1// SPDX-License-Identifier: GPL-2.0
2/*
3 * r8a7791 Clock Pulse Generator / Module Standby and Software Reset
4 *
5 * Copyright (C) 2015-2017 Glider bvba
6 *
7 * Based on clk-rcar-gen2.c
8 *
9 * Copyright (C) 2013 Ideas On Board SPRL
10 */
11
12#include <linux/device.h>
13#include <linux/init.h>
14#include <linux/kernel.h>
15#include <linux/of.h>
16#include <linux/soc/renesas/rcar-rst.h>
17
18#include <dt-bindings/clock/r8a7791-cpg-mssr.h>
19
20#include "renesas-cpg-mssr.h"
21#include "rcar-gen2-cpg.h"
22
23enum clk_ids {
24 /* Core Clock Outputs exported to DT */
25 LAST_DT_CORE_CLK = R8A7791_CLK_OSC,
26
27 /* External Input Clocks */
28 CLK_EXTAL,
29 CLK_USB_EXTAL,
30
31 /* Internal Core Clocks */
32 CLK_MAIN,
33 CLK_PLL0,
34 CLK_PLL1,
35 CLK_PLL3,
36 CLK_PLL1_DIV2,
37
38 /* Module Clocks */
39 MOD_CLK_BASE
40};
41
42static struct cpg_core_clk r8a7791_core_clks[] __initdata = {
43 /* External Clock Inputs */
44 DEF_INPUT("extal", CLK_EXTAL),
45 DEF_INPUT("usb_extal", CLK_USB_EXTAL),
46
47 /* Internal Core Clocks */
48 DEF_BASE(".main", CLK_MAIN, CLK_TYPE_GEN2_MAIN, CLK_EXTAL),
49 DEF_BASE(".pll0", CLK_PLL0, CLK_TYPE_GEN2_PLL0, CLK_MAIN),
50 DEF_BASE(".pll1", CLK_PLL1, CLK_TYPE_GEN2_PLL1, CLK_MAIN),
51 DEF_BASE(".pll3", CLK_PLL3, CLK_TYPE_GEN2_PLL3, CLK_MAIN),
52
53 DEF_FIXED(".pll1_div2", CLK_PLL1_DIV2, CLK_PLL1, 2, 1),
54
55 /* Core Clock Outputs */
56 DEF_BASE("z", R8A7791_CLK_Z, CLK_TYPE_GEN2_Z, CLK_PLL0),
57 DEF_BASE("adsp", R8A7791_CLK_ADSP, CLK_TYPE_GEN2_ADSP, CLK_PLL1),
58 DEF_BASE("sdh", R8A7791_CLK_SDH, CLK_TYPE_GEN2_SDH, CLK_PLL1),
59 DEF_BASE("sd0", R8A7791_CLK_SD0, CLK_TYPE_GEN2_SD0, CLK_PLL1),
60 DEF_BASE("qspi", R8A7791_CLK_QSPI, CLK_TYPE_GEN2_QSPI, CLK_PLL1_DIV2),
61 DEF_BASE("rcan", R8A7791_CLK_RCAN, CLK_TYPE_GEN2_RCAN, CLK_USB_EXTAL),
62
63 DEF_FIXED("zg", R8A7791_CLK_ZG, CLK_PLL1, 3, 1),
64 DEF_FIXED("zx", R8A7791_CLK_ZX, CLK_PLL1, 3, 1),
65 DEF_FIXED("zs", R8A7791_CLK_ZS, CLK_PLL1, 6, 1),
66 DEF_FIXED("hp", R8A7791_CLK_HP, CLK_PLL1, 12, 1),
67 DEF_FIXED("i", R8A7791_CLK_I, CLK_PLL1, 2, 1),
68 DEF_FIXED("b", R8A7791_CLK_B, CLK_PLL1, 12, 1),
69 DEF_FIXED("lb", R8A7791_CLK_LB, CLK_PLL1, 24, 1),
70 DEF_FIXED("p", R8A7791_CLK_P, CLK_PLL1, 24, 1),
71 DEF_FIXED("cl", R8A7791_CLK_CL, CLK_PLL1, 48, 1),
72 DEF_FIXED("m2", R8A7791_CLK_M2, CLK_PLL1, 8, 1),
73 DEF_FIXED("zb3", R8A7791_CLK_ZB3, CLK_PLL3, 4, 1),
74 DEF_FIXED("zb3d2", R8A7791_CLK_ZB3D2, CLK_PLL3, 8, 1),
75 DEF_FIXED("ddr", R8A7791_CLK_DDR, CLK_PLL3, 8, 1),
76 DEF_FIXED("mp", R8A7791_CLK_MP, CLK_PLL1_DIV2, 15, 1),
77 DEF_FIXED("cp", R8A7791_CLK_CP, CLK_EXTAL, 2, 1),
78 DEF_FIXED("r", R8A7791_CLK_R, CLK_PLL1, 49152, 1),
79 DEF_FIXED("osc", R8A7791_CLK_OSC, CLK_PLL1, 12288, 1),
80
81 DEF_DIV6P1("sd2", R8A7791_CLK_SD2, CLK_PLL1_DIV2, 0x078),
82 DEF_DIV6P1("sd3", R8A7791_CLK_SD3, CLK_PLL1_DIV2, 0x26c),
83 DEF_DIV6P1("mmc0", R8A7791_CLK_MMC0, CLK_PLL1_DIV2, 0x240),
84 DEF_DIV6P1("ssp", R8A7791_CLK_SSP, CLK_PLL1_DIV2, 0x248),
85 DEF_DIV6P1("ssprs", R8A7791_CLK_SSPRS, CLK_PLL1_DIV2, 0x24c),
86};
87
88static const struct mssr_mod_clk r8a7791_mod_clks[] __initconst = {
89 DEF_MOD("msiof0", 0, R8A7791_CLK_MP),
90 DEF_MOD("vcp0", 101, R8A7791_CLK_ZS),
91 DEF_MOD("vpc0", 103, R8A7791_CLK_ZS),
92 DEF_MOD("jpu", 106, R8A7791_CLK_M2),
93 DEF_MOD("ssp1", 109, R8A7791_CLK_ZS),
94 DEF_MOD("tmu1", 111, R8A7791_CLK_P),
95 DEF_MOD("3dg", 112, R8A7791_CLK_ZG),
96 DEF_MOD("2d-dmac", 115, R8A7791_CLK_ZS),
97 DEF_MOD("fdp1-1", 118, R8A7791_CLK_ZS),
98 DEF_MOD("fdp1-0", 119, R8A7791_CLK_ZS),
99 DEF_MOD("tmu3", 121, R8A7791_CLK_P),
100 DEF_MOD("tmu2", 122, R8A7791_CLK_P),
101 DEF_MOD("cmt0", 124, R8A7791_CLK_R),
102 DEF_MOD("tmu0", 125, R8A7791_CLK_CP),
103 DEF_MOD("vsp1du1", 127, R8A7791_CLK_ZS),
104 DEF_MOD("vsp1du0", 128, R8A7791_CLK_ZS),
105 DEF_MOD("vsps", 131, R8A7791_CLK_ZS),
106 DEF_MOD("scifa2", 202, R8A7791_CLK_MP),
107 DEF_MOD("scifa1", 203, R8A7791_CLK_MP),
108 DEF_MOD("scifa0", 204, R8A7791_CLK_MP),
109 DEF_MOD("msiof2", 205, R8A7791_CLK_MP),
110 DEF_MOD("scifb0", 206, R8A7791_CLK_MP),
111 DEF_MOD("scifb1", 207, R8A7791_CLK_MP),
112 DEF_MOD("msiof1", 208, R8A7791_CLK_MP),
113 DEF_MOD("scifb2", 216, R8A7791_CLK_MP),
114 DEF_MOD("sys-dmac1", 218, R8A7791_CLK_ZS),
115 DEF_MOD("sys-dmac0", 219, R8A7791_CLK_ZS),
116 DEF_MOD("tpu0", 304, R8A7791_CLK_CP),
117 DEF_MOD("sdhi3", 311, R8A7791_CLK_SD3),
118 DEF_MOD("sdhi2", 312, R8A7791_CLK_SD2),
119 DEF_MOD("sdhi0", 314, R8A7791_CLK_SD0),
120 DEF_MOD("mmcif0", 315, R8A7791_CLK_MMC0),
121 DEF_MOD("iic0", 318, R8A7791_CLK_HP),
122 DEF_MOD("pciec", 319, R8A7791_CLK_MP),
123 DEF_MOD("iic1", 323, R8A7791_CLK_HP),
124 DEF_MOD("usb3.0", 328, R8A7791_CLK_MP),
125 DEF_MOD("cmt1", 329, R8A7791_CLK_R),
126 DEF_MOD("usbhs-dmac0", 330, R8A7791_CLK_HP),
127 DEF_MOD("usbhs-dmac1", 331, R8A7791_CLK_HP),
128 DEF_MOD("rwdt", 402, R8A7791_CLK_R),
129 DEF_MOD("irqc", 407, R8A7791_CLK_CP),
130 DEF_MOD("intc-sys", 408, R8A7791_CLK_ZS),
131 DEF_MOD("audio-dmac1", 501, R8A7791_CLK_HP),
132 DEF_MOD("audio-dmac0", 502, R8A7791_CLK_HP),
133 DEF_MOD("adsp_mod", 506, R8A7791_CLK_ADSP),
134 DEF_MOD("thermal", 522, CLK_EXTAL),
135 DEF_MOD("pwm", 523, R8A7791_CLK_P),
136 DEF_MOD("usb-ehci", 703, R8A7791_CLK_MP),
137 DEF_MOD("usbhs", 704, R8A7791_CLK_HP),
138 DEF_MOD("hscif2", 713, R8A7791_CLK_ZS),
139 DEF_MOD("scif5", 714, R8A7791_CLK_P),
140 DEF_MOD("scif4", 715, R8A7791_CLK_P),
141 DEF_MOD("hscif1", 716, R8A7791_CLK_ZS),
142 DEF_MOD("hscif0", 717, R8A7791_CLK_ZS),
143 DEF_MOD("scif3", 718, R8A7791_CLK_P),
144 DEF_MOD("scif2", 719, R8A7791_CLK_P),
145 DEF_MOD("scif1", 720, R8A7791_CLK_P),
146 DEF_MOD("scif0", 721, R8A7791_CLK_P),
147 DEF_MOD("du1", 723, R8A7791_CLK_ZX),
148 DEF_MOD("du0", 724, R8A7791_CLK_ZX),
149 DEF_MOD("lvds0", 726, R8A7791_CLK_ZX),
150 DEF_MOD("ipmmu-sgx", 800, R8A7791_CLK_ZX),
151 DEF_MOD("mlb", 802, R8A7791_CLK_HP),
152 DEF_MOD("vin2", 809, R8A7791_CLK_ZG),
153 DEF_MOD("vin1", 810, R8A7791_CLK_ZG),
154 DEF_MOD("vin0", 811, R8A7791_CLK_ZG),
155 DEF_MOD("etheravb", 812, R8A7791_CLK_HP),
156 DEF_MOD("ether", 813, R8A7791_CLK_P),
157 DEF_MOD("sata1", 814, R8A7791_CLK_ZS),
158 DEF_MOD("sata0", 815, R8A7791_CLK_ZS),
159 DEF_MOD("gyro-adc", 901, R8A7791_CLK_P),
160 DEF_MOD("gpio7", 904, R8A7791_CLK_CP),
161 DEF_MOD("gpio6", 905, R8A7791_CLK_CP),
162 DEF_MOD("gpio5", 907, R8A7791_CLK_CP),
163 DEF_MOD("gpio4", 908, R8A7791_CLK_CP),
164 DEF_MOD("gpio3", 909, R8A7791_CLK_CP),
165 DEF_MOD("gpio2", 910, R8A7791_CLK_CP),
166 DEF_MOD("gpio1", 911, R8A7791_CLK_CP),
167 DEF_MOD("gpio0", 912, R8A7791_CLK_CP),
168 DEF_MOD("can1", 915, R8A7791_CLK_P),
169 DEF_MOD("can0", 916, R8A7791_CLK_P),
170 DEF_MOD("qspi_mod", 917, R8A7791_CLK_QSPI),
171 DEF_MOD("i2c5", 925, R8A7791_CLK_HP),
172 DEF_MOD("iicdvfs", 926, R8A7791_CLK_CP),
173 DEF_MOD("i2c4", 927, R8A7791_CLK_HP),
174 DEF_MOD("i2c3", 928, R8A7791_CLK_HP),
175 DEF_MOD("i2c2", 929, R8A7791_CLK_HP),
176 DEF_MOD("i2c1", 930, R8A7791_CLK_HP),
177 DEF_MOD("i2c0", 931, R8A7791_CLK_HP),
178 DEF_MOD("ssi-all", 1005, R8A7791_CLK_P),
179 DEF_MOD("ssi9", 1006, MOD_CLK_ID(1005)),
180 DEF_MOD("ssi8", 1007, MOD_CLK_ID(1005)),
181 DEF_MOD("ssi7", 1008, MOD_CLK_ID(1005)),
182 DEF_MOD("ssi6", 1009, MOD_CLK_ID(1005)),
183 DEF_MOD("ssi5", 1010, MOD_CLK_ID(1005)),
184 DEF_MOD("ssi4", 1011, MOD_CLK_ID(1005)),
185 DEF_MOD("ssi3", 1012, MOD_CLK_ID(1005)),
186 DEF_MOD("ssi2", 1013, MOD_CLK_ID(1005)),
187 DEF_MOD("ssi1", 1014, MOD_CLK_ID(1005)),
188 DEF_MOD("ssi0", 1015, MOD_CLK_ID(1005)),
189 DEF_MOD("scu-all", 1017, R8A7791_CLK_P),
190 DEF_MOD("scu-dvc1", 1018, MOD_CLK_ID(1017)),
191 DEF_MOD("scu-dvc0", 1019, MOD_CLK_ID(1017)),
192 DEF_MOD("scu-ctu1-mix1", 1020, MOD_CLK_ID(1017)),
193 DEF_MOD("scu-ctu0-mix0", 1021, MOD_CLK_ID(1017)),
194 DEF_MOD("scu-src9", 1022, MOD_CLK_ID(1017)),
195 DEF_MOD("scu-src8", 1023, MOD_CLK_ID(1017)),
196 DEF_MOD("scu-src7", 1024, MOD_CLK_ID(1017)),
197 DEF_MOD("scu-src6", 1025, MOD_CLK_ID(1017)),
198 DEF_MOD("scu-src5", 1026, MOD_CLK_ID(1017)),
199 DEF_MOD("scu-src4", 1027, MOD_CLK_ID(1017)),
200 DEF_MOD("scu-src3", 1028, MOD_CLK_ID(1017)),
201 DEF_MOD("scu-src2", 1029, MOD_CLK_ID(1017)),
202 DEF_MOD("scu-src1", 1030, MOD_CLK_ID(1017)),
203 DEF_MOD("scu-src0", 1031, MOD_CLK_ID(1017)),
204 DEF_MOD("scifa3", 1106, R8A7791_CLK_MP),
205 DEF_MOD("scifa4", 1107, R8A7791_CLK_MP),
206 DEF_MOD("scifa5", 1108, R8A7791_CLK_MP),
207};
208
209static const unsigned int r8a7791_crit_mod_clks[] __initconst = {
210 MOD_CLK_ID(402), /* RWDT */
211 MOD_CLK_ID(408), /* INTC-SYS (GIC) */
212};
213
214/*
215 * CPG Clock Data
216 */
217
218/*
219 * MD EXTAL PLL0 PLL1 PLL3
220 * 14 13 19 (MHz) *1 *1
221 *---------------------------------------------------
222 * 0 0 0 15 x172/2 x208/2 x106
223 * 0 0 1 15 x172/2 x208/2 x88
224 * 0 1 0 20 x130/2 x156/2 x80
225 * 0 1 1 20 x130/2 x156/2 x66
226 * 1 0 0 26 / 2 x200/2 x240/2 x122
227 * 1 0 1 26 / 2 x200/2 x240/2 x102
228 * 1 1 0 30 / 2 x172/2 x208/2 x106
229 * 1 1 1 30 / 2 x172/2 x208/2 x88
230 *
231 * *1 : Table 7.5a indicates VCO output (PLLx = VCO/2)
232 */
233#define CPG_PLL_CONFIG_INDEX(md) ((((md) & BIT(14)) >> 12) | \
234 (((md) & BIT(13)) >> 12) | \
235 (((md) & BIT(19)) >> 19))
236static const struct rcar_gen2_cpg_pll_config cpg_pll_configs[8] __initconst = {
237 { 1, 208, 106 }, { 1, 208, 88 }, { 1, 156, 80 }, { 1, 156, 66 },
238 { 2, 240, 122 }, { 2, 240, 102 }, { 2, 208, 106 }, { 2, 208, 88 },
239};
240
241static int __init r8a7791_cpg_mssr_init(struct device *dev)
242{
243 const struct rcar_gen2_cpg_pll_config *cpg_pll_config;
244 struct device_node *np = dev->of_node;
245 unsigned int i;
246 u32 cpg_mode;
247 int error;
248
249 error = rcar_rst_read_mode_pins(mode: &cpg_mode);
250 if (error)
251 return error;
252
253 cpg_pll_config = &cpg_pll_configs[CPG_PLL_CONFIG_INDEX(cpg_mode)];
254
255 if (of_device_is_compatible(device: np, "renesas,r8a7793-cpg-mssr")) {
256 /* R-Car M2-N uses a 1/5 divider for ZG */
257 for (i = 0; i < ARRAY_SIZE(r8a7791_core_clks); i++)
258 if (r8a7791_core_clks[i].id == R8A7791_CLK_ZG) {
259 r8a7791_core_clks[i].div = 5;
260 break;
261 }
262 }
263 return rcar_gen2_cpg_init(config: cpg_pll_config, pll0_div: 2, mode: cpg_mode);
264}
265
266const struct cpg_mssr_info r8a7791_cpg_mssr_info __initconst = {
267 /* Core Clocks */
268 .core_clks = r8a7791_core_clks,
269 .num_core_clks = ARRAY_SIZE(r8a7791_core_clks),
270 .last_dt_core_clk = LAST_DT_CORE_CLK,
271 .num_total_core_clks = MOD_CLK_BASE,
272
273 /* Module Clocks */
274 .mod_clks = r8a7791_mod_clks,
275 .num_mod_clks = ARRAY_SIZE(r8a7791_mod_clks),
276 .num_hw_mod_clks = 12 * 32,
277
278 /* Critical Module Clocks */
279 .crit_mod_clks = r8a7791_crit_mod_clks,
280 .num_crit_mod_clks = ARRAY_SIZE(r8a7791_crit_mod_clks),
281
282 /* Callbacks */
283 .init = r8a7791_cpg_mssr_init,
284 .cpg_clk_register = rcar_gen2_cpg_clk_register,
285};
286

source code of linux/drivers/clk/renesas/r8a7791-cpg-mssr.c