GNU Linux-libre 6.8.9-gnu
[releases.git] / drivers / clk / renesas / r9a07g043-cpg.c
1 // SPDX-License-Identifier: GPL-2.0
2 /*
3  * RZ/G2UL CPG driver
4  *
5  * Copyright (C) 2022 Renesas Electronics Corp.
6  */
7
8 #include <linux/clk-provider.h>
9 #include <linux/device.h>
10 #include <linux/init.h>
11 #include <linux/kernel.h>
12
13 #include <dt-bindings/clock/r9a07g043-cpg.h>
14
15 #include "rzg2l-cpg.h"
16
17 /* Specific registers. */
18 #define CPG_PL2SDHI_DSEL        (0x218)
19
20 /* Clock select configuration. */
21 #define SEL_SDHI0               SEL_PLL_PACK(CPG_PL2SDHI_DSEL, 0, 2)
22 #define SEL_SDHI1               SEL_PLL_PACK(CPG_PL2SDHI_DSEL, 4, 2)
23
24 /* Clock status configuration. */
25 #define SEL_SDHI0_STS           SEL_PLL_PACK(CPG_CLKSTATUS, 28, 1)
26 #define SEL_SDHI1_STS           SEL_PLL_PACK(CPG_CLKSTATUS, 29, 1)
27
28 enum clk_ids {
29         /* Core Clock Outputs exported to DT */
30         LAST_DT_CORE_CLK = R9A07G043_CLK_P0_DIV2,
31
32         /* External Input Clocks */
33         CLK_EXTAL,
34
35         /* Internal Core Clocks */
36         CLK_OSC_DIV1000,
37         CLK_PLL1,
38         CLK_PLL2,
39         CLK_PLL2_DIV2,
40         CLK_PLL2_DIV2_8,
41         CLK_PLL2_DIV2_10,
42         CLK_PLL3,
43         CLK_PLL3_400,
44         CLK_PLL3_533,
45         CLK_PLL3_DIV2,
46         CLK_PLL3_DIV2_4,
47         CLK_PLL3_DIV2_4_2,
48         CLK_SEL_PLL3_3,
49         CLK_DIV_PLL3_C,
50 #ifdef CONFIG_ARM64
51         CLK_PLL5,
52         CLK_PLL5_500,
53         CLK_PLL5_250,
54 #endif
55         CLK_PLL6,
56         CLK_PLL6_250,
57         CLK_P1_DIV2,
58         CLK_PLL2_800,
59         CLK_PLL2_SDHI_533,
60         CLK_PLL2_SDHI_400,
61         CLK_PLL2_SDHI_266,
62         CLK_SD0_DIV4,
63         CLK_SD1_DIV4,
64
65         /* Module Clocks */
66         MOD_CLK_BASE,
67 };
68
69 /* Divider tables */
70 static const struct clk_div_table dtable_1_8[] = {
71         {0, 1},
72         {1, 2},
73         {2, 4},
74         {3, 8},
75         {0, 0},
76 };
77
78 static const struct clk_div_table dtable_1_32[] = {
79         {0, 1},
80         {1, 2},
81         {2, 4},
82         {3, 8},
83         {4, 32},
84         {0, 0},
85 };
86
87 /* Mux clock tables */
88 static const char * const sel_pll3_3[] = { ".pll3_533", ".pll3_400" };
89 static const char * const sel_pll6_2[]  = { ".pll6_250", ".pll5_250" };
90 static const char * const sel_shdi[] = { ".clk_533", ".clk_400", ".clk_266" };
91
92 static const u32 mtable_sdhi[] = { 1, 2, 3 };
93
94 static const struct cpg_core_clk r9a07g043_core_clks[] __initconst = {
95         /* External Clock Inputs */
96         DEF_INPUT("extal", CLK_EXTAL),
97
98         /* Internal Core Clocks */
99         DEF_FIXED(".osc", R9A07G043_OSCCLK, CLK_EXTAL, 1, 1),
100         DEF_FIXED(".osc_div1000", CLK_OSC_DIV1000, CLK_EXTAL, 1, 1000),
101         DEF_SAMPLL(".pll1", CLK_PLL1, CLK_EXTAL, PLL146_CONF(0)),
102         DEF_FIXED(".pll2", CLK_PLL2, CLK_EXTAL, 200, 3),
103         DEF_FIXED(".pll2_div2", CLK_PLL2_DIV2, CLK_PLL2, 1, 2),
104         DEF_FIXED(".clk_800", CLK_PLL2_800, CLK_PLL2, 1, 2),
105         DEF_FIXED(".clk_533", CLK_PLL2_SDHI_533, CLK_PLL2, 1, 3),
106         DEF_FIXED(".clk_400", CLK_PLL2_SDHI_400, CLK_PLL2_800, 1, 2),
107         DEF_FIXED(".clk_266", CLK_PLL2_SDHI_266, CLK_PLL2_SDHI_533, 1, 2),
108         DEF_FIXED(".pll2_div2_8", CLK_PLL2_DIV2_8, CLK_PLL2_DIV2, 1, 8),
109         DEF_FIXED(".pll2_div2_10", CLK_PLL2_DIV2_10, CLK_PLL2_DIV2, 1, 10),
110         DEF_FIXED(".pll3", CLK_PLL3, CLK_EXTAL, 200, 3),
111         DEF_FIXED(".pll3_div2", CLK_PLL3_DIV2, CLK_PLL3, 1, 2),
112         DEF_FIXED(".pll3_div2_4", CLK_PLL3_DIV2_4, CLK_PLL3_DIV2, 1, 4),
113         DEF_FIXED(".pll3_div2_4_2", CLK_PLL3_DIV2_4_2, CLK_PLL3_DIV2_4, 1, 2),
114         DEF_FIXED(".pll3_400", CLK_PLL3_400, CLK_PLL3, 1, 4),
115         DEF_FIXED(".pll3_533", CLK_PLL3_533, CLK_PLL3, 1, 3),
116         DEF_MUX_RO(".sel_pll3_3", CLK_SEL_PLL3_3, SEL_PLL3_3, sel_pll3_3),
117         DEF_DIV("divpl3c", CLK_DIV_PLL3_C, CLK_SEL_PLL3_3, DIVPL3C, dtable_1_32),
118 #ifdef CONFIG_ARM64
119         DEF_FIXED(".pll5", CLK_PLL5, CLK_EXTAL, 125, 1),
120         DEF_FIXED(".pll5_500", CLK_PLL5_500, CLK_PLL5, 1, 6),
121         DEF_FIXED(".pll5_250", CLK_PLL5_250, CLK_PLL5_500, 1, 2),
122 #endif
123         DEF_FIXED(".pll6", CLK_PLL6, CLK_EXTAL, 125, 6),
124         DEF_FIXED(".pll6_250", CLK_PLL6_250, CLK_PLL6, 1, 2),
125
126         /* Core output clk */
127         DEF_DIV("I", R9A07G043_CLK_I, CLK_PLL1, DIVPL1A, dtable_1_8),
128         DEF_DIV("P0", R9A07G043_CLK_P0, CLK_PLL2_DIV2_8, DIVPL2A, dtable_1_32),
129         DEF_FIXED("P0_DIV2", R9A07G043_CLK_P0_DIV2, R9A07G043_CLK_P0, 1, 2),
130         DEF_FIXED("TSU", R9A07G043_CLK_TSU, CLK_PLL2_DIV2_10, 1, 1),
131         DEF_DIV("P1", R9A07G043_CLK_P1, CLK_PLL3_DIV2_4, DIVPL3B, dtable_1_32),
132         DEF_FIXED("P1_DIV2", CLK_P1_DIV2, R9A07G043_CLK_P1, 1, 2),
133         DEF_DIV("P2", R9A07G043_CLK_P2, CLK_PLL3_DIV2_4_2, DIVPL3A, dtable_1_32),
134         DEF_FIXED("M0", R9A07G043_CLK_M0, CLK_PLL3_DIV2_4, 1, 1),
135         DEF_FIXED("ZT", R9A07G043_CLK_ZT, CLK_PLL3_DIV2_4_2, 1, 1),
136         DEF_MUX("HP", R9A07G043_CLK_HP, SEL_PLL6_2, sel_pll6_2),
137         DEF_FIXED("SPI0", R9A07G043_CLK_SPI0, CLK_DIV_PLL3_C, 1, 2),
138         DEF_FIXED("SPI1", R9A07G043_CLK_SPI1, CLK_DIV_PLL3_C, 1, 4),
139         DEF_SD_MUX("SD0", R9A07G043_CLK_SD0, SEL_SDHI0, SEL_SDHI0_STS, sel_shdi,
140                    mtable_sdhi, 0, rzg2l_cpg_sd_clk_mux_notifier),
141         DEF_SD_MUX("SD1", R9A07G043_CLK_SD1, SEL_SDHI1, SEL_SDHI1_STS, sel_shdi,
142                    mtable_sdhi, 0, rzg2l_cpg_sd_clk_mux_notifier),
143         DEF_FIXED("SD0_DIV4", CLK_SD0_DIV4, R9A07G043_CLK_SD0, 1, 4),
144         DEF_FIXED("SD1_DIV4", CLK_SD1_DIV4, R9A07G043_CLK_SD1, 1, 4),
145 };
146
147 static struct rzg2l_mod_clk r9a07g043_mod_clks[] = {
148 #ifdef CONFIG_ARM64
149         DEF_MOD("gic",          R9A07G043_GIC600_GICCLK, R9A07G043_CLK_P1,
150                                 0x514, 0),
151         DEF_MOD("ia55_pclk",    R9A07G043_IA55_PCLK, R9A07G043_CLK_P2,
152                                 0x518, 0),
153         DEF_MOD("ia55_clk",     R9A07G043_IA55_CLK, R9A07G043_CLK_P1,
154                                 0x518, 1),
155 #endif
156 #ifdef CONFIG_RISCV
157         DEF_MOD("iax45_pclk",   R9A07G043_IAX45_PCLK, R9A07G043_CLK_P2,
158                                 0x518, 0),
159         DEF_MOD("iax45_clk",    R9A07G043_IAX45_CLK, R9A07G043_CLK_P1,
160                                 0x518, 1),
161 #endif
162         DEF_MOD("dmac_aclk",    R9A07G043_DMAC_ACLK, R9A07G043_CLK_P1,
163                                 0x52c, 0),
164         DEF_MOD("dmac_pclk",    R9A07G043_DMAC_PCLK, CLK_P1_DIV2,
165                                 0x52c, 1),
166         DEF_MOD("ostm0_pclk",   R9A07G043_OSTM0_PCLK, R9A07G043_CLK_P0,
167                                 0x534, 0),
168         DEF_MOD("ostm1_pclk",   R9A07G043_OSTM1_PCLK, R9A07G043_CLK_P0,
169                                 0x534, 1),
170         DEF_MOD("ostm2_pclk",   R9A07G043_OSTM2_PCLK, R9A07G043_CLK_P0,
171                                 0x534, 2),
172         DEF_MOD("mtu_x_mck",    R9A07G043_MTU_X_MCK_MTU3, R9A07G043_CLK_P0,
173                                 0x538, 0),
174         DEF_MOD("wdt0_pclk",    R9A07G043_WDT0_PCLK, R9A07G043_CLK_P0,
175                                 0x548, 0),
176         DEF_MOD("wdt0_clk",     R9A07G043_WDT0_CLK, R9A07G043_OSCCLK,
177                                 0x548, 1),
178         DEF_MOD("spi_clk2",     R9A07G043_SPI_CLK2, R9A07G043_CLK_SPI1,
179                                 0x550, 0),
180         DEF_MOD("spi_clk",      R9A07G043_SPI_CLK, R9A07G043_CLK_SPI0,
181                                 0x550, 1),
182         DEF_MOD("sdhi0_imclk",  R9A07G043_SDHI0_IMCLK, CLK_SD0_DIV4,
183                                 0x554, 0),
184         DEF_MOD("sdhi0_imclk2", R9A07G043_SDHI0_IMCLK2, CLK_SD0_DIV4,
185                                 0x554, 1),
186         DEF_MOD("sdhi0_clk_hs", R9A07G043_SDHI0_CLK_HS, R9A07G043_CLK_SD0,
187                                 0x554, 2),
188         DEF_MOD("sdhi0_aclk",   R9A07G043_SDHI0_ACLK, R9A07G043_CLK_P1,
189                                 0x554, 3),
190         DEF_MOD("sdhi1_imclk",  R9A07G043_SDHI1_IMCLK, CLK_SD1_DIV4,
191                                 0x554, 4),
192         DEF_MOD("sdhi1_imclk2", R9A07G043_SDHI1_IMCLK2, CLK_SD1_DIV4,
193                                 0x554, 5),
194         DEF_MOD("sdhi1_clk_hs", R9A07G043_SDHI1_CLK_HS, R9A07G043_CLK_SD1,
195                                 0x554, 6),
196         DEF_MOD("sdhi1_aclk",   R9A07G043_SDHI1_ACLK, R9A07G043_CLK_P1,
197                                 0x554, 7),
198         DEF_MOD("ssi0_pclk",    R9A07G043_SSI0_PCLK2, R9A07G043_CLK_P0,
199                                 0x570, 0),
200         DEF_MOD("ssi0_sfr",     R9A07G043_SSI0_PCLK_SFR, R9A07G043_CLK_P0,
201                                 0x570, 1),
202         DEF_MOD("ssi1_pclk",    R9A07G043_SSI1_PCLK2, R9A07G043_CLK_P0,
203                                 0x570, 2),
204         DEF_MOD("ssi1_sfr",     R9A07G043_SSI1_PCLK_SFR, R9A07G043_CLK_P0,
205                                 0x570, 3),
206         DEF_MOD("ssi2_pclk",    R9A07G043_SSI2_PCLK2, R9A07G043_CLK_P0,
207                                 0x570, 4),
208         DEF_MOD("ssi2_sfr",     R9A07G043_SSI2_PCLK_SFR, R9A07G043_CLK_P0,
209                                 0x570, 5),
210         DEF_MOD("ssi3_pclk",    R9A07G043_SSI3_PCLK2, R9A07G043_CLK_P0,
211                                 0x570, 6),
212         DEF_MOD("ssi3_sfr",     R9A07G043_SSI3_PCLK_SFR, R9A07G043_CLK_P0,
213                                 0x570, 7),
214         DEF_MOD("usb0_host",    R9A07G043_USB_U2H0_HCLK, R9A07G043_CLK_P1,
215                                 0x578, 0),
216         DEF_MOD("usb1_host",    R9A07G043_USB_U2H1_HCLK, R9A07G043_CLK_P1,
217                                 0x578, 1),
218         DEF_MOD("usb0_func",    R9A07G043_USB_U2P_EXR_CPUCLK, R9A07G043_CLK_P1,
219                                 0x578, 2),
220         DEF_MOD("usb_pclk",     R9A07G043_USB_PCLK, R9A07G043_CLK_P1,
221                                 0x578, 3),
222         DEF_COUPLED("eth0_axi", R9A07G043_ETH0_CLK_AXI, R9A07G043_CLK_M0,
223                                 0x57c, 0),
224         DEF_COUPLED("eth0_chi", R9A07G043_ETH0_CLK_CHI, R9A07G043_CLK_ZT,
225                                 0x57c, 0),
226         DEF_COUPLED("eth1_axi", R9A07G043_ETH1_CLK_AXI, R9A07G043_CLK_M0,
227                                 0x57c, 1),
228         DEF_COUPLED("eth1_chi", R9A07G043_ETH1_CLK_CHI, R9A07G043_CLK_ZT,
229                                 0x57c, 1),
230         DEF_MOD("i2c0",         R9A07G043_I2C0_PCLK, R9A07G043_CLK_P0,
231                                 0x580, 0),
232         DEF_MOD("i2c1",         R9A07G043_I2C1_PCLK, R9A07G043_CLK_P0,
233                                 0x580, 1),
234         DEF_MOD("i2c2",         R9A07G043_I2C2_PCLK, R9A07G043_CLK_P0,
235                                 0x580, 2),
236         DEF_MOD("i2c3",         R9A07G043_I2C3_PCLK, R9A07G043_CLK_P0,
237                                 0x580, 3),
238         DEF_MOD("scif0",        R9A07G043_SCIF0_CLK_PCK, R9A07G043_CLK_P0,
239                                 0x584, 0),
240         DEF_MOD("scif1",        R9A07G043_SCIF1_CLK_PCK, R9A07G043_CLK_P0,
241                                 0x584, 1),
242         DEF_MOD("scif2",        R9A07G043_SCIF2_CLK_PCK, R9A07G043_CLK_P0,
243                                 0x584, 2),
244         DEF_MOD("scif3",        R9A07G043_SCIF3_CLK_PCK, R9A07G043_CLK_P0,
245                                 0x584, 3),
246         DEF_MOD("scif4",        R9A07G043_SCIF4_CLK_PCK, R9A07G043_CLK_P0,
247                                 0x584, 4),
248         DEF_MOD("sci0",         R9A07G043_SCI0_CLKP, R9A07G043_CLK_P0,
249                                 0x588, 0),
250         DEF_MOD("sci1",         R9A07G043_SCI1_CLKP, R9A07G043_CLK_P0,
251                                 0x588, 1),
252         DEF_MOD("rspi0",        R9A07G043_RSPI0_CLKB, R9A07G043_CLK_P0,
253                                 0x590, 0),
254         DEF_MOD("rspi1",        R9A07G043_RSPI1_CLKB, R9A07G043_CLK_P0,
255                                 0x590, 1),
256         DEF_MOD("rspi2",        R9A07G043_RSPI2_CLKB, R9A07G043_CLK_P0,
257                                 0x590, 2),
258         DEF_MOD("canfd",        R9A07G043_CANFD_PCLK, R9A07G043_CLK_P0,
259                                 0x594, 0),
260         DEF_MOD("gpio",         R9A07G043_GPIO_HCLK, R9A07G043_OSCCLK,
261                                 0x598, 0),
262         DEF_MOD("adc_adclk",    R9A07G043_ADC_ADCLK, R9A07G043_CLK_TSU,
263                                 0x5a8, 0),
264         DEF_MOD("adc_pclk",     R9A07G043_ADC_PCLK, R9A07G043_CLK_P0,
265                                 0x5a8, 1),
266         DEF_MOD("tsu_pclk",     R9A07G043_TSU_PCLK, R9A07G043_CLK_TSU,
267                                 0x5ac, 0),
268 };
269
270 static struct rzg2l_reset r9a07g043_resets[] = {
271 #ifdef CONFIG_ARM64
272         DEF_RST(R9A07G043_GIC600_GICRESET_N, 0x814, 0),
273         DEF_RST(R9A07G043_GIC600_DBG_GICRESET_N, 0x814, 1),
274         DEF_RST(R9A07G043_IA55_RESETN, 0x818, 0),
275 #endif
276 #ifdef CONFIG_RISCV
277         DEF_RST(R9A07G043_IAX45_RESETN, 0x818, 0),
278 #endif
279         DEF_RST(R9A07G043_DMAC_ARESETN, 0x82c, 0),
280         DEF_RST(R9A07G043_DMAC_RST_ASYNC, 0x82c, 1),
281         DEF_RST(R9A07G043_OSTM0_PRESETZ, 0x834, 0),
282         DEF_RST(R9A07G043_OSTM1_PRESETZ, 0x834, 1),
283         DEF_RST(R9A07G043_OSTM2_PRESETZ, 0x834, 2),
284         DEF_RST(R9A07G043_MTU_X_PRESET_MTU3, 0x838, 0),
285         DEF_RST(R9A07G043_WDT0_PRESETN, 0x848, 0),
286         DEF_RST(R9A07G043_SPI_RST, 0x850, 0),
287         DEF_RST(R9A07G043_SDHI0_IXRST, 0x854, 0),
288         DEF_RST(R9A07G043_SDHI1_IXRST, 0x854, 1),
289         DEF_RST(R9A07G043_SSI0_RST_M2_REG, 0x870, 0),
290         DEF_RST(R9A07G043_SSI1_RST_M2_REG, 0x870, 1),
291         DEF_RST(R9A07G043_SSI2_RST_M2_REG, 0x870, 2),
292         DEF_RST(R9A07G043_SSI3_RST_M2_REG, 0x870, 3),
293         DEF_RST(R9A07G043_USB_U2H0_HRESETN, 0x878, 0),
294         DEF_RST(R9A07G043_USB_U2H1_HRESETN, 0x878, 1),
295         DEF_RST(R9A07G043_USB_U2P_EXL_SYSRST, 0x878, 2),
296         DEF_RST(R9A07G043_USB_PRESETN, 0x878, 3),
297         DEF_RST(R9A07G043_ETH0_RST_HW_N, 0x87c, 0),
298         DEF_RST(R9A07G043_ETH1_RST_HW_N, 0x87c, 1),
299         DEF_RST(R9A07G043_I2C0_MRST, 0x880, 0),
300         DEF_RST(R9A07G043_I2C1_MRST, 0x880, 1),
301         DEF_RST(R9A07G043_I2C2_MRST, 0x880, 2),
302         DEF_RST(R9A07G043_I2C3_MRST, 0x880, 3),
303         DEF_RST(R9A07G043_SCIF0_RST_SYSTEM_N, 0x884, 0),
304         DEF_RST(R9A07G043_SCIF1_RST_SYSTEM_N, 0x884, 1),
305         DEF_RST(R9A07G043_SCIF2_RST_SYSTEM_N, 0x884, 2),
306         DEF_RST(R9A07G043_SCIF3_RST_SYSTEM_N, 0x884, 3),
307         DEF_RST(R9A07G043_SCIF4_RST_SYSTEM_N, 0x884, 4),
308         DEF_RST(R9A07G043_SCI0_RST, 0x888, 0),
309         DEF_RST(R9A07G043_SCI1_RST, 0x888, 1),
310         DEF_RST(R9A07G043_RSPI0_RST, 0x890, 0),
311         DEF_RST(R9A07G043_RSPI1_RST, 0x890, 1),
312         DEF_RST(R9A07G043_RSPI2_RST, 0x890, 2),
313         DEF_RST(R9A07G043_CANFD_RSTP_N, 0x894, 0),
314         DEF_RST(R9A07G043_CANFD_RSTC_N, 0x894, 1),
315         DEF_RST(R9A07G043_GPIO_RSTN, 0x898, 0),
316         DEF_RST(R9A07G043_GPIO_PORT_RESETN, 0x898, 1),
317         DEF_RST(R9A07G043_GPIO_SPARE_RESETN, 0x898, 2),
318         DEF_RST(R9A07G043_ADC_PRESETN, 0x8a8, 0),
319         DEF_RST(R9A07G043_ADC_ADRST_N, 0x8a8, 1),
320         DEF_RST(R9A07G043_TSU_PRESETN, 0x8ac, 0),
321 };
322
323 static const unsigned int r9a07g043_crit_mod_clks[] __initconst = {
324 #ifdef CONFIG_ARM64
325         MOD_CLK_BASE + R9A07G043_GIC600_GICCLK,
326         MOD_CLK_BASE + R9A07G043_IA55_CLK,
327 #endif
328 #ifdef CONFIG_RISCV
329         MOD_CLK_BASE + R9A07G043_IAX45_CLK,
330 #endif
331         MOD_CLK_BASE + R9A07G043_DMAC_ACLK,
332 };
333
334 const struct rzg2l_cpg_info r9a07g043_cpg_info = {
335         /* Core Clocks */
336         .core_clks = r9a07g043_core_clks,
337         .num_core_clks = ARRAY_SIZE(r9a07g043_core_clks),
338         .last_dt_core_clk = LAST_DT_CORE_CLK,
339         .num_total_core_clks = MOD_CLK_BASE,
340
341         /* Critical Module Clocks */
342         .crit_mod_clks = r9a07g043_crit_mod_clks,
343         .num_crit_mod_clks = ARRAY_SIZE(r9a07g043_crit_mod_clks),
344
345         /* Module Clocks */
346         .mod_clks = r9a07g043_mod_clks,
347         .num_mod_clks = ARRAY_SIZE(r9a07g043_mod_clks),
348 #ifdef CONFIG_ARM64
349         .num_hw_mod_clks = R9A07G043_TSU_PCLK + 1,
350 #endif
351 #ifdef CONFIG_RISCV
352         .num_hw_mod_clks = R9A07G043_IAX45_PCLK + 1,
353 #endif
354
355         /* Resets */
356         .resets = r9a07g043_resets,
357 #ifdef CONFIG_ARM64
358         .num_resets = R9A07G043_TSU_PRESETN + 1, /* Last reset ID + 1 */
359 #endif
360 #ifdef CONFIG_RISCV
361         .num_resets = R9A07G043_IAX45_RESETN + 1, /* Last reset ID + 1 */
362 #endif
363
364         .has_clk_mon_regs = true,
365 };