1// SPDX-License-Identifier: GPL-2.0
2/*
3 * r8a77980 Clock Pulse Generator / Module Standby and Software Reset
4 *
5 * Copyright (C) 2018 Renesas Electronics Corp.
6 * Copyright (C) 2018 Cogent Embedded, Inc.
7 *
8 * Based on r8a7795-cpg-mssr.c
9 *
10 * Copyright (C) 2015 Glider bvba
11 */
12
13#include <linux/device.h>
14#include <linux/init.h>
15#include <linux/kernel.h>
16#include <linux/soc/renesas/rcar-rst.h>
17#include <linux/sys_soc.h>
18
19#include <dt-bindings/clock/r8a77980-cpg-mssr.h>
20
21#include "renesas-cpg-mssr.h"
22#include "rcar-gen3-cpg.h"
23
24enum clk_ids {
25 /* Core Clock Outputs exported to DT */
26 LAST_DT_CORE_CLK = R8A77980_CLK_OSC,
27
28 /* External Input Clocks */
29 CLK_EXTAL,
30 CLK_EXTALR,
31
32 /* Internal Core Clocks */
33 CLK_MAIN,
34 CLK_PLL1,
35 CLK_PLL2,
36 CLK_PLL3,
37 CLK_PLL1_DIV2,
38 CLK_PLL1_DIV4,
39 CLK_S0,
40 CLK_S1,
41 CLK_S2,
42 CLK_S3,
43 CLK_SDSRC,
44 CLK_RPCSRC,
45 CLK_OCO,
46
47 /* Module Clocks */
48 MOD_CLK_BASE
49};
50
51static const struct cpg_core_clk r8a77980_core_clks[] __initconst = {
52 /* External Clock Inputs */
53 DEF_INPUT("extal", CLK_EXTAL),
54 DEF_INPUT("extalr", CLK_EXTALR),
55
56 /* Internal Core Clocks */
57 DEF_BASE(".main", CLK_MAIN, CLK_TYPE_GEN3_MAIN, CLK_EXTAL),
58 DEF_BASE(".pll1", CLK_PLL1, CLK_TYPE_GEN3_PLL1, CLK_MAIN),
59 DEF_BASE(".pll2", CLK_PLL2, CLK_TYPE_GEN3_PLL2, CLK_MAIN),
60 DEF_BASE(".pll3", CLK_PLL3, CLK_TYPE_GEN3_PLL3, CLK_MAIN),
61
62 DEF_FIXED(".pll1_div2", CLK_PLL1_DIV2, CLK_PLL1, 2, 1),
63 DEF_FIXED(".pll1_div4", CLK_PLL1_DIV4, CLK_PLL1_DIV2, 2, 1),
64 DEF_FIXED(".s0", CLK_S0, CLK_PLL1_DIV2, 2, 1),
65 DEF_FIXED(".s1", CLK_S1, CLK_PLL1_DIV2, 3, 1),
66 DEF_FIXED(".s2", CLK_S2, CLK_PLL1_DIV2, 4, 1),
67 DEF_FIXED(".s3", CLK_S3, CLK_PLL1_DIV2, 6, 1),
68 DEF_FIXED(".sdsrc", CLK_SDSRC, CLK_PLL1_DIV2, 2, 1),
69
70 DEF_BASE(".rpcsrc", CLK_RPCSRC, CLK_TYPE_GEN3_RPCSRC, CLK_PLL1),
71
72 DEF_RATE(".oco", CLK_OCO, 32768),
73
74 /* Core Clock Outputs */
75 DEF_FIXED("z2", R8A77980_CLK_Z2, CLK_PLL2, 4, 1),
76 DEF_FIXED("ztr", R8A77980_CLK_ZTR, CLK_PLL1_DIV2, 6, 1),
77 DEF_FIXED("ztrd2", R8A77980_CLK_ZTRD2, CLK_PLL1_DIV2, 12, 1),
78 DEF_FIXED("zt", R8A77980_CLK_ZT, CLK_PLL1_DIV2, 4, 1),
79 DEF_FIXED("zx", R8A77980_CLK_ZX, CLK_PLL1_DIV2, 2, 1),
80 DEF_FIXED("s0d1", R8A77980_CLK_S0D1, CLK_S0, 1, 1),
81 DEF_FIXED("s0d2", R8A77980_CLK_S0D2, CLK_S0, 2, 1),
82 DEF_FIXED("s0d3", R8A77980_CLK_S0D3, CLK_S0, 3, 1),
83 DEF_FIXED("s0d4", R8A77980_CLK_S0D4, CLK_S0, 4, 1),
84 DEF_FIXED("s0d6", R8A77980_CLK_S0D6, CLK_S0, 6, 1),
85 DEF_FIXED("s0d12", R8A77980_CLK_S0D12, CLK_S0, 12, 1),
86 DEF_FIXED("s0d24", R8A77980_CLK_S0D24, CLK_S0, 24, 1),
87 DEF_FIXED("s1d1", R8A77980_CLK_S1D1, CLK_S1, 1, 1),
88 DEF_FIXED("s1d2", R8A77980_CLK_S1D2, CLK_S1, 2, 1),
89 DEF_FIXED("s1d4", R8A77980_CLK_S1D4, CLK_S1, 4, 1),
90 DEF_FIXED("s2d1", R8A77980_CLK_S2D1, CLK_S2, 1, 1),
91 DEF_FIXED("s2d2", R8A77980_CLK_S2D2, CLK_S2, 2, 1),
92 DEF_FIXED("s2d4", R8A77980_CLK_S2D4, CLK_S2, 4, 1),
93 DEF_FIXED("s3d1", R8A77980_CLK_S3D1, CLK_S3, 1, 1),
94 DEF_FIXED("s3d2", R8A77980_CLK_S3D2, CLK_S3, 2, 1),
95 DEF_FIXED("s3d4", R8A77980_CLK_S3D4, CLK_S3, 4, 1),
96
97 DEF_GEN3_SDH("sd0h", R8A77980_CLK_SD0H, CLK_SDSRC, 0x0074),
98 DEF_GEN3_SD("sd0", R8A77980_CLK_SD0, R8A77980_CLK_SD0H, 0x0074),
99
100 DEF_BASE("rpc", R8A77980_CLK_RPC, CLK_TYPE_GEN3_RPC, CLK_RPCSRC),
101 DEF_BASE("rpcd2", R8A77980_CLK_RPCD2, CLK_TYPE_GEN3_RPCD2, R8A77980_CLK_RPC),
102
103 DEF_FIXED("cl", R8A77980_CLK_CL, CLK_PLL1_DIV2, 48, 1),
104 DEF_FIXED("cp", R8A77980_CLK_CP, CLK_EXTAL, 2, 1),
105 DEF_FIXED("cpex", R8A77980_CLK_CPEX, CLK_EXTAL, 2, 1),
106
107 DEF_DIV6P1("canfd", R8A77980_CLK_CANFD, CLK_PLL1_DIV4, 0x244),
108 DEF_DIV6P1("csi0", R8A77980_CLK_CSI0, CLK_PLL1_DIV4, 0x00c),
109 DEF_DIV6P1("mso", R8A77980_CLK_MSO, CLK_PLL1_DIV4, 0x014),
110
111 DEF_GEN3_OSC("osc", R8A77980_CLK_OSC, CLK_EXTAL, 8),
112 DEF_GEN3_MDSEL("r", R8A77980_CLK_R, 29, CLK_EXTALR, 1, CLK_OCO, 1),
113};
114
115static const struct mssr_mod_clk r8a77980_mod_clks[] __initconst = {
116 DEF_MOD("tmu4", 121, R8A77980_CLK_S0D6),
117 DEF_MOD("tmu3", 122, R8A77980_CLK_S0D6),
118 DEF_MOD("tmu2", 123, R8A77980_CLK_S0D6),
119 DEF_MOD("tmu1", 124, R8A77980_CLK_S0D6),
120 DEF_MOD("tmu0", 125, R8A77980_CLK_CP),
121 DEF_MOD("scif4", 203, R8A77980_CLK_S3D4),
122 DEF_MOD("scif3", 204, R8A77980_CLK_S3D4),
123 DEF_MOD("scif1", 206, R8A77980_CLK_S3D4),
124 DEF_MOD("scif0", 207, R8A77980_CLK_S3D4),
125 DEF_MOD("msiof3", 208, R8A77980_CLK_MSO),
126 DEF_MOD("msiof2", 209, R8A77980_CLK_MSO),
127 DEF_MOD("msiof1", 210, R8A77980_CLK_MSO),
128 DEF_MOD("msiof0", 211, R8A77980_CLK_MSO),
129 DEF_MOD("sys-dmac2", 217, R8A77980_CLK_S0D3),
130 DEF_MOD("sys-dmac1", 218, R8A77980_CLK_S0D3),
131 DEF_MOD("cmt3", 300, R8A77980_CLK_R),
132 DEF_MOD("cmt2", 301, R8A77980_CLK_R),
133 DEF_MOD("cmt1", 302, R8A77980_CLK_R),
134 DEF_MOD("cmt0", 303, R8A77980_CLK_R),
135 DEF_MOD("tpu0", 304, R8A77980_CLK_S3D4),
136 DEF_MOD("sdif", 314, R8A77980_CLK_SD0),
137 DEF_MOD("pciec0", 319, R8A77980_CLK_S2D2),
138 DEF_MOD("rwdt", 402, R8A77980_CLK_R),
139 DEF_MOD("intc-ex", 407, R8A77980_CLK_CP),
140 DEF_MOD("intc-ap", 408, R8A77980_CLK_S0D3),
141 DEF_MOD("hscif3", 517, R8A77980_CLK_S3D1),
142 DEF_MOD("hscif2", 518, R8A77980_CLK_S3D1),
143 DEF_MOD("hscif1", 519, R8A77980_CLK_S3D1),
144 DEF_MOD("hscif0", 520, R8A77980_CLK_S3D1),
145 DEF_MOD("imp4", 521, R8A77980_CLK_S1D1),
146 DEF_MOD("thermal", 522, R8A77980_CLK_CP),
147 DEF_MOD("pwm", 523, R8A77980_CLK_S0D12),
148 DEF_MOD("impdma1", 526, R8A77980_CLK_S1D1),
149 DEF_MOD("impdma0", 527, R8A77980_CLK_S1D1),
150 DEF_MOD("imp-ocv4", 528, R8A77980_CLK_S1D1),
151 DEF_MOD("imp-ocv3", 529, R8A77980_CLK_S1D1),
152 DEF_MOD("imp-ocv2", 531, R8A77980_CLK_S1D1),
153 DEF_MOD("fcpvd0", 603, R8A77980_CLK_S3D1),
154 DEF_MOD("vin15", 604, R8A77980_CLK_S2D1),
155 DEF_MOD("vin14", 605, R8A77980_CLK_S2D1),
156 DEF_MOD("vin13", 608, R8A77980_CLK_S2D1),
157 DEF_MOD("vin12", 612, R8A77980_CLK_S2D1),
158 DEF_MOD("vin11", 618, R8A77980_CLK_S2D1),
159 DEF_MOD("vspd0", 623, R8A77980_CLK_S3D1),
160 DEF_MOD("vin10", 625, R8A77980_CLK_S2D1),
161 DEF_MOD("vin9", 627, R8A77980_CLK_S2D1),
162 DEF_MOD("vin8", 628, R8A77980_CLK_S2D1),
163 DEF_MOD("csi41", 715, R8A77980_CLK_CSI0),
164 DEF_MOD("csi40", 716, R8A77980_CLK_CSI0),
165 DEF_MOD("du0", 724, R8A77980_CLK_S2D1),
166 DEF_MOD("lvds", 727, R8A77980_CLK_S2D1),
167 DEF_MOD("vin7", 804, R8A77980_CLK_S2D1),
168 DEF_MOD("vin6", 805, R8A77980_CLK_S2D1),
169 DEF_MOD("vin5", 806, R8A77980_CLK_S2D1),
170 DEF_MOD("vin4", 807, R8A77980_CLK_S2D1),
171 DEF_MOD("vin3", 808, R8A77980_CLK_S2D1),
172 DEF_MOD("vin2", 809, R8A77980_CLK_S2D1),
173 DEF_MOD("vin1", 810, R8A77980_CLK_S2D1),
174 DEF_MOD("vin0", 811, R8A77980_CLK_S2D1),
175 DEF_MOD("etheravb", 812, R8A77980_CLK_S3D2),
176 DEF_MOD("gether", 813, R8A77980_CLK_S3D2),
177 DEF_MOD("imp3", 824, R8A77980_CLK_S1D1),
178 DEF_MOD("imp2", 825, R8A77980_CLK_S1D1),
179 DEF_MOD("imp1", 826, R8A77980_CLK_S1D1),
180 DEF_MOD("imp0", 827, R8A77980_CLK_S1D1),
181 DEF_MOD("imp-ocv1", 828, R8A77980_CLK_S1D1),
182 DEF_MOD("imp-ocv0", 829, R8A77980_CLK_S1D1),
183 DEF_MOD("impram", 830, R8A77980_CLK_S1D1),
184 DEF_MOD("impcnn", 831, R8A77980_CLK_S1D1),
185 DEF_MOD("gpio5", 907, R8A77980_CLK_CP),
186 DEF_MOD("gpio4", 908, R8A77980_CLK_CP),
187 DEF_MOD("gpio3", 909, R8A77980_CLK_CP),
188 DEF_MOD("gpio2", 910, R8A77980_CLK_CP),
189 DEF_MOD("gpio1", 911, R8A77980_CLK_CP),
190 DEF_MOD("gpio0", 912, R8A77980_CLK_CP),
191 DEF_MOD("can-fd", 914, R8A77980_CLK_S3D2),
192 DEF_MOD("rpc-if", 917, R8A77980_CLK_RPCD2),
193 DEF_MOD("i2c5", 919, R8A77980_CLK_S0D6),
194 DEF_MOD("i2c4", 927, R8A77980_CLK_S0D6),
195 DEF_MOD("i2c3", 928, R8A77980_CLK_S0D6),
196 DEF_MOD("i2c2", 929, R8A77980_CLK_S3D2),
197 DEF_MOD("i2c1", 930, R8A77980_CLK_S3D2),
198 DEF_MOD("i2c0", 931, R8A77980_CLK_S3D2),
199};
200
201static const unsigned int r8a77980_crit_mod_clks[] __initconst = {
202 MOD_CLK_ID(402), /* RWDT */
203 MOD_CLK_ID(408), /* INTC-AP (GIC) */
204};
205
206/*
207 * CPG Clock Data
208 */
209
210/*
211 * MD EXTAL PLL2 PLL1 PLL3 OSC
212 * 14 13 (MHz)
213 * --------------------------------------------------------
214 * 0 0 16.66 x 1 x240 x192 x192 /16
215 * 0 1 20 x 1 x200 x160 x160 /19
216 * 1 0 27 x 1 x148 x118 x118 /26
217 * 1 1 33.33 / 2 x240 x192 x192 /32
218 */
219#define CPG_PLL_CONFIG_INDEX(md) ((((md) & BIT(14)) >> 13) | \
220 (((md) & BIT(13)) >> 13))
221
222static const struct rcar_gen3_cpg_pll_config cpg_pll_configs[4] __initconst = {
223 /* EXTAL div PLL1 mult/div PLL3 mult/div OSC prediv */
224 { 1, 192, 1, 192, 1, 16, },
225 { 1, 160, 1, 160, 1, 19, },
226 { 1, 118, 1, 118, 1, 26, },
227 { 2, 192, 1, 192, 1, 32, },
228};
229
230static int __init r8a77980_cpg_mssr_init(struct device *dev)
231{
232 const struct rcar_gen3_cpg_pll_config *cpg_pll_config;
233 u32 cpg_mode;
234 int error;
235
236 error = rcar_rst_read_mode_pins(mode: &cpg_mode);
237 if (error)
238 return error;
239
240 cpg_pll_config = &cpg_pll_configs[CPG_PLL_CONFIG_INDEX(cpg_mode)];
241
242 return rcar_gen3_cpg_init(config: cpg_pll_config, clk_extalr: CLK_EXTALR, mode: cpg_mode);
243}
244
245const struct cpg_mssr_info r8a77980_cpg_mssr_info __initconst = {
246 /* Core Clocks */
247 .core_clks = r8a77980_core_clks,
248 .num_core_clks = ARRAY_SIZE(r8a77980_core_clks),
249 .last_dt_core_clk = LAST_DT_CORE_CLK,
250 .num_total_core_clks = MOD_CLK_BASE,
251
252 /* Module Clocks */
253 .mod_clks = r8a77980_mod_clks,
254 .num_mod_clks = ARRAY_SIZE(r8a77980_mod_clks),
255 .num_hw_mod_clks = 12 * 32,
256
257 /* Critical Module Clocks */
258 .crit_mod_clks = r8a77980_crit_mod_clks,
259 .num_crit_mod_clks = ARRAY_SIZE(r8a77980_crit_mod_clks),
260
261 /* Callbacks */
262 .init = r8a77980_cpg_mssr_init,
263 .cpg_clk_register = rcar_gen3_cpg_clk_register,
264};
265

source code of linux/drivers/clk/renesas/r8a77980-cpg-mssr.c