegra_powergate_init(pmc, pdev->dev.of_node);
2977 goto cleanup_powergates;
2979 err = tegra_pmc_irq_init(pmc);
2981 goto cleanup_powergates;
2983 mutex_lock(&pmc->powergates_lock);
2986 mutex_unlock(&pmc->powergates_lock);
2988 tegra_pmc_clock_register(pmc, pdev->dev.of_node);
2989 platform_set_drvdata(pdev, pmc);
2990 tegra_pm_init_suspend();
2995 tegra_powergate_remove_all(pdev->dev.of_node);
2997 debugfs_remove(pmc->debugfs);
2999 device_remove_file(&pdev->dev, &dev_attr_reset_reason);
3000 device_remove_file(&pdev->dev, &dev_attr_reset_level);
3001 clk_notifier_unregister(pmc->clk, &pmc->clk_nb);
3006 #if defined(CONFIG_PM_SLEEP) && defined(CONFIG_ARM)
3007 static int tegra_pmc_suspend(struct device *dev)
3009 struct tegra_pmc *pmc = dev_get_drvdata(dev);
3011 tegra_pmc_writel(pmc, virt_to_phys(tegra_resume), PMC_SCRATCH41);
3016 static int tegra_pmc_resume(struct device *dev)
3018 struct tegra_pmc *pmc = dev_get_drvdata(dev);
3020 tegra_pmc_writel(pmc, 0x0, PMC_SCRATCH41);
3025 static SIMPLE_DEV_PM_OPS(tegra_pmc_pm_ops, tegra_pmc_suspend, tegra_pmc_resume);
3029 static const char * const tegra20_powergates[] = {
3030 [TEGRA_POWERGATE_CPU] = "cpu",
3031 [TEGRA_POWERGATE_3D] = "td",
3032 [TEGRA_POWERGATE_VENC] = "venc",
3033 [TEGRA_POWERGATE_VDEC] = "vdec",
3034 [TEGRA_POWERGATE_PCIE] = "pcie",
3035 [TEGRA_POWERGATE_L2] = "l2",
3036 [TEGRA_POWERGATE_MPE] = "mpe",
3039 static const struct tegra_pmc_regs tegra20_pmc_regs = {
3042 .dpd_status = 0x1bc,
3044 .dpd2_status = 0x1c4,
3045 .rst_status = 0x1b4,
3046 .rst_source_shift = 0x0,
3047 .rst_source_mask = 0x7,
3048 .rst_level_shift = 0x0,
3049 .rst_level_mask = 0x0,
3052 static void tegra20_pmc_init(struct tegra_pmc *pmc)
3054 u32 value, osc, pmu, off;
3056 /* Always enable CPU power request */
3057 value = tegra_pmc_readl(pmc, PMC_CNTRL);
3058 value |= PMC_CNTRL_CPU_PWRREQ_OE;
3059 tegra_pmc_writel(pmc, value, PMC_CNTRL);
3061 value = tegra_pmc_readl(pmc, PMC_CNTRL);
3063 if (pmc->sysclkreq_high)
3064 value &= ~PMC_CNTRL_SYSCLK_POLARITY;
3066 value |= PMC_CNTRL_SYSCLK_POLARITY;
3068 if (pmc->corereq_high)
3069 value &= ~PMC_CNTRL_PWRREQ_POLARITY;
3071 value |= PMC_CNTRL_PWRREQ_POLARITY;
3073 /* configure the output polarity while the request is tristated */
3074 tegra_pmc_writel(pmc, value, PMC_CNTRL);
3076 /* now enable the request */
3077 value = tegra_pmc_readl(pmc, PMC_CNTRL);
3078 value |= PMC_CNTRL_SYSCLK_OE;
3079 tegra_pmc_writel(pmc, value, PMC_CNTRL);
3081 /* program core timings which are applicable only for suspend state */
3082 if (pmc->suspend_mode != TEGRA_SUSPEND_NONE) {
3083 osc = DIV_ROUND_UP(pmc->core_osc_time * 8192, 1000000);
3084 pmu = DIV_ROUND_UP(pmc->core_pmu_time * 32768, 1000000);
3085 off = DIV_ROUND_UP(pmc->core_off_time * 32768, 1000000);
3086 tegra_pmc_writel(pmc, ((osc << 8) & 0xff00) | (pmu & 0xff),
3087 PMC_COREPWRGOOD_TIMER);
3088 tegra_pmc_writel(pmc, off, PMC_COREPWROFF_TIMER);
3092 static void tegra20_pmc_setup_irq_polarity(struct tegra_pmc *pmc,
3093 struct device_node *np,
3098 value = tegra_pmc_readl(pmc, PMC_CNTRL);
3101 value |= PMC_CNTRL_INTR_POLARITY;
3103 value &= ~PMC_CNTRL_INTR_POLARITY;
3105 tegra_pmc_writel(pmc, value, PMC_CNTRL);
3108 static const struct tegra_pmc_soc tegra20_pmc_soc = {
3109 .supports_core_domain = true,
3110 .num_powergates = ARRAY_SIZE(tegra20_powergates),
3111 .powergates = tegra20_powergates,
3112 .num_cpu_powergates = 0,
3113 .cpu_powergates = NULL,
3114 .has_tsense_reset = false,
3115 .has_gpu_clamps = false,
3116 .needs_mbist_war = false,
3117 .has_impl_33v_pwr = false,
3118 .maybe_tz_only = false,
3123 .regs = &tegra20_pmc_regs,
3124 .init = tegra20_pmc_init,
3125 .setup_irq_polarity = tegra20_pmc_setup_irq_polarity,
3126 .powergate_set = tegra20_powergate_set,
3127 .reset_sources = NULL,
3128 .num_reset_sources = 0,
3129 .reset_levels = NULL,
3130 .num_reset_levels = 0,
3131 .pmc_clks_data = NULL,
3133 .has_blink_output = true,
3134 .has_usb_sleepwalk = true,
3137 static const char * const tegra30_powergates[] = {
3138 [TEGRA_POWERGATE_CPU] = "cpu0",
3139 [TEGRA_POWERGATE_3D] = "td",
3140 [TEGRA_POWERGATE_VENC] = "venc",
3141 [TEGRA_POWERGATE_VDEC] = "vdec",
3142 [TEGRA_POWERGATE_PCIE] = "pcie",
3143 [TEGRA_POWERGATE_L2] = "l2",
3144 [TEGRA_POWERGATE_MPE] = "mpe",
3145 [TEGRA_POWERGATE_HEG] = "heg",
3146 [TEGRA_POWERGATE_SATA] = "sata",
3147 [TEGRA_POWERGATE_CPU1] = "cpu1",
3148 [TEGRA_POWERGATE_CPU2] = "cpu2",
3149 [TEGRA_POWERGATE_CPU3] = "cpu3",
3150 [TEGRA_POWERGATE_CELP] = "celp",
3151 [TEGRA_POWERGATE_3D1] = "td2",
3154 static const u8 tegra30_cpu_powergates[] = {
3155 TEGRA_POWERGATE_CPU,
3156 TEGRA_POWERGATE_CPU1,
3157 TEGRA_POWERGATE_CPU2,
3158 TEGRA_POWERGATE_CPU3,
3161 static const char * const tegra30_reset_sources[] = {
3169 static const struct tegra_pmc_soc tegra30_pmc_soc = {
3170 .supports_core_domain = true,
3171 .num_powergates = ARRAY_SIZE(tegra30_powergates),
3172 .powergates = tegra30_powergates,
3173 .num_cpu_powergates = ARRAY_SIZE(tegra30_cpu_powergates),
3174 .cpu_powergates = tegra30_cpu_powergates,
3175 .has_tsense_reset = true,
3176 .has_gpu_clamps = false,
3177 .needs_mbist_war = false,
3178 .has_impl_33v_pwr = false,
3179 .maybe_tz_only = false,
3184 .regs = &tegra20_pmc_regs,
3185 .init = tegra20_pmc_init,
3186 .setup_irq_polarity = tegra20_pmc_setup_irq_polarity,
3187 .powergate_set = tegra20_powergate_set,
3188 .reset_sources = tegra30_reset_sources,
3189 .num_reset_sources = ARRAY_SIZE(tegra30_reset_sources),
3190 .reset_levels = NULL,
3191 .num_reset_levels = 0,
3192 .pmc_clks_data = tegra_pmc_clks_data,
3193 .num_pmc_clks = ARRAY_SIZE(tegra_pmc_clks_data),
3194 .has_blink_output = true,
3195 .has_usb_sleepwalk = true,
3198 static const char * const tegra114_powergates[] = {
3199 [TEGRA_POWERGATE_CPU] = "crail",
3200 [TEGRA_POWERGATE_3D] = "td",
3201 [TEGRA_POWERGATE_VENC] = "venc",
3202 [TEGRA_POWERGATE_VDEC] = "vdec",
3203 [TEGRA_POWERGATE_MPE] = "mpe",
3204 [TEGRA_POWERGATE_HEG] = "heg",
3205 [TEGRA_POWERGATE_CPU1] = "cpu1",
3206 [TEGRA_POWERGATE_CPU2] = "cpu2",
3207 [TEGRA_POWERGATE_CPU3] = "cpu3",
3208 [TEGRA_POWERGATE_CELP] = "celp",
3209 [TEGRA_POWERGATE_CPU0] = "cpu0",
3210 [TEGRA_POWERGATE_C0NC] = "c0nc",
3211 [TEGRA_POWERGATE_C1NC] = "c1nc",
3212 [TEGRA_POWERGATE_DIS] = "dis",
3213 [TEGRA_POWERGATE_DISB] = "disb",
3214 [TEGRA_POWERGATE_XUSBA] = "xusba",
3215 [TEGRA_POWERGATE_XUSBB] = "xusbb",
3216 [TEGRA_POWERGATE_XUSBC] = "xusbc",
3219 static const u8 tegra114_cpu_powergates[] = {
3220 TEGRA_POWERGATE_CPU0,
3221 TEGRA_POWERGATE_CPU1,
3222 TEGRA_POWERGATE_CPU2,
3223 TEGRA_POWERGATE_CPU3,
3226 static const struct tegra_pmc_soc tegra114_pmc_soc = {
3227 .supports_core_domain = false,
3228 .num_powergates = ARRAY_SIZE(tegra114_powergates),
3229 .powergates = tegra114_powergates,
3230 .num_cpu_powergates = ARRAY_SIZE(tegra114_cpu_powergates),
3231 .cpu_powergates = tegra114_cpu_powergates,
3232 .has_tsense_reset = true,
3233 .has_gpu_clamps = false,
3234 .needs_mbist_war = false,
3235 .has_impl_33v_pwr = false,
3236 .maybe_tz_only = false,
3241 .regs = &tegra20_pmc_regs,
3242 .init = tegra20_pmc_init,
3243 .setup_irq_polarity = tegra20_pmc_setup_irq_polarity,
3244 .powergate_set = tegra114_powergate_set,
3245 .reset_sources = tegra30_reset_sources,
3246 .num_reset_sources = ARRAY_SIZE(tegra30_reset_sources),
3247 .reset_levels = NULL,
3248 .num_reset_levels = 0,
3249 .pmc_clks_data = tegra_pmc_clks_data,
3250 .num_pmc_clks = ARRAY_SIZE(tegra_pmc_clks_data),
3251 .has_blink_output = true,
3252 .has_usb_sleepwalk = true,
3255 static const char * const tegra124_powergates[] = {
3256 [TEGRA_POWERGATE_CPU] = "crail",
3257 [TEGRA_POWERGATE_3D] = "3d",
3258 [TEGRA_POWERGATE_VENC] = "venc",
3259 [TEGRA_POWERGATE_PCIE] = "pcie",
3260 [TEGRA_POWERGATE_VDEC] = "vdec",
3261 [TEGRA_POWERGATE_MPE] = "mpe",
3262 [TEGRA_POWERGATE_HEG] = "heg",
3263 [TEGRA_POWERGATE_SATA] = "sata",
3264 [TEGRA_POWERGATE_CPU1] = "cpu1",
3265 [TEGRA_POWERGATE_CPU2] = "cpu2",
3266 [TEGRA_POWERGATE_CPU3] = "cpu3",
3267 [TEGRA_POWERGATE_CELP] = "celp",
3268 [TEGRA_POWERGATE_CPU0] = "cpu0",
3269 [TEGRA_POWERGATE_C0NC] = "c0nc",
3270 [TEGRA_POWERGATE_C1NC] = "c1nc",
3271 [TEGRA_POWERGATE_SOR] = "sor",
3272 [TEGRA_POWERGATE_DIS] = "dis",
3273 [TEGRA_POWERGATE_DISB] = "disb",
3274 [TEGRA_POWERGATE_XUSBA] = "xusba",
3275 [TEGRA_POWERGATE_XUSBB] = "xusbb",
3276 [TEGRA_POWERGATE_XUSBC] = "xusbc",
3277 [TEGRA_POWERGATE_VIC] = "vic",
3278 [TEGRA_POWERGATE_IRAM] = "iram",
3281 static const u8 tegra124_cpu_powergates[] = {
3282 TEGRA_POWERGATE_CPU0,
3283 TEGRA_POWERGATE_CPU1,
3284 TEGRA_POWERGATE_CPU2,
3285 TEGRA_POWERGATE_CPU3,
3288 #define TEGRA_IO_PAD(_id, _dpd, _voltage, _name) \
3289 ((struct tegra_io_pad_soc) { \
3292 .voltage = (_voltage), \
3296 #define TEGRA_IO_PIN_DESC(_id, _dpd, _voltage, _name) \
3297 ((struct pinctrl_pin_desc) { \
3302 #define TEGRA124_IO_PAD_TABLE(_pad) \
3303 /* .id .dpd .voltage .name */ \
3304 _pad(TEGRA_IO_PAD_AUDIO, 17, UINT_MAX, "audio"), \
3305 _pad(TEGRA_IO_PAD_BB, 15, UINT_MAX, "bb"), \
3306 _pad(TEGRA_IO_PAD_CAM, 36, UINT_MAX, "cam"), \
3307 _pad(TEGRA_IO_PAD_COMP, 22, UINT_MAX, "comp"), \
3308 _pad(TEGRA_IO_PAD_CSIA, 0, UINT_MAX, "csia"), \
3309 _pad(TEGRA_IO_PAD_CSIB, 1, UINT_MAX, "csb"), \
3310 _pad(TEGRA_IO_PAD_CSIE, 44, UINT_MAX, "cse"), \
3311 _pad(TEGRA_IO_PAD_DSI, 2, UINT_MAX, "dsi"), \
3312 _pad(TEGRA_IO_PAD_DSIB, 39, UINT_MAX, "dsib"), \
3313 _pad(TEGRA_IO_PAD_DSIC, 40, UINT_MAX, "dsic"), \
3314 _pad(TEGRA_IO_PAD_DSID, 41, UINT_MAX, "dsid"), \
3315 _pad(TEGRA_IO_PAD_HDMI, 28, UINT_MAX, "hdmi"), \
3316 _pad(TEGRA_IO_PAD_HSIC, 19, UINT_MAX, "hsic"), \
3317 _pad(TEGRA_IO_PAD_HV, 38, UINT_MAX, "hv"), \
3318 _pad(TEGRA_IO_PAD_LVDS, 57, UINT_MAX, "lvds"), \
3319 _pad(TEGRA_IO_PAD_MIPI_BIAS, 3, UINT_MAX, "mipi-bias"), \
3320 _pad(TEGRA_IO_PAD_NAND, 13, UINT_MAX, "nand"), \
3321 _pad(TEGRA_IO_PAD_PEX_BIAS, 4, UINT_MAX, "pex-bias"), \
3322 _pad(TEGRA_IO_PAD_PEX_CLK1, 5, UINT_MAX, "pex-clk1"), \
3323 _pad(TEGRA_IO_PAD_PEX_CLK2, 6, UINT_MAX, "pex-clk2"), \
3324 _pad(TEGRA_IO_PAD_PEX_CNTRL, 32, UINT_MAX, "pex-cntrl"), \
3325 _pad(TEGRA_IO_PAD_SDMMC1, 33, UINT_MAX, "sdmmc1"), \
3326 _pad(TEGRA_IO_PAD_SDMMC3, 34, UINT_MAX, "sdmmc3"), \
3327 _pad(TEGRA_IO_PAD_SDMMC4, 35, UINT_MAX, "sdmmc4"), \
3328 _pad(TEGRA_IO_PAD_SYS_DDC, 58, UINT_MAX, "sys_ddc"), \
3329 _pad(TEGRA_IO_PAD_UART, 14, UINT_MAX, "uart"), \
3330 _pad(TEGRA_IO_PAD_USB0, 9, UINT_MAX, "usb0"), \
3331 _pad(TEGRA_IO_PAD_USB1, 10, UINT_MAX, "usb1"), \
3332 _pad(TEGRA_IO_PAD_USB2, 11, UINT_MAX, "usb2"), \
3333 _pad(TEGRA_IO_PAD_USB_BIAS, 12, UINT_MAX, "usb_bias")
3335 static const struct tegra_io_pad_soc tegra124_io_pads[] = {
3336 TEGRA124_IO_PAD_TABLE(TEGRA_IO_PAD)
3339 static const struct pinctrl_pin_desc tegra124_pin_descs[] = {
3340 TEGRA124_IO_PAD_TABLE(TEGRA_IO_PIN_DESC)
3343 static const struct tegra_pmc_soc tegra124_pmc_soc = {
3344 .supports_core_domain = false,
3345 .num_powergates = ARRAY_SIZE(tegra124_powergates),
3346 .powergates = tegra124_powergates,
3347 .num_cpu_powergates = ARRAY_SIZE(tegra124_cpu_powergates),
3348 .cpu_powergates = tegra124_cpu_powergates,
3349 .has_tsense_reset = true,
3350 .has_gpu_clamps = true,
3351 .needs_mbist_war = false,
3352 .has_impl_33v_pwr = false,
3353 .maybe_tz_only = false,
3354 .num_io_pads = ARRAY_SIZE(tegra124_io_pads),
3355 .io_pads = tegra124_io_pads,
3356 .num_pin_descs = ARRAY_SIZE(tegra124_pin_descs),
3357 .pin_descs = tegra124_pin_descs,
3358 .regs = &tegra20_pmc_regs,
3359 .init = tegra20_pmc_init,
3360 .setup_irq_polarity = tegra20_pmc_setup_irq_polarity,
3361 .powergate_set = tegra114_powergate_set,
3362 .reset_sources = tegra30_reset_sources,
3363 .num_reset_sources = ARRAY_SIZE(tegra30_reset_sources),
3364 .reset_levels = NULL,
3365 .num_reset_levels = 0,
3366 .pmc_clks_data = tegra_pmc_clks_data,
3367 .num_pmc_clks = ARRAY_SIZE(tegra_pmc_clks_data),
3368 .has_blink_output = true,
3369 .has_usb_sleepwalk = true,
3372 static const char * const tegra210_powergates[] = {
3373 [TEGRA_POWERGATE_CPU] = "crail",
3374 [TEGRA_POWERGATE_3D] = "3d",
3375 [TEGRA_POWERGATE_VENC] = "venc",
3376 [TEGRA_POWERGATE_PCIE] = "pcie",
3377 [TEGRA_POWERGATE_MPE] = "mpe",
3378 [TEGRA_POWERGATE_SATA] = "sata",
3379 [TEGRA_POWERGATE_CPU1] = "cpu1",
3380 [TEGRA_POWERGATE_CPU2] = "cpu2",
3381 [TEGRA_POWERGATE_CPU3] = "cpu3",
3382 [TEGRA_POWERGATE_CPU0] = "cpu0",
3383 [TEGRA_POWERGATE_C0NC] = "c0nc",
3384 [TEGRA_POWERGATE_SOR] = "sor",
3385 [TEGRA_POWERGATE_DIS] = "dis",
3386 [TEGRA_POWERGATE_DISB] = "disb",
3387 [TEGRA_POWERGATE_XUSBA] = "xusba",
3388 [TEGRA_POWERGATE_XUSBB] = "xusbb",
3389 [TEGRA_POWERGATE_XUSBC] = "xusbc",
3390 [TEGRA_POWERGATE_VIC] = "vic",
3391 [TEGRA_POWERGATE_IRAM] = "iram",
3392 [TEGRA_POWERGATE_NVDEC] = "nvdec",
3393 [TEGRA_POWERGATE_NVJPG] = "nvjpg",
3394 [TEGRA_POWERGATE_AUD] = "aud",
3395 [TEGRA_POWERGATE_DFD] = "dfd",
3396 [TEGRA_POWERGATE_VE2] = "ve2",
3399 static const u8 tegra210_cpu_powergates[] = {
3400 TEGRA_POWERGATE_CPU0,
3401 TEGRA_POWERGATE_CPU1,
3402 TEGRA_POWERGATE_CPU2,
3403 TEGRA_POWERGATE_CPU3,
3406 #define TEGRA210_IO_PAD_TABLE(_pad) \
3407 /* .id .dpd .voltage .name */ \
3408 _pad(TEGRA_IO_PAD_AUDIO, 17, 5, "audio"), \
3409 _pad(TEGRA_IO_PAD_AUDIO_HV, 61, 18, "audio-hv"), \
3410 _pad(TEGRA_IO_PAD_CAM, 36, 10, "cam"), \
3411 _pad(TEGRA_IO_PAD_CSIA, 0, UINT_MAX, "csia"), \
3412 _pad(TEGRA_IO_PAD_CSIB, 1, UINT_MAX, "csib"), \
3413 _pad(TEGRA_IO_PAD_CSIC, 42, UINT_MAX, "csic"), \
3414 _pad(TEGRA_IO_PAD_CSID, 43, UINT_MAX, "csid"), \
3415 _pad(TEGRA_IO_PAD_CSIE, 44, UINT_MAX, "csie"), \
3416 _pad(TEGRA_IO_PAD_CSIF, 45, UINT_MAX, "csif"), \
3417 _pad(TEGRA_IO_PAD_DBG, 25, 19, "dbg"), \
3418 _pad(TEGRA_IO_PAD_DEBUG_NONAO, 26, UINT_MAX, "debug-nonao"), \
3419 _pad(TEGRA_IO_PAD_DMIC, 50, 20, "dmic"), \
3420 _pad(TEGRA_IO_PAD_DP, 51, UINT_MAX, "dp"), \
3421 _pad(TEGRA_IO_PAD_DSI, 2, UINT_MAX, "dsi"), \
3422 _pad(TEGRA_IO_PAD_DSIB, 39, UINT_MAX, "dsib"), \
3423 _pad(TEGRA_IO_PAD_DSIC, 40, UINT_MAX, "dsic"), \
3424 _pad(TEGRA_IO_PAD_DSID, 41, UINT_MAX, "dsid"), \
3425 _pad(TEGRA_IO_PAD_EMMC, 35, UINT_MAX, "emmc"), \
3426 _pad(TEGRA_IO_PAD_EMMC2, 37, UINT_MAX, "emmc2"), \
3427 _pad(TEGRA_IO_PAD_GPIO, 27, 21, "gpio"), \
3428 _pad(TEGRA_IO_PAD_HDMI, 28, UINT_MAX, "hdmi"), \
3429 _pad(TEGRA_IO_PAD_HSIC, 19, UINT_MAX, "hsic"), \
3430 _pad(TEGRA_IO_PAD_LVDS, 57, UINT_MAX, "lvds"), \
3431 _pad(TEGRA_IO_PAD_MIPI_BIAS, 3, UINT_MAX, "mipi-bias"), \
3432 _pad(TEGRA_IO_PAD_PEX_BIAS, 4, UINT_MAX, "pex-bias"), \
3433 _pad(TEGRA_IO_PAD_PEX_CLK1, 5, UINT_MAX, "pex-clk1"), \
3434 _pad(TEGRA_IO_PAD_PEX_CLK2, 6, UINT_MAX, "pex-clk2"), \
3435 _pad(TEGRA_IO_PAD_PEX_CNTRL, UINT_MAX, 11, "pex-cntrl"), \
3436 _pad(TEGRA_IO_PAD_SDMMC1, 33, 12, "sdmmc1"), \
3437 _pad(TEGRA_IO_PAD_SDMMC3, 34, 13, "sdmmc3"), \
3438 _pad(TEGRA_IO_PAD_SPI, 46, 22, "spi"), \
3439 _pad(TEGRA_IO_PAD_SPI_HV, 47, 23, "spi-hv"), \
3440 _pad(TEGRA_IO_PAD_UART, 14, 2, "uart"), \
3441 _pad(TEGRA_IO_PAD_USB0, 9, UINT_MAX, "usb0"), \
3442 _pad(TEGRA_IO_PAD_USB1, 10, UINT_MAX, "usb1"), \
3443 _pad(TEGRA_IO_PAD_USB2, 11, UINT_MAX, "usb2"), \
3444 _pad(TEGRA_IO_PAD_USB3, 18, UINT_MAX, "usb3"), \
3445 _pad(TEGRA_IO_PAD_USB_BIAS, 12, UINT_MAX, "usb-bias")
3447 static const struct tegra_io_pad_soc tegra210_io_pads[] = {
3448 TEGRA210_IO_PAD_TABLE(TEGRA_IO_PAD)
3451 static const struct pinctrl_pin_desc tegra210_pin_descs[] = {
3452 TEGRA210_IO_PAD_TABLE(TEGRA_IO_PIN_DESC)
3455 static const char * const tegra210_reset_sources[] = {
3464 static const struct tegra_wake_event tegra210_wake_events[] = {
3465 TEGRA_WAKE_IRQ("rtc", 16, 2),
3466 TEGRA_WAKE_IRQ("pmu", 51, 86),
3469 static const struct tegra_pmc_soc tegra210_pmc_soc = {
3470 .supports_core_domain = false,
3471 .num_powergates = ARRAY_SIZE(tegra210_powergates),
3472 .powergates = tegra210_powergates,
3473 .num_cpu_powergates = ARRAY_SIZE(tegra210_cpu_powergates),
3474 .cpu_powergates = tegra210_cpu_powergates,
3475 .has_tsense_reset = true,
3476 .has_gpu_clamps = true,
3477 .needs_mbist_war = true,
3478 .has_impl_33v_pwr = false,
3479 .maybe_tz_only = true,
3480 .num_io_pads = ARRAY_SIZE(tegra210_io_pads),
3481 .io_pads = tegra210_io_pads,
3482 .num_pin_descs = ARRAY_SIZE(tegra210_pin_descs),
3483 .pin_descs = tegra210_pin_descs,
3484 .regs = &tegra20_pmc_regs,
3485 .init = tegra20_pmc_init,
3486 .setup_irq_polarity = tegra20_pmc_setup_irq_polarity,
3487 .powergate_set = tegra114_powergate_set,
3488 .irq_set_wake = tegra210_pmc_irq_set_wake,
3489 .irq_set_type = tegra210_pmc_irq_set_type,
3490 .reset_sources = tegra210_reset_sources,
3491 .num_reset_sources = ARRAY_SIZE(tegra210_reset_sources),
3492 .reset_levels = NULL,
3493 .num_reset_levels = 0,
3494 .num_wake_events = ARRAY_SIZE(tegra210_wake_events),
3495 .wake_events = tegra210_wake_events,
3496 .pmc_clks_data = tegra_pmc_clks_data,
3497 .num_pmc_clks = ARRAY_SIZE(tegra_pmc_clks_data),
3498 .has_blink_output = true,
3499 .has_usb_sleepwalk = true,
3502 #define TEGRA186_IO_PAD_TABLE(_pad) \
3503 /* .id .dpd .voltage .name */ \
3504 _pad(TEGRA_IO_PAD_CSIA, 0, UINT_MAX, "csia"), \
3505 _pad(TEGRA_IO_PAD_CSIB, 1, UINT_MAX, "csib"), \
3506 _pad(TEGRA_IO_PAD_DSI, 2, UINT_MAX, "dsi"), \
3507 _pad(TEGRA_IO_PAD_MIPI_BIAS, 3, UINT_MAX, "mipi-bias"), \
3508 _pad(TEGRA_IO_PAD_PEX_CLK_BIAS, 4, UINT_MAX, "pex-clk-bias"), \
3509 _pad(TEGRA_IO_PAD_PEX_CLK3, 5, UINT_MAX, "pex-clk3"), \
3510 _pad(TEGRA_IO_PAD_PEX_CLK2, 6, UINT_MAX, "pex-clk2"), \
3511 _pad(TEGRA_IO_PAD_PEX_CLK1, 7, UINT_MAX, "pex-clk1"), \
3512 _pad(TEGRA_IO_PAD_USB0, 9, UINT_MAX, "usb0"), \
3513 _pad(TEGRA_IO_PAD_USB1, 10, UINT_MAX, "usb1"), \
3514 _pad(TEGRA_IO_PAD_USB2, 11, UINT_MAX, "usb2"), \
3515 _pad(TEGRA_IO_PAD_USB_BIAS, 12, UINT_MAX, "usb-bias"), \
3516 _pad(TEGRA_IO_PAD_UART, 14, UINT_MAX, "uart"), \
3517 _pad(TEGRA_IO_PAD_AUDIO, 17, UINT_MAX, "audio"), \
3518 _pad(TEGRA_IO_PAD_HSIC, 19, UINT_MAX, "hsic"), \
3519 _pad(TEGRA_IO_PAD_DBG, 25, UINT_MAX, "dbg"), \
3520 _pad(TEGRA_IO_PAD_HDMI_DP0, 28, UINT_MAX, "hdmi-dp0"), \
3521 _pad(TEGRA_IO_PAD_HDMI_DP1, 29, UINT_MAX, "hdmi-dp1"), \
3522 _pad(TEGRA_IO_PAD_PEX_CNTRL, 32, UINT_MAX, "pex-cntrl"), \
3523 _pad(TEGRA_IO_PAD_SDMMC2_HV, 34, 5, "sdmmc2-hv"), \
3524 _pad(TEGRA_IO_PAD_SDMMC4, 36, UINT_MAX, "sdmmc4"), \
3525 _pad(TEGRA_IO_PAD_CAM, 38, UINT_MAX, "cam"), \
3526 _pad(TEGRA_IO_PAD_DSIB, 40, UINT_MAX, "dsib"), \
3527 _pad(TEGRA_IO_PAD_DSIC, 41, UINT_MAX, "dsic"), \
3528 _pad(TEGRA_IO_PAD_DSID, 42, UINT_MAX, "dsid"), \
3529 _pad(TEGRA_IO_PAD_CSIC, 43, UINT_MAX, "csic"), \
3530 _pad(TEGRA_IO_PAD_CSID, 44, UINT_MAX, "csid"), \
3531 _pad(TEGRA_IO_PAD_CSIE, 45, UINT_MAX, "csie"), \
3532 _pad(TEGRA_IO_PAD_CSIF, 46, UINT_MAX, "csif"), \
3533 _pad(TEGRA_IO_PAD_SPI, 47, UINT_MAX, "spi"), \
3534 _pad(TEGRA_IO_PAD_UFS, 49, UINT_MAX, "ufs"), \
3535 _pad(TEGRA_IO_PAD_DMIC_HV, 52, 2, "dmic-hv"), \
3536 _pad(TEGRA_IO_PAD_EDP, 53, UINT_MAX, "edp"), \
3537 _pad(TEGRA_IO_PAD_SDMMC1_HV, 55, 4, "sdmmc1-hv"), \
3538 _pad(TEGRA_IO_PAD_SDMMC3_HV, 56, 6, "sdmmc3-hv"), \
3539 _pad(TEGRA_IO_PAD_CONN, 60, UINT_MAX, "conn"), \
3540 _pad(TEGRA_IO_PAD_AUDIO_HV, 61, 1, "audio-hv"), \
3541 _pad(TEGRA_IO_PAD_AO_HV, UINT_MAX, 0, "ao-hv")
3543 static const struct tegra_io_pad_soc tegra186_io_pads[] = {
3544 TEGRA186_IO_PAD_TABLE(TEGRA_IO_PAD)
3547 static const struct pinctrl_pin_desc tegra186_pin_descs[] = {
3548 TEGRA186_IO_PAD_TABLE(TEGRA_IO_PIN_DESC)
3551 static const struct tegra_pmc_regs tegra186_pmc_regs = {
3556 .dpd2_status = 0x80,
3558 .rst_source_shift = 0x2,
3559 .rst_source_mask = 0x3c,
3560 .rst_level_shift = 0x0,
3561 .rst_level_mask = 0x3,
3564 static void tegra186_pmc_setup_irq_polarity(struct tegra_pmc *pmc,
3565 struct device_node *np,
3568 struct resource regs;
3573 index = of_property_match_string(np, "reg-names", "wake");
3575 dev_err(pmc->dev, "failed to find PMC wake registers\n");
3579 of_address_to_resource(np, index, ®s);
3581 wake = ioremap(regs.start, resource_size(®s));
3583 dev_err(pmc->dev, "failed to map PMC wake registers\n");
3587 value = readl(wake + WAKE_AOWAKE_CTRL);
3590 value |= WAKE_AOWAKE_CTRL_INTR_POLARITY;
3592 value &= ~WAKE_AOWAKE_CTRL_INTR_POLARITY;
3594 writel(value, wake + WAKE_AOWAKE_CTRL);
3599 static const char * const tegra186_reset_sources[] = {
3617 static const char * const tegra186_reset_levels[] = {
3618 "L0", "L1", "L2", "WARM"
3621 static const struct tegra_wake_event tegra186_wake_events[] = {
3622 TEGRA_WAKE_IRQ("pmu", 24, 209),
3623 TEGRA_WAKE_GPIO("power", 29, 1, TEGRA186_AON_GPIO(FF, 0)),
3624 TEGRA_WAKE_IRQ("rtc", 73, 10),
3627 static const struct tegra_pmc_soc tegra186_pmc_soc = {
3628 .supports_core_domain = false,
3629 .num_powergates = 0,
3631 .num_cpu_powergates = 0,
3632 .cpu_powergates = NULL,
3633 .has_tsense_reset = false,
3634 .has_gpu_clamps = false,
3635 .needs_mbist_war = false,
3636 .has_impl_33v_pwr = true,
3637 .maybe_tz_only = false,
3638 .num_io_pads = ARRAY_SIZE(tegra186_io_pads),
3639 .io_pads = tegra186_io_pads,
3640 .num_pin_descs = ARRAY_SIZE(tegra186_pin_descs),
3641 .pin_descs = tegra186_pin_descs,
3642 .regs = &tegra186_pmc_regs,
3644 .setup_irq_polarity = tegra186_pmc_setup_irq_polarity,
3645 .irq_set_wake = tegra186_pmc_irq_set_wake,
3646 .irq_set_type = tegra186_pmc_irq_set_type,
3647 .reset_sources = tegra186_reset_sources,
3648 .num_reset_sources = ARRAY_SIZE(tegra186_reset_sources),
3649 .reset_levels = tegra186_reset_levels,
3650 .num_reset_levels = ARRAY_SIZE(tegra186_reset_levels),
3651 .num_wake_events = ARRAY_SIZE(tegra186_wake_events),
3652 .wake_events = tegra186_wake_events,
3653 .pmc_clks_data = NULL,
3655 .has_blink_output = false,
3656 .has_usb_sleepwalk = false,
3659 #define TEGRA194_IO_PAD_TABLE(_pad) \
3660 /* .id .dpd .voltage .name */ \
3661 _pad(TEGRA_IO_PAD_CSIA, 0, UINT_MAX, "csia"), \
3662 _pad(TEGRA_IO_PAD_CSIB, 1, UINT_MAX, "csib"), \
3663 _pad(TEGRA_IO_PAD_MIPI_BIAS, 3, UINT_MAX, "mipi-bias"), \
3664 _pad(TEGRA_IO_PAD_PEX_CLK_BIAS, 4, UINT_MAX, "pex-clk-bias"), \
3665 _pad(TEGRA_IO_PAD_PEX_CLK3, 5, UINT_MAX, "pex-clk3"), \
3666 _pad(TEGRA_IO_PAD_PEX_CLK2, 6, UINT_MAX, "pex-clk2"), \
3667 _pad(TEGRA_IO_PAD_PEX_CLK1, 7, UINT_MAX, "pex-clk1"), \
3668 _pad(TEGRA_IO_PAD_EQOS, 8, UINT_MAX, "eqos"), \
3669 _pad(TEGRA_IO_PAD_PEX_CLK_2_BIAS, 9, UINT_MAX, "pex-clk-2-bias"), \
3670 _pad(TEGRA_IO_PAD_PEX_CLK_2, 10, UINT_MAX, "pex-clk-2"), \
3671 _pad(TEGRA_IO_PAD_DAP3, 11, UINT_MAX, "dap3"), \
3672 _pad(TEGRA_IO_PAD_DAP5, 12, UINT_MAX, "dap5"), \
3673 _pad(TEGRA_IO_PAD_UART, 14, UINT_MAX, "uart"), \
3674 _pad(TEGRA_IO_PAD_PWR_CTL, 15, UINT_MAX, "pwr-ctl"), \
3675 _pad(TEGRA_IO_PAD_SOC_GPIO53, 16, UINT_MAX, "soc-gpio53"), \
3676 _pad(TEGRA_IO_PAD_AUDIO, 17, UINT_MAX, "audio"), \
3677 _pad(TEGRA_IO_PAD_GP_PWM2, 18, UINT_MAX, "gp-pwm2"), \
3678 _pad(TEGRA_IO_PAD_GP_PWM3, 19, UINT_MAX, "gp-pwm3"), \
3679 _pad(TEGRA_IO_PAD_SOC_GPIO12, 20, UINT_MAX, "soc-gpio12"), \
3680 _pad(TEGRA_IO_PAD_SOC_GPIO13, 21, UINT_MAX, "soc-gpio13"), \
3681 _pad(TEGRA_IO_PAD_SOC_GPIO10, 22, UINT_MAX, "soc-gpio10"), \
3682 _pad(TEGRA_IO_PAD_UART4, 23, UINT_MAX, "uart4"), \
3683 _pad(TEGRA_IO_PAD_UART5, 24, UINT_MAX, "uart5"), \
3684 _pad(TEGRA_IO_PAD_DBG, 25, UINT_MAX, "dbg"), \
3685 _pad(TEGRA_IO_PAD_HDMI_DP3, 26, UINT_MAX, "hdmi-dp3"), \
3686 _pad(TEGRA_IO_PAD_HDMI_DP2, 27, UINT_MAX, "hdmi-dp2"), \
3687 _pad(TEGRA_IO_PAD_HDMI_DP0, 28, UINT_MAX, "hdmi-dp0"), \
3688 _pad(TEGRA_IO_PAD_HDMI_DP1, 29, UINT_MAX, "hdmi-dp1"), \
3689 _pad(TEGRA_IO_PAD_PEX_CNTRL, 32, UINT_MAX, "pex-cntrl"), \
3690 _pad(TEGRA_IO_PAD_PEX_CTL2, 33, UINT_MAX, "pex-ctl2"), \
3691 _pad(TEGRA_IO_PAD_PEX_L0_RST_N, 34, UINT_MAX, "pex-l0-rst"), \
3692 _pad(TEGRA_IO_PAD_PEX_L1_RST_N, 35, UINT_MAX, "pex-l1-rst"), \
3693 _pad(TEGRA_IO_PAD_SDMMC4, 36, UINT_MAX, "sdmmc4"), \
3694 _pad(TEGRA_IO_PAD_PEX_L5_RST_N, 37, UINT_MAX, "pex-l5-rst"), \
3695 _pad(TEGRA_IO_PAD_CAM, 38, UINT_MAX, "cam"), \
3696 _pad(TEGRA_IO_PAD_CSIC, 43, UINT_MAX, "csic"), \
3697 _pad(TEGRA_IO_PAD_CSID, 44, UINT_MAX, "csid"), \
3698 _pad(TEGRA_IO_PAD_CSIE, 45, UINT_MAX, "csie"), \
3699 _pad(TEGRA_IO_PAD_CSIF, 46, UINT_MAX, "csif"), \
3700 _pad(TEGRA_IO_PAD_SPI, 47, UINT_MAX, "spi"), \
3701 _pad(TEGRA_IO_PAD_UFS, 49, UINT_MAX, "ufs"), \
3702 _pad(TEGRA_IO_PAD_CSIG, 50, UINT_MAX, "csig"), \
3703 _pad(TEGRA_IO_PAD_CSIH, 51, UINT_MAX, "csih"), \
3704 _pad(TEGRA_IO_PAD_EDP, 53, UINT_MAX, "edp"), \
3705 _pad(TEGRA_IO_PAD_SDMMC1_HV, 55, 4, "sdmmc1-hv"), \
3706 _pad(TEGRA_IO_PAD_SDMMC3_HV, 56, 6, "sdmmc3-hv"), \
3707 _pad(TEGRA_IO_PAD_CONN, 60, UINT_MAX, "conn"), \
3708 _pad(TEGRA_IO_PAD_AUDIO_HV, 61, 1, "audio-hv"), \
3709 _pad(TEGRA_IO_PAD_AO_HV, UINT_MAX, 0, "ao-hv")
3711 static const struct tegra_io_pad_soc tegra194_io_pads[] = {
3712 TEGRA194_IO_PAD_TABLE(TEGRA_IO_PAD)
3715 static const struct pinctrl_pin_desc tegra194_pin_descs[] = {
3716 TEGRA194_IO_PAD_TABLE(TEGRA_IO_PIN_DESC)
3719 static const struct tegra_pmc_regs tegra194_pmc_regs = {
3724 .dpd2_status = 0x80,
3726 .rst_source_shift = 0x2,
3727 .rst_source_mask = 0x7c,
3728 .rst_level_shift = 0x0,
3729 .rst_level_mask = 0x3,
3732 static const char * const tegra194_reset_sources[] = {
3756 static const struct tegra_wake_event tegra194_wake_events[] = {
3757 TEGRA_WAKE_IRQ("pmu", 24, 209),
3758 TEGRA_WAKE_GPIO("power", 29, 1, TEGRA194_AON_GPIO(EE, 4)),
3759 TEGRA_WAKE_IRQ("rtc", 73, 10),
3762 static const struct tegra_pmc_soc tegra194_pmc_soc = {
3763 .supports_core_domain = false,
3764 .num_powergates = 0,
3766 .num_cpu_powergates = 0,
3767 .cpu_powergates = NULL,
3768 .has_tsense_reset = false,
3769 .has_gpu_clamps = false,
3770 .needs_mbist_war = false,
3771 .has_impl_33v_pwr = true,
3772 .maybe_tz_only = false,
3773 .num_io_pads = ARRAY_SIZE(tegra194_io_pads),
3774 .io_pads = tegra194_io_pads,
3775 .num_pin_descs = ARRAY_SIZE(tegra194_pin_descs),
3776 .pin_descs = tegra194_pin_descs,
3777 .regs = &tegra194_pmc_regs,
3779 .setup_irq_polarity = tegra186_pmc_setup_irq_polarity,
3780 .irq_set_wake = tegra186_pmc_irq_set_wake,
3781 .irq_set_type = tegra186_pmc_irq_set_type,
3782 .reset_sources = tegra194_reset_sources,
3783 .num_reset_sources = ARRAY_SIZE(tegra194_reset_sources),
3784 .reset_levels = tegra186_reset_levels,
3785 .num_reset_levels = ARRAY_SIZE(tegra186_reset_levels),
3786 .num_wake_events = ARRAY_SIZE(tegra194_wake_events),
3787 .wake_events = tegra194_wake_events,
3788 .pmc_clks_data = NULL,
3790 .has_blink_output = false,
3791 .has_usb_sleepwalk = false,
3794 static const struct tegra_pmc_regs tegra234_pmc_regs = {
3801 .rst_source_shift = 0x2,
3802 .rst_source_mask = 0xfc,
3803 .rst_level_shift = 0x0,
3804 .rst_level_mask = 0x3,
3807 static const char * const tegra234_reset_sources[] = {
3808 "SYS_RESET_N", /* 0x0 */
3832 "CSITE_SW", /* 0x18 */
3840 "FSI_R52C0WDT", /* 0x20 */
3845 "FSI_VMON", /* 0x25 */
3848 static const struct tegra_wake_event tegra234_wake_events[] = {
3849 TEGRA_WAKE_GPIO("power", 29, 1, TEGRA234_AON_GPIO(EE, 4)),
3850 TEGRA_WAKE_IRQ("rtc", 73, 10),
3853 static const struct tegra_pmc_soc tegra234_pmc_soc = {
3854 .supports_core_domain = false,
3855 .num_powergates = 0,
3857 .num_cpu_powergates = 0,
3858 .cpu_powergates = NULL,
3859 .has_tsense_reset = false,
3860 .has_gpu_clamps = false,
3861 .needs_mbist_war = false,
3862 .has_impl_33v_pwr = true,
3863 .maybe_tz_only = false,
3868 .regs = &tegra234_pmc_regs,
3870 .setup_irq_polarity = tegra186_pmc_setup_irq_polarity,
3871 .irq_set_wake = tegra186_pmc_irq_set_wake,
3872 .irq_set_type = tegra186_pmc_irq_set_type,
3873 .reset_sources = tegra234_reset_sources,
3874 .num_reset_sources = ARRAY_SIZE(tegra234_reset_sources),
3875 .reset_levels = tegra186_reset_levels,
3876 .num_reset_levels = ARRAY_SIZE(tegra186_reset_levels),
3877 .num_wake_events = ARRAY_SIZE(tegra234_wake_events),
3878 .wake_events = tegra234_wake_events,
3879 .pmc_clks_data = NULL,
3881 .has_blink_output = false,
3884 static const struct of_device_id tegra_pmc_match[] = {
3885 { .compatible = "nvidia,tegra234-pmc", .data = &tegra234_pmc_soc },
3886 { .compatible = "nvidia,tegra194-pmc", .data = &tegra194_pmc_soc },
3887 { .compatible = "nvidia,tegra186-pmc", .data = &tegra186_pmc_soc },
3888 { .compatible = "nvidia,tegra210-pmc", .data = &tegra210_pmc_soc },
3889 { .compatible = "nvidia,tegra132-pmc", .data = &tegra124_pmc_soc },
3890 { .compatible = "nvidia,tegra124-pmc", .data = &tegra124_pmc_soc },
3891 { .compatible = "nvidia,tegra114-pmc", .data = &tegra114_pmc_soc },
3892 { .compatible = "nvidia,tegra30-pmc", .data = &tegra30_pmc_soc },
3893 { .compatible = "nvidia,tegra20-pmc", .data = &tegra20_pmc_soc },
3897 static void tegra_pmc_sync_state(struct device *dev)
3902 * Newer device-trees have power domains, but we need to prepare all
3903 * device drivers with runtime PM and OPP support first, otherwise
3904 * state syncing is unsafe.
3906 if (!pmc->soc->supports_core_domain)
3910 * Older device-trees don't have core PD, and thus, there are
3911 * no dependencies that will block the state syncing. We shouldn't
3912 * mark the domain as synced in this case.
3914 if (!pmc->core_domain_registered)
3917 pmc->core_domain_state_synced = true;
3919 /* this is a no-op if core regulator isn't used */
3920 mutex_lock(&pmc->powergates_lock);
3921 err = dev_pm_opp_sync_regulators(dev);
3922 mutex_unlock(&pmc->powergates_lock);
3925 dev_err(dev, "failed to sync regulators: %d\n", err);
3928 static struct platform_driver tegra_pmc_driver = {
3930 .name = "tegra-pmc",
3931 .suppress_bind_attrs = true,
3932 .of_match_table = tegra_pmc_match,
3933 #if defined(CONFIG_PM_SLEEP) && defined(CONFIG_ARM)
3934 .pm = &tegra_pmc_pm_ops,
3936 .sync_state = tegra_pmc_sync_state,
3938 .probe = tegra_pmc_probe,
3940 builtin_platform_driver(tegra_pmc_driver);
3942 static bool __init tegra_pmc_detect_tz_only(struct tegra_pmc *pmc)
3946 saved = readl(pmc->base + pmc->soc->regs->scratch0);
3947 value = saved ^ 0xffffffff;
3949 if (value == 0xffffffff)
3952 /* write pattern and read it back */
3953 writel(value, pmc->base + pmc->soc->regs->scratch0);
3954 value = readl(pmc->base + pmc->soc->regs->scratch0);
3956 /* if we read all-zeroes, access is restricted to TZ only */
3958 pr_info("access to PMC is restricted to TZ\n");
3962 /* restore original value */
3963 writel(saved, pmc->base + pmc->soc->regs->scratch0);
3969 * Early initialization to allow access to registers in the very early boot
3972 static int __init tegra_pmc_early_init(void)
3974 const struct of_device_id *match;
3975 struct device_node *np;
3976 struct resource regs;
3980 mutex_init(&pmc->powergates_lock);
3982 np = of_find_matching_node_and_match(NULL, tegra_pmc_match, &match);
3985 * Fall back to legacy initialization for 32-bit ARM only. All
3986 * 64-bit ARM device tree files for Tegra are required to have
3989 * This is for backwards-compatibility with old device trees
3990 * that didn't contain a PMC node. Note that in this case the
3991 * SoC data can't be matched and therefore powergating is
3994 if (IS_ENABLED(CONFIG_ARM) && soc_is_tegra()) {
3995 pr_warn("DT node not found, powergating disabled\n");
3997 regs.start = 0x7000e400;
3998 regs.end = 0x7000e7ff;
3999 regs.flags = IORESOURCE_MEM;
4001 pr_warn("Using memory region %pR\n", ®s);
4004 * At this point we're not running on Tegra, so play
4005 * nice with multi-platform kernels.
4011 * Extract information from the device tree if we've found a
4014 if (of_address_to_resource(np, 0, ®s) < 0) {
4015 pr_err("failed to get PMC registers\n");
4021 pmc->base = ioremap(regs.start, resource_size(®s));
4023 pr_err("failed to map PMC registers\n");
4029 pmc->soc = match->data;
4031 if (pmc->soc->maybe_tz_only)
4032 pmc->tz_only = tegra_pmc_detect_tz_only(pmc);
4034 /* Create a bitmap of the available and valid partitions */
4035 for (i = 0; i < pmc->soc->num_powergates; i++)
4036 if (pmc->soc->powergates[i])
4037 set_bit(i, pmc->powergates_available);
4040 * Invert the interrupt polarity if a PMC device tree node
4041 * exists and contains the nvidia,invert-interrupt property.
4043 invert = of_property_read_bool(np, "nvidia,invert-interrupt");
4045 pmc->soc->setup_irq_polarity(pmc, np, invert);
4052 early_initcall(tegra_pmc_early_init);