1 // SPDX-License-Identifier: GPL-2.0
3 * Copyright (c) 2018 Rockchip Electronics Co. Ltd.
5 * Author: Wyon Bi <bivvy.bi@rock-chips.com>
8 #include <linux/bits.h>
9 #include <linux/kernel.h>
10 #include <linux/clk.h>
11 #include <linux/iopoll.h>
12 #include <linux/clk-provider.h>
13 #include <linux/delay.h>
14 #include <linux/init.h>
15 #include <linux/mfd/syscon.h>
16 #include <linux/module.h>
17 #include <linux/of_device.h>
18 #include <linux/platform_device.h>
19 #include <linux/pm_runtime.h>
20 #include <linux/reset.h>
21 #include <linux/time64.h>
23 #include <linux/phy/phy.h>
24 #include <linux/phy/phy-mipi-dphy.h>
26 #define UPDATE(x, h, l) (((x) << (l)) & GENMASK((h), (l)))
29 * The offset address[7:0] is distributed two parts, one from the bit7 to bit5
30 * is the first address, the other from the bit4 to bit0 is the second address.
31 * when you configure the registers, you must set both of them. The Clock Lane
32 * and Data Lane use the same registers with the same second address, but the
33 * first address is different.
35 #define FIRST_ADDRESS(x) (((x) & 0x7) << 5)
36 #define SECOND_ADDRESS(x) (((x) & 0x1f) << 0)
37 #define PHY_REG(first, second) (FIRST_ADDRESS(first) | \
38 SECOND_ADDRESS(second))
40 /* Analog Register Part: reg00 */
41 #define BANDGAP_POWER_MASK BIT(7)
42 #define BANDGAP_POWER_DOWN BIT(7)
43 #define BANDGAP_POWER_ON 0
44 #define LANE_EN_MASK GENMASK(6, 2)
45 #define LANE_EN_CK BIT(6)
46 #define LANE_EN_3 BIT(5)
47 #define LANE_EN_2 BIT(4)
48 #define LANE_EN_1 BIT(3)
49 #define LANE_EN_0 BIT(2)
50 #define POWER_WORK_MASK GENMASK(1, 0)
51 #define POWER_WORK_ENABLE UPDATE(1, 1, 0)
52 #define POWER_WORK_DISABLE UPDATE(2, 1, 0)
53 /* Analog Register Part: reg01 */
54 #define REG_SYNCRST_MASK BIT(2)
55 #define REG_SYNCRST_RESET BIT(2)
56 #define REG_SYNCRST_NORMAL 0
57 #define REG_LDOPD_MASK BIT(1)
58 #define REG_LDOPD_POWER_DOWN BIT(1)
59 #define REG_LDOPD_POWER_ON 0
60 #define REG_PLLPD_MASK BIT(0)
61 #define REG_PLLPD_POWER_DOWN BIT(0)
62 #define REG_PLLPD_POWER_ON 0
63 /* Analog Register Part: reg03 */
64 #define REG_FBDIV_HI_MASK BIT(5)
65 #define REG_FBDIV_HI(x) UPDATE((x >> 8), 5, 5)
66 #define REG_PREDIV_MASK GENMASK(4, 0)
67 #define REG_PREDIV(x) UPDATE(x, 4, 0)
68 /* Analog Register Part: reg04 */
69 #define REG_FBDIV_LO_MASK GENMASK(7, 0)
70 #define REG_FBDIV_LO(x) UPDATE(x, 7, 0)
71 /* Analog Register Part: reg05 */
72 #define SAMPLE_CLOCK_PHASE_MASK GENMASK(6, 4)
73 #define SAMPLE_CLOCK_PHASE(x) UPDATE(x, 6, 4)
74 #define CLOCK_LANE_SKEW_PHASE_MASK GENMASK(2, 0)
75 #define CLOCK_LANE_SKEW_PHASE(x) UPDATE(x, 2, 0)
76 /* Analog Register Part: reg06 */
77 #define DATA_LANE_3_SKEW_PHASE_MASK GENMASK(6, 4)
78 #define DATA_LANE_3_SKEW_PHASE(x) UPDATE(x, 6, 4)
79 #define DATA_LANE_2_SKEW_PHASE_MASK GENMASK(2, 0)
80 #define DATA_LANE_2_SKEW_PHASE(x) UPDATE(x, 2, 0)
81 /* Analog Register Part: reg07 */
82 #define DATA_LANE_1_SKEW_PHASE_MASK GENMASK(6, 4)
83 #define DATA_LANE_1_SKEW_PHASE(x) UPDATE(x, 6, 4)
84 #define DATA_LANE_0_SKEW_PHASE_MASK GENMASK(2, 0)
85 #define DATA_LANE_0_SKEW_PHASE(x) UPDATE(x, 2, 0)
86 /* Analog Register Part: reg08 */
87 #define SAMPLE_CLOCK_DIRECTION_MASK BIT(4)
88 #define SAMPLE_CLOCK_DIRECTION_REVERSE BIT(4)
89 #define SAMPLE_CLOCK_DIRECTION_FORWARD 0
90 /* Digital Register Part: reg00 */
91 #define REG_DIG_RSTN_MASK BIT(0)
92 #define REG_DIG_RSTN_NORMAL BIT(0)
93 #define REG_DIG_RSTN_RESET 0
94 /* Digital Register Part: reg01 */
95 #define INVERT_TXCLKESC_MASK BIT(1)
96 #define INVERT_TXCLKESC_ENABLE BIT(1)
97 #define INVERT_TXCLKESC_DISABLE 0
98 #define INVERT_TXBYTECLKHS_MASK BIT(0)
99 #define INVERT_TXBYTECLKHS_ENABLE BIT(0)
100 #define INVERT_TXBYTECLKHS_DISABLE 0
101 /* Clock/Data0/Data1/Data2/Data3 Lane Register Part: reg05 */
102 #define T_LPX_CNT_MASK GENMASK(5, 0)
103 #define T_LPX_CNT(x) UPDATE(x, 5, 0)
104 /* Clock/Data0/Data1/Data2/Data3 Lane Register Part: reg06 */
105 #define T_HS_PREPARE_CNT_MASK GENMASK(6, 0)
106 #define T_HS_PREPARE_CNT(x) UPDATE(x, 6, 0)
107 /* Clock/Data0/Data1/Data2/Data3 Lane Register Part: reg07 */
108 #define T_HS_ZERO_CNT_MASK GENMASK(5, 0)
109 #define T_HS_ZERO_CNT(x) UPDATE(x, 5, 0)
110 /* Clock/Data0/Data1/Data2/Data3 Lane Register Part: reg08 */
111 #define T_HS_TRAIL_CNT_MASK GENMASK(6, 0)
112 #define T_HS_TRAIL_CNT(x) UPDATE(x, 6, 0)
113 /* Clock/Data0/Data1/Data2/Data3 Lane Register Part: reg09 */
114 #define T_HS_EXIT_CNT_MASK GENMASK(4, 0)
115 #define T_HS_EXIT_CNT(x) UPDATE(x, 4, 0)
116 /* Clock/Data0/Data1/Data2/Data3 Lane Register Part: reg0a */
117 #define T_CLK_POST_CNT_MASK GENMASK(3, 0)
118 #define T_CLK_POST_CNT(x) UPDATE(x, 3, 0)
119 /* Clock/Data0/Data1/Data2/Data3 Lane Register Part: reg0c */
120 #define LPDT_TX_PPI_SYNC_MASK BIT(2)
121 #define LPDT_TX_PPI_SYNC_ENABLE BIT(2)
122 #define LPDT_TX_PPI_SYNC_DISABLE 0
123 #define T_WAKEUP_CNT_HI_MASK GENMASK(1, 0)
124 #define T_WAKEUP_CNT_HI(x) UPDATE(x, 1, 0)
125 /* Clock/Data0/Data1/Data2/Data3 Lane Register Part: reg0d */
126 #define T_WAKEUP_CNT_LO_MASK GENMASK(7, 0)
127 #define T_WAKEUP_CNT_LO(x) UPDATE(x, 7, 0)
128 /* Clock/Data0/Data1/Data2/Data3 Lane Register Part: reg0e */
129 #define T_CLK_PRE_CNT_MASK GENMASK(3, 0)
130 #define T_CLK_PRE_CNT(x) UPDATE(x, 3, 0)
131 /* Clock/Data0/Data1/Data2/Data3 Lane Register Part: reg10 */
132 #define T_TA_GO_CNT_MASK GENMASK(5, 0)
133 #define T_TA_GO_CNT(x) UPDATE(x, 5, 0)
134 /* Clock/Data0/Data1/Data2/Data3 Lane Register Part: reg11 */
135 #define T_TA_SURE_CNT_MASK GENMASK(5, 0)
136 #define T_TA_SURE_CNT(x) UPDATE(x, 5, 0)
137 /* Clock/Data0/Data1/Data2/Data3 Lane Register Part: reg12 */
138 #define T_TA_WAIT_CNT_MASK GENMASK(5, 0)
139 #define T_TA_WAIT_CNT(x) UPDATE(x, 5, 0)
140 /* LVDS Register Part: reg00 */
141 #define LVDS_DIGITAL_INTERNAL_RESET_MASK BIT(2)
142 #define LVDS_DIGITAL_INTERNAL_RESET_DISABLE BIT(2)
143 #define LVDS_DIGITAL_INTERNAL_RESET_ENABLE 0
144 /* LVDS Register Part: reg01 */
145 #define LVDS_DIGITAL_INTERNAL_ENABLE_MASK BIT(7)
146 #define LVDS_DIGITAL_INTERNAL_ENABLE BIT(7)
147 #define LVDS_DIGITAL_INTERNAL_DISABLE 0
148 /* LVDS Register Part: reg03 */
149 #define MODE_ENABLE_MASK GENMASK(2, 0)
150 #define TTL_MODE_ENABLE BIT(2)
151 #define LVDS_MODE_ENABLE BIT(1)
152 #define MIPI_MODE_ENABLE BIT(0)
153 /* LVDS Register Part: reg0b */
154 #define LVDS_LANE_EN_MASK GENMASK(7, 3)
155 #define LVDS_DATA_LANE0_EN BIT(7)
156 #define LVDS_DATA_LANE1_EN BIT(6)
157 #define LVDS_DATA_LANE2_EN BIT(5)
158 #define LVDS_DATA_LANE3_EN BIT(4)
159 #define LVDS_CLK_LANE_EN BIT(3)
160 #define LVDS_PLL_POWER_MASK BIT(2)
161 #define LVDS_PLL_POWER_OFF BIT(2)
162 #define LVDS_PLL_POWER_ON 0
163 #define LVDS_BANDGAP_POWER_MASK BIT(0)
164 #define LVDS_BANDGAP_POWER_DOWN BIT(0)
165 #define LVDS_BANDGAP_POWER_ON 0
167 #define DSI_PHY_RSTZ 0xa0
168 #define PHY_ENABLECLK BIT(2)
169 #define DSI_PHY_STATUS 0xb0
170 #define PHY_LOCK BIT(0)
172 struct inno_dsidphy {
175 struct clk *pclk_phy;
176 struct clk *pclk_host;
177 void __iomem *phy_base;
178 void __iomem *host_base;
179 struct reset_control *rst;
181 struct phy_configure_opts_mipi_dphy dphy_cfg;
193 REGISTER_PART_ANALOG,
194 REGISTER_PART_DIGITAL,
195 REGISTER_PART_CLOCK_LANE,
196 REGISTER_PART_DATA0_LANE,
197 REGISTER_PART_DATA1_LANE,
198 REGISTER_PART_DATA2_LANE,
199 REGISTER_PART_DATA3_LANE,
203 static inline struct inno_dsidphy *hw_to_inno(struct clk_hw *hw)
205 return container_of(hw, struct inno_dsidphy, pll.hw);
208 static void phy_update_bits(struct inno_dsidphy *inno,
209 u8 first, u8 second, u8 mask, u8 val)
211 u32 reg = PHY_REG(first, second) << 2;
212 unsigned int tmp, orig;
214 orig = readl(inno->phy_base + reg);
217 writel(tmp, inno->phy_base + reg);
220 static unsigned long inno_dsidphy_pll_calc_rate(struct inno_dsidphy *inno,
223 unsigned long prate = clk_get_rate(inno->ref_clk);
224 unsigned long best_freq = 0;
225 unsigned long fref, fout;
226 u8 min_prediv, max_prediv;
227 u8 _prediv, best_prediv = 1;
228 u16 _fbdiv, best_fbdiv = 1;
229 u32 min_delta = UINT_MAX;
232 * The PLL output frequency can be calculated using a simple formula:
233 * PLL_Output_Frequency = (FREF / PREDIV * FBDIV) / 2
234 * PLL_Output_Frequency: it is equal to DDR-Clock-Frequency * 2
237 if (rate > 1000000000UL)
242 /* 5Mhz < Fref / prediv < 40MHz */
243 min_prediv = DIV_ROUND_UP(fref, 40000000);
244 max_prediv = fref / 5000000;
246 for (_prediv = min_prediv; _prediv <= max_prediv; _prediv++) {
250 tmp = (u64)fout * _prediv;
255 * The possible settings of feedback divider are
256 * 12, 13, 14, 16, ~ 511
261 if (_fbdiv < 12 || _fbdiv > 511)
264 tmp = (u64)_fbdiv * fref;
265 do_div(tmp, _prediv);
267 delta = abs(fout - tmp);
269 best_prediv = _prediv;
273 } else if (delta < min_delta) {
274 best_prediv = _prediv;
282 inno->pll.prediv = best_prediv;
283 inno->pll.fbdiv = best_fbdiv;
284 inno->pll.rate = best_freq;
290 static void inno_dsidphy_mipi_mode_enable(struct inno_dsidphy *inno)
292 struct phy_configure_opts_mipi_dphy *cfg = &inno->dphy_cfg;
297 u8 data_lane_hs_zero;
300 { 110000000, 0x20, 0x16, 0x02, 0x22},
301 { 150000000, 0x06, 0x16, 0x03, 0x45},
302 { 200000000, 0x18, 0x17, 0x04, 0x0b},
303 { 250000000, 0x05, 0x17, 0x05, 0x16},
304 { 300000000, 0x51, 0x18, 0x06, 0x2c},
305 { 400000000, 0x64, 0x19, 0x07, 0x33},
306 { 500000000, 0x20, 0x1b, 0x07, 0x4e},
307 { 600000000, 0x6a, 0x1d, 0x08, 0x3a},
308 { 700000000, 0x3e, 0x1e, 0x08, 0x6a},
309 { 800000000, 0x21, 0x1f, 0x09, 0x29},
310 {1000000000, 0x09, 0x20, 0x09, 0x27},
312 u32 t_txbyteclkhs, t_txclkesc;
313 u32 txbyteclkhs, txclkesc, esc_clk_div;
314 u32 hs_exit, clk_post, clk_pre, wakeup, lpx, ta_go, ta_sure, ta_wait;
315 u32 hs_prepare, hs_trail, hs_zero, clk_lane_hs_zero, data_lane_hs_zero;
318 inno_dsidphy_pll_calc_rate(inno, cfg->hs_clk_rate);
320 /* Select MIPI mode */
321 phy_update_bits(inno, REGISTER_PART_LVDS, 0x03,
322 MODE_ENABLE_MASK, MIPI_MODE_ENABLE);
324 phy_update_bits(inno, REGISTER_PART_ANALOG, 0x03,
325 REG_PREDIV_MASK, REG_PREDIV(inno->pll.prediv));
326 phy_update_bits(inno, REGISTER_PART_ANALOG, 0x03,
327 REG_FBDIV_HI_MASK, REG_FBDIV_HI(inno->pll.fbdiv));
328 phy_update_bits(inno, REGISTER_PART_ANALOG, 0x04,
329 REG_FBDIV_LO_MASK, REG_FBDIV_LO(inno->pll.fbdiv));
330 /* Enable PLL and LDO */
331 phy_update_bits(inno, REGISTER_PART_ANALOG, 0x01,
332 REG_LDOPD_MASK | REG_PLLPD_MASK,
333 REG_LDOPD_POWER_ON | REG_PLLPD_POWER_ON);
335 phy_update_bits(inno, REGISTER_PART_ANALOG, 0x01,
336 REG_SYNCRST_MASK, REG_SYNCRST_RESET);
338 phy_update_bits(inno, REGISTER_PART_ANALOG, 0x01,
339 REG_SYNCRST_MASK, REG_SYNCRST_NORMAL);
341 phy_update_bits(inno, REGISTER_PART_DIGITAL, 0x00,
342 REG_DIG_RSTN_MASK, REG_DIG_RSTN_RESET);
344 phy_update_bits(inno, REGISTER_PART_DIGITAL, 0x00,
345 REG_DIG_RSTN_MASK, REG_DIG_RSTN_NORMAL);
347 txbyteclkhs = inno->pll.rate / 8;
348 t_txbyteclkhs = div_u64(PSEC_PER_SEC, txbyteclkhs);
350 esc_clk_div = DIV_ROUND_UP(txbyteclkhs, 20000000);
351 txclkesc = txbyteclkhs / esc_clk_div;
352 t_txclkesc = div_u64(PSEC_PER_SEC, txclkesc);
355 * The value of counter for HS Ths-exit
356 * Ths-exit = Tpin_txbyteclkhs * value
358 hs_exit = DIV_ROUND_UP(cfg->hs_exit, t_txbyteclkhs);
360 * The value of counter for HS Tclk-post
361 * Tclk-post = Tpin_txbyteclkhs * value
363 clk_post = DIV_ROUND_UP(cfg->clk_post, t_txbyteclkhs);
365 * The value of counter for HS Tclk-pre
366 * Tclk-pre = Tpin_txbyteclkhs * value
368 clk_pre = DIV_ROUND_UP(cfg->clk_pre, BITS_PER_BYTE);
371 * The value of counter for HS Tlpx Time
372 * Tlpx = Tpin_txbyteclkhs * (2 + value)
374 lpx = DIV_ROUND_UP(cfg->lpx, t_txbyteclkhs);
379 * The value of counter for HS Tta-go
380 * Tta-go for turnaround
381 * Tta-go = Ttxclkesc * value
383 ta_go = DIV_ROUND_UP(cfg->ta_go, t_txclkesc);
385 * The value of counter for HS Tta-sure
386 * Tta-sure for turnaround
387 * Tta-sure = Ttxclkesc * value
389 ta_sure = DIV_ROUND_UP(cfg->ta_sure, t_txclkesc);
391 * The value of counter for HS Tta-wait
392 * Tta-wait for turnaround
393 * Tta-wait = Ttxclkesc * value
395 ta_wait = DIV_ROUND_UP(cfg->ta_get, t_txclkesc);
397 for (i = 0; i < ARRAY_SIZE(timings); i++)
398 if (inno->pll.rate <= timings[i].rate)
401 if (i == ARRAY_SIZE(timings))
404 hs_prepare = timings[i].hs_prepare;
405 hs_trail = timings[i].hs_trail;
406 clk_lane_hs_zero = timings[i].clk_lane_hs_zero;
407 data_lane_hs_zero = timings[i].data_lane_hs_zero;
410 for (i = REGISTER_PART_CLOCK_LANE; i <= REGISTER_PART_DATA3_LANE; i++) {
411 if (i == REGISTER_PART_CLOCK_LANE)
412 hs_zero = clk_lane_hs_zero;
414 hs_zero = data_lane_hs_zero;
416 phy_update_bits(inno, i, 0x05, T_LPX_CNT_MASK,
418 phy_update_bits(inno, i, 0x06, T_HS_PREPARE_CNT_MASK,
419 T_HS_PREPARE_CNT(hs_prepare));
420 phy_update_bits(inno, i, 0x07, T_HS_ZERO_CNT_MASK,
421 T_HS_ZERO_CNT(hs_zero));
422 phy_update_bits(inno, i, 0x08, T_HS_TRAIL_CNT_MASK,
423 T_HS_TRAIL_CNT(hs_trail));
424 phy_update_bits(inno, i, 0x09, T_HS_EXIT_CNT_MASK,
425 T_HS_EXIT_CNT(hs_exit));
426 phy_update_bits(inno, i, 0x0a, T_CLK_POST_CNT_MASK,
427 T_CLK_POST_CNT(clk_post));
428 phy_update_bits(inno, i, 0x0e, T_CLK_PRE_CNT_MASK,
429 T_CLK_PRE_CNT(clk_pre));
430 phy_update_bits(inno, i, 0x0c, T_WAKEUP_CNT_HI_MASK,
431 T_WAKEUP_CNT_HI(wakeup >> 8));
432 phy_update_bits(inno, i, 0x0d, T_WAKEUP_CNT_LO_MASK,
433 T_WAKEUP_CNT_LO(wakeup));
434 phy_update_bits(inno, i, 0x10, T_TA_GO_CNT_MASK,
436 phy_update_bits(inno, i, 0x11, T_TA_SURE_CNT_MASK,
437 T_TA_SURE_CNT(ta_sure));
438 phy_update_bits(inno, i, 0x12, T_TA_WAIT_CNT_MASK,
439 T_TA_WAIT_CNT(ta_wait));
442 /* Enable all lanes on analog part */
443 phy_update_bits(inno, REGISTER_PART_ANALOG, 0x00,
444 LANE_EN_MASK, LANE_EN_CK | LANE_EN_3 | LANE_EN_2 |
445 LANE_EN_1 | LANE_EN_0);
448 static void inno_dsidphy_lvds_mode_enable(struct inno_dsidphy *inno)
453 /* Sample clock reverse direction */
454 phy_update_bits(inno, REGISTER_PART_ANALOG, 0x08,
455 SAMPLE_CLOCK_DIRECTION_MASK,
456 SAMPLE_CLOCK_DIRECTION_REVERSE);
458 /* Select LVDS mode */
459 phy_update_bits(inno, REGISTER_PART_LVDS, 0x03,
460 MODE_ENABLE_MASK, LVDS_MODE_ENABLE);
462 phy_update_bits(inno, REGISTER_PART_ANALOG, 0x03,
463 REG_PREDIV_MASK, REG_PREDIV(prediv));
464 phy_update_bits(inno, REGISTER_PART_ANALOG, 0x03,
465 REG_FBDIV_HI_MASK, REG_FBDIV_HI(fbdiv));
466 phy_update_bits(inno, REGISTER_PART_ANALOG, 0x04,
467 REG_FBDIV_LO_MASK, REG_FBDIV_LO(fbdiv));
468 phy_update_bits(inno, REGISTER_PART_LVDS, 0x08, 0xff, 0xfc);
469 /* Enable PLL and Bandgap */
470 phy_update_bits(inno, REGISTER_PART_LVDS, 0x0b,
471 LVDS_PLL_POWER_MASK | LVDS_BANDGAP_POWER_MASK,
472 LVDS_PLL_POWER_ON | LVDS_BANDGAP_POWER_ON);
476 /* Reset LVDS digital logic */
477 phy_update_bits(inno, REGISTER_PART_LVDS, 0x00,
478 LVDS_DIGITAL_INTERNAL_RESET_MASK,
479 LVDS_DIGITAL_INTERNAL_RESET_ENABLE);
481 phy_update_bits(inno, REGISTER_PART_LVDS, 0x00,
482 LVDS_DIGITAL_INTERNAL_RESET_MASK,
483 LVDS_DIGITAL_INTERNAL_RESET_DISABLE);
484 /* Enable LVDS digital logic */
485 phy_update_bits(inno, REGISTER_PART_LVDS, 0x01,
486 LVDS_DIGITAL_INTERNAL_ENABLE_MASK,
487 LVDS_DIGITAL_INTERNAL_ENABLE);
488 /* Enable LVDS analog driver */
489 phy_update_bits(inno, REGISTER_PART_LVDS, 0x0b,
490 LVDS_LANE_EN_MASK, LVDS_CLK_LANE_EN |
491 LVDS_DATA_LANE0_EN | LVDS_DATA_LANE1_EN |
492 LVDS_DATA_LANE2_EN | LVDS_DATA_LANE3_EN);
495 static int inno_dsidphy_power_on(struct phy *phy)
497 struct inno_dsidphy *inno = phy_get_drvdata(phy);
499 clk_prepare_enable(inno->pclk_phy);
500 clk_prepare_enable(inno->ref_clk);
501 pm_runtime_get_sync(inno->dev);
503 /* Bandgap power on */
504 phy_update_bits(inno, REGISTER_PART_ANALOG, 0x00,
505 BANDGAP_POWER_MASK, BANDGAP_POWER_ON);
506 /* Enable power work */
507 phy_update_bits(inno, REGISTER_PART_ANALOG, 0x00,
508 POWER_WORK_MASK, POWER_WORK_ENABLE);
510 switch (inno->mode) {
511 case PHY_MODE_MIPI_DPHY:
512 inno_dsidphy_mipi_mode_enable(inno);
515 inno_dsidphy_lvds_mode_enable(inno);
524 static int inno_dsidphy_power_off(struct phy *phy)
526 struct inno_dsidphy *inno = phy_get_drvdata(phy);
528 phy_update_bits(inno, REGISTER_PART_ANALOG, 0x00, LANE_EN_MASK, 0);
529 phy_update_bits(inno, REGISTER_PART_ANALOG, 0x01,
530 REG_LDOPD_MASK | REG_PLLPD_MASK,
531 REG_LDOPD_POWER_DOWN | REG_PLLPD_POWER_DOWN);
532 phy_update_bits(inno, REGISTER_PART_ANALOG, 0x00,
533 POWER_WORK_MASK, POWER_WORK_DISABLE);
534 phy_update_bits(inno, REGISTER_PART_ANALOG, 0x00,
535 BANDGAP_POWER_MASK, BANDGAP_POWER_DOWN);
537 phy_update_bits(inno, REGISTER_PART_LVDS, 0x0b, LVDS_LANE_EN_MASK, 0);
538 phy_update_bits(inno, REGISTER_PART_LVDS, 0x01,
539 LVDS_DIGITAL_INTERNAL_ENABLE_MASK,
540 LVDS_DIGITAL_INTERNAL_DISABLE);
541 phy_update_bits(inno, REGISTER_PART_LVDS, 0x0b,
542 LVDS_PLL_POWER_MASK | LVDS_BANDGAP_POWER_MASK,
543 LVDS_PLL_POWER_OFF | LVDS_BANDGAP_POWER_DOWN);
545 pm_runtime_put(inno->dev);
546 clk_disable_unprepare(inno->ref_clk);
547 clk_disable_unprepare(inno->pclk_phy);
552 static int inno_dsidphy_set_mode(struct phy *phy, enum phy_mode mode,
555 struct inno_dsidphy *inno = phy_get_drvdata(phy);
558 case PHY_MODE_MIPI_DPHY:
569 static int inno_dsidphy_configure(struct phy *phy,
570 union phy_configure_opts *opts)
572 struct inno_dsidphy *inno = phy_get_drvdata(phy);
575 if (inno->mode != PHY_MODE_MIPI_DPHY)
578 ret = phy_mipi_dphy_config_validate(&opts->mipi_dphy);
582 memcpy(&inno->dphy_cfg, &opts->mipi_dphy, sizeof(inno->dphy_cfg));
587 static const struct phy_ops inno_dsidphy_ops = {
588 .configure = inno_dsidphy_configure,
589 .set_mode = inno_dsidphy_set_mode,
590 .power_on = inno_dsidphy_power_on,
591 .power_off = inno_dsidphy_power_off,
592 .owner = THIS_MODULE,
595 static int inno_dsidphy_probe(struct platform_device *pdev)
597 struct device *dev = &pdev->dev;
598 struct inno_dsidphy *inno;
599 struct phy_provider *phy_provider;
603 inno = devm_kzalloc(dev, sizeof(*inno), GFP_KERNEL);
608 platform_set_drvdata(pdev, inno);
610 inno->phy_base = devm_platform_ioremap_resource(pdev, 0);
611 if (IS_ERR(inno->phy_base))
612 return PTR_ERR(inno->phy_base);
614 inno->ref_clk = devm_clk_get(dev, "ref");
615 if (IS_ERR(inno->ref_clk)) {
616 ret = PTR_ERR(inno->ref_clk);
617 dev_err(dev, "failed to get ref clock: %d\n", ret);
621 inno->pclk_phy = devm_clk_get(dev, "pclk");
622 if (IS_ERR(inno->pclk_phy)) {
623 ret = PTR_ERR(inno->pclk_phy);
624 dev_err(dev, "failed to get phy pclk: %d\n", ret);
628 inno->rst = devm_reset_control_get(dev, "apb");
629 if (IS_ERR(inno->rst)) {
630 ret = PTR_ERR(inno->rst);
631 dev_err(dev, "failed to get system reset control: %d\n", ret);
635 phy = devm_phy_create(dev, NULL, &inno_dsidphy_ops);
638 dev_err(dev, "failed to create phy: %d\n", ret);
642 phy_set_drvdata(phy, inno);
644 phy_provider = devm_of_phy_provider_register(dev, of_phy_simple_xlate);
645 if (IS_ERR(phy_provider)) {
646 ret = PTR_ERR(phy_provider);
647 dev_err(dev, "failed to register phy provider: %d\n", ret);
651 pm_runtime_enable(dev);
656 static int inno_dsidphy_remove(struct platform_device *pdev)
658 struct inno_dsidphy *inno = platform_get_drvdata(pdev);
660 pm_runtime_disable(inno->dev);
665 static const struct of_device_id inno_dsidphy_of_match[] = {
666 { .compatible = "rockchip,px30-dsi-dphy", },
667 { .compatible = "rockchip,rk3128-dsi-dphy", },
668 { .compatible = "rockchip,rk3368-dsi-dphy", },
671 MODULE_DEVICE_TABLE(of, inno_dsidphy_of_match);
673 static struct platform_driver inno_dsidphy_driver = {
675 .name = "inno-dsidphy",
676 .of_match_table = of_match_ptr(inno_dsidphy_of_match),
678 .probe = inno_dsidphy_probe,
679 .remove = inno_dsidphy_remove,
681 module_platform_driver(inno_dsidphy_driver);
683 MODULE_AUTHOR("Wyon Bi <bivvy.bi@rock-chips.com>");
684 MODULE_DESCRIPTION("Innosilicon MIPI/LVDS/TTL Video Combo PHY driver");
685 MODULE_LICENSE("GPL v2");