1 // SPDX-License-Identifier: GPL-2.0
2 /*
3  * r8a774c0 Clock Pulse Generator / Module Standby and Software Reset
4  *
5  * Copyright (C) 2018 Renesas Electronics Corp.
6  *
7  * Based on r8a77990-cpg-mssr.c
8  *
9  * Copyright (C) 2015 Glider bvba
10  * Copyright (C) 2015 Renesas Electronics Corp.
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 
18 #include <dt-bindings/clock/r8a774c0-cpg-mssr.h>
19 
20 #include "renesas-cpg-mssr.h"
21 #include "rcar-gen3-cpg.h"
22 
23 enum clk_ids {
24 	/* Core Clock Outputs exported to DT */
25 	LAST_DT_CORE_CLK = R8A774C0_CLK_CANFD,
26 
27 	/* External Input Clocks */
28 	CLK_EXTAL,
29 
30 	/* Internal Core Clocks */
31 	CLK_MAIN,
32 	CLK_PLL0,
33 	CLK_PLL1,
34 	CLK_PLL3,
35 	CLK_PLL0D4,
36 	CLK_PLL0D6,
37 	CLK_PLL0D8,
38 	CLK_PLL0D20,
39 	CLK_PLL0D24,
40 	CLK_PLL1D2,
41 	CLK_PE,
42 	CLK_S0,
43 	CLK_S1,
44 	CLK_S2,
45 	CLK_S3,
46 	CLK_SDSRC,
47 	CLK_RPCSRC,
48 	CLK_RINT,
49 	CLK_OCO,
50 
51 	/* Module Clocks */
52 	MOD_CLK_BASE
53 };
54 
55 static const struct cpg_core_clk r8a774c0_core_clks[] __initconst = {
56 	/* External Clock Inputs */
57 	DEF_INPUT("extal",     CLK_EXTAL),
58 
59 	/* Internal Core Clocks */
60 	DEF_BASE(".main",      CLK_MAIN, CLK_TYPE_GEN3_MAIN,       CLK_EXTAL),
61 	DEF_BASE(".pll1",      CLK_PLL1, CLK_TYPE_GEN3_PLL1,       CLK_MAIN),
62 	DEF_BASE(".pll3",      CLK_PLL3, CLK_TYPE_GEN3_PLL3,       CLK_MAIN),
63 
64 	DEF_FIXED(".pll0",     CLK_PLL0,           CLK_MAIN,	   1, 100),
65 	DEF_FIXED(".pll0d4",   CLK_PLL0D4,         CLK_PLL0,       4, 1),
66 	DEF_FIXED(".pll0d6",   CLK_PLL0D6,         CLK_PLL0,       6, 1),
67 	DEF_FIXED(".pll0d8",   CLK_PLL0D8,         CLK_PLL0,       8, 1),
68 	DEF_FIXED(".pll0d20",  CLK_PLL0D20,        CLK_PLL0,      20, 1),
69 	DEF_FIXED(".pll0d24",  CLK_PLL0D24,        CLK_PLL0,      24, 1),
70 	DEF_FIXED(".pll1d2",   CLK_PLL1D2,         CLK_PLL1,       2, 1),
71 	DEF_FIXED(".pe",       CLK_PE,             CLK_PLL0D20,    1, 1),
72 	DEF_FIXED(".s0",       CLK_S0,             CLK_PLL1,       2, 1),
73 	DEF_FIXED(".s1",       CLK_S1,             CLK_PLL1,       3, 1),
74 	DEF_FIXED(".s2",       CLK_S2,             CLK_PLL1,       4, 1),
75 	DEF_FIXED(".s3",       CLK_S3,             CLK_PLL1,       6, 1),
76 	DEF_FIXED(".sdsrc",    CLK_SDSRC,          CLK_PLL1,       2, 1),
77 
78 	DEF_FIXED_RPCSRC_E3(".rpcsrc", CLK_RPCSRC, CLK_PLL0, CLK_PLL1),
79 
80 	DEF_BASE("rpc",		R8A774C0_CLK_RPC, CLK_TYPE_GEN3_RPC,
81 		 CLK_RPCSRC),
82 	DEF_BASE("rpcd2",	R8A774C0_CLK_RPCD2, CLK_TYPE_GEN3_RPCD2,
83 		 R8A774C0_CLK_RPC),
84 
85 	DEF_DIV6_RO(".r",      CLK_RINT,           CLK_EXTAL, CPG_RCKCR, 32),
86 
87 	DEF_RATE(".oco",       CLK_OCO,            8 * 1000 * 1000),
88 
89 	/* Core Clock Outputs */
90 	DEF_FIXED("za2",       R8A774C0_CLK_ZA2,   CLK_PLL0D24,    1, 1),
91 	DEF_FIXED("za8",       R8A774C0_CLK_ZA8,   CLK_PLL0D8,     1, 1),
92 	DEF_GEN3_Z("z2",       R8A774C0_CLK_Z2,    CLK_TYPE_GEN3_Z, CLK_PLL0, 4, 8),
93 	DEF_FIXED("ztr",       R8A774C0_CLK_ZTR,   CLK_PLL1,       6, 1),
94 	DEF_FIXED("zt",        R8A774C0_CLK_ZT,    CLK_PLL1,       4, 1),
95 	DEF_FIXED("zx",        R8A774C0_CLK_ZX,    CLK_PLL1,       3, 1),
96 	DEF_FIXED("s0d1",      R8A774C0_CLK_S0D1,  CLK_S0,         1, 1),
97 	DEF_FIXED("s0d3",      R8A774C0_CLK_S0D3,  CLK_S0,         3, 1),
98 	DEF_FIXED("s0d6",      R8A774C0_CLK_S0D6,  CLK_S0,         6, 1),
99 	DEF_FIXED("s0d12",     R8A774C0_CLK_S0D12, CLK_S0,        12, 1),
100 	DEF_FIXED("s0d24",     R8A774C0_CLK_S0D24, CLK_S0,        24, 1),
101 	DEF_FIXED("s1d1",      R8A774C0_CLK_S1D1,  CLK_S1,         1, 1),
102 	DEF_FIXED("s1d2",      R8A774C0_CLK_S1D2,  CLK_S1,         2, 1),
103 	DEF_FIXED("s1d4",      R8A774C0_CLK_S1D4,  CLK_S1,         4, 1),
104 	DEF_FIXED("s2d1",      R8A774C0_CLK_S2D1,  CLK_S2,         1, 1),
105 	DEF_FIXED("s2d2",      R8A774C0_CLK_S2D2,  CLK_S2,         2, 1),
106 	DEF_FIXED("s2d4",      R8A774C0_CLK_S2D4,  CLK_S2,         4, 1),
107 	DEF_FIXED("s3d1",      R8A774C0_CLK_S3D1,  CLK_S3,         1, 1),
108 	DEF_FIXED("s3d2",      R8A774C0_CLK_S3D2,  CLK_S3,         2, 1),
109 	DEF_FIXED("s3d4",      R8A774C0_CLK_S3D4,  CLK_S3,         4, 1),
110 
111 	DEF_GEN3_SD("sd0",     R8A774C0_CLK_SD0,   CLK_SDSRC,	  0x0074),
112 	DEF_GEN3_SD("sd1",     R8A774C0_CLK_SD1,   CLK_SDSRC,	  0x0078),
113 	DEF_GEN3_SD("sd3",     R8A774C0_CLK_SD3,   CLK_SDSRC,	  0x026c),
114 
115 	DEF_FIXED("cl",        R8A774C0_CLK_CL,    CLK_PLL1,      48, 1),
116 	DEF_FIXED("cp",        R8A774C0_CLK_CP,    CLK_EXTAL,      2, 1),
117 	DEF_FIXED("cpex",      R8A774C0_CLK_CPEX,  CLK_EXTAL,      4, 1),
118 
119 	DEF_DIV6_RO("osc",     R8A774C0_CLK_OSC,   CLK_EXTAL, CPG_RCKCR,  8),
120 
121 	DEF_GEN3_PE("s0d6c",   R8A774C0_CLK_S0D6C, CLK_S0, 6, CLK_PE, 2),
122 	DEF_GEN3_PE("s3d1c",   R8A774C0_CLK_S3D1C, CLK_S3, 1, CLK_PE, 1),
123 	DEF_GEN3_PE("s3d2c",   R8A774C0_CLK_S3D2C, CLK_S3, 2, CLK_PE, 2),
124 	DEF_GEN3_PE("s3d4c",   R8A774C0_CLK_S3D4C, CLK_S3, 4, CLK_PE, 4),
125 
126 	DEF_DIV6P1("canfd",    R8A774C0_CLK_CANFD, CLK_PLL0D6, 0x244),
127 	DEF_DIV6P1("csi0",     R8A774C0_CLK_CSI0,  CLK_PLL1D2, 0x00c),
128 	DEF_DIV6P1("mso",      R8A774C0_CLK_MSO,   CLK_PLL1D2, 0x014),
129 
130 	DEF_GEN3_RCKSEL("r",   R8A774C0_CLK_R, CLK_RINT, 1, CLK_OCO, 61 * 4),
131 };
132 
133 static const struct mssr_mod_clk r8a774c0_mod_clks[] __initconst = {
134 	DEF_MOD("tmu4",			 121,	R8A774C0_CLK_S0D6C),
135 	DEF_MOD("tmu3",			 122,	R8A774C0_CLK_S3D2C),
136 	DEF_MOD("tmu2",			 123,	R8A774C0_CLK_S3D2C),
137 	DEF_MOD("tmu1",			 124,	R8A774C0_CLK_S3D2C),
138 	DEF_MOD("tmu0",			 125,	R8A774C0_CLK_CP),
139 	DEF_MOD("scif5",		 202,	R8A774C0_CLK_S3D4C),
140 	DEF_MOD("scif4",		 203,	R8A774C0_CLK_S3D4C),
141 	DEF_MOD("scif3",		 204,	R8A774C0_CLK_S3D4C),
142 	DEF_MOD("scif1",		 206,	R8A774C0_CLK_S3D4C),
143 	DEF_MOD("scif0",		 207,	R8A774C0_CLK_S3D4C),
144 	DEF_MOD("msiof3",		 208,	R8A774C0_CLK_MSO),
145 	DEF_MOD("msiof2",		 209,	R8A774C0_CLK_MSO),
146 	DEF_MOD("msiof1",		 210,	R8A774C0_CLK_MSO),
147 	DEF_MOD("msiof0",		 211,	R8A774C0_CLK_MSO),
148 	DEF_MOD("sys-dmac2",		 217,	R8A774C0_CLK_S3D1),
149 	DEF_MOD("sys-dmac1",		 218,	R8A774C0_CLK_S3D1),
150 	DEF_MOD("sys-dmac0",		 219,	R8A774C0_CLK_S3D1),
151 
152 	DEF_MOD("cmt3",			 300,	R8A774C0_CLK_R),
153 	DEF_MOD("cmt2",			 301,	R8A774C0_CLK_R),
154 	DEF_MOD("cmt1",			 302,	R8A774C0_CLK_R),
155 	DEF_MOD("cmt0",			 303,	R8A774C0_CLK_R),
156 	DEF_MOD("scif2",		 310,	R8A774C0_CLK_S3D4C),
157 	DEF_MOD("sdif3",		 311,	R8A774C0_CLK_SD3),
158 	DEF_MOD("sdif1",		 313,	R8A774C0_CLK_SD1),
159 	DEF_MOD("sdif0",		 314,	R8A774C0_CLK_SD0),
160 	DEF_MOD("pcie0",		 319,	R8A774C0_CLK_S3D1),
161 	DEF_MOD("usb3-if0",		 328,	R8A774C0_CLK_S3D1),
162 	DEF_MOD("usb-dmac0",		 330,	R8A774C0_CLK_S3D1),
163 	DEF_MOD("usb-dmac1",		 331,	R8A774C0_CLK_S3D1),
164 
165 	DEF_MOD("rwdt",			 402,	R8A774C0_CLK_R),
166 	DEF_MOD("intc-ex",		 407,	R8A774C0_CLK_CP),
167 	DEF_MOD("intc-ap",		 408,	R8A774C0_CLK_S0D3),
168 
169 	DEF_MOD("audmac0",		 502,	R8A774C0_CLK_S1D2),
170 	DEF_MOD("hscif4",		 516,	R8A774C0_CLK_S3D1C),
171 	DEF_MOD("hscif3",		 517,	R8A774C0_CLK_S3D1C),
172 	DEF_MOD("hscif2",		 518,	R8A774C0_CLK_S3D1C),
173 	DEF_MOD("hscif1",		 519,	R8A774C0_CLK_S3D1C),
174 	DEF_MOD("hscif0",		 520,	R8A774C0_CLK_S3D1C),
175 	DEF_MOD("thermal",		 522,	R8A774C0_CLK_CP),
176 	DEF_MOD("pwm",			 523,	R8A774C0_CLK_S3D4C),
177 
178 	DEF_MOD("fcpvd1",		 602,	R8A774C0_CLK_S1D2),
179 	DEF_MOD("fcpvd0",		 603,	R8A774C0_CLK_S1D2),
180 	DEF_MOD("fcpvb0",		 607,	R8A774C0_CLK_S0D1),
181 	DEF_MOD("fcpvi0",		 611,	R8A774C0_CLK_S0D1),
182 	DEF_MOD("fcpf0",		 615,	R8A774C0_CLK_S0D1),
183 	DEF_MOD("fcpcs",		 619,	R8A774C0_CLK_S0D1),
184 	DEF_MOD("vspd1",		 622,	R8A774C0_CLK_S1D2),
185 	DEF_MOD("vspd0",		 623,	R8A774C0_CLK_S1D2),
186 	DEF_MOD("vspb",			 626,	R8A774C0_CLK_S0D1),
187 	DEF_MOD("vspi0",		 631,	R8A774C0_CLK_S0D1),
188 
189 	DEF_MOD("ehci0",		 703,	R8A774C0_CLK_S3D2),
190 	DEF_MOD("hsusb",		 704,	R8A774C0_CLK_S3D2),
191 	DEF_MOD("csi40",		 716,	R8A774C0_CLK_CSI0),
192 	DEF_MOD("du1",			 723,	R8A774C0_CLK_S1D1),
193 	DEF_MOD("du0",			 724,	R8A774C0_CLK_S1D1),
194 	DEF_MOD("lvds",			 727,	R8A774C0_CLK_S2D1),
195 
196 	DEF_MOD("vin5",			 806,	R8A774C0_CLK_S1D2),
197 	DEF_MOD("vin4",			 807,	R8A774C0_CLK_S1D2),
198 	DEF_MOD("etheravb",		 812,	R8A774C0_CLK_S3D2),
199 
200 	DEF_MOD("gpio6",		 906,	R8A774C0_CLK_S3D4),
201 	DEF_MOD("gpio5",		 907,	R8A774C0_CLK_S3D4),
202 	DEF_MOD("gpio4",		 908,	R8A774C0_CLK_S3D4),
203 	DEF_MOD("gpio3",		 909,	R8A774C0_CLK_S3D4),
204 	DEF_MOD("gpio2",		 910,	R8A774C0_CLK_S3D4),
205 	DEF_MOD("gpio1",		 911,	R8A774C0_CLK_S3D4),
206 	DEF_MOD("gpio0",		 912,	R8A774C0_CLK_S3D4),
207 	DEF_MOD("can-fd",		 914,	R8A774C0_CLK_S3D2),
208 	DEF_MOD("can-if1",		 915,	R8A774C0_CLK_S3D4),
209 	DEF_MOD("can-if0",		 916,	R8A774C0_CLK_S3D4),
210 	DEF_MOD("rpc-if",		 917,	R8A774C0_CLK_RPCD2),
211 	DEF_MOD("i2c6",			 918,	R8A774C0_CLK_S3D2),
212 	DEF_MOD("i2c5",			 919,	R8A774C0_CLK_S3D2),
213 	DEF_MOD("i2c-dvfs",		 926,	R8A774C0_CLK_CP),
214 	DEF_MOD("i2c4",			 927,	R8A774C0_CLK_S3D2),
215 	DEF_MOD("i2c3",			 928,	R8A774C0_CLK_S3D2),
216 	DEF_MOD("i2c2",			 929,	R8A774C0_CLK_S3D2),
217 	DEF_MOD("i2c1",			 930,	R8A774C0_CLK_S3D2),
218 	DEF_MOD("i2c0",			 931,	R8A774C0_CLK_S3D2),
219 
220 	DEF_MOD("i2c7",			1003,	R8A774C0_CLK_S3D2),
221 	DEF_MOD("ssi-all",		1005,	R8A774C0_CLK_S3D4),
222 	DEF_MOD("ssi9",			1006,	MOD_CLK_ID(1005)),
223 	DEF_MOD("ssi8",			1007,	MOD_CLK_ID(1005)),
224 	DEF_MOD("ssi7",			1008,	MOD_CLK_ID(1005)),
225 	DEF_MOD("ssi6",			1009,	MOD_CLK_ID(1005)),
226 	DEF_MOD("ssi5",			1010,	MOD_CLK_ID(1005)),
227 	DEF_MOD("ssi4",			1011,	MOD_CLK_ID(1005)),
228 	DEF_MOD("ssi3",			1012,	MOD_CLK_ID(1005)),
229 	DEF_MOD("ssi2",			1013,	MOD_CLK_ID(1005)),
230 	DEF_MOD("ssi1",			1014,	MOD_CLK_ID(1005)),
231 	DEF_MOD("ssi0",			1015,	MOD_CLK_ID(1005)),
232 	DEF_MOD("scu-all",		1017,	R8A774C0_CLK_S3D4),
233 	DEF_MOD("scu-dvc1",		1018,	MOD_CLK_ID(1017)),
234 	DEF_MOD("scu-dvc0",		1019,	MOD_CLK_ID(1017)),
235 	DEF_MOD("scu-ctu1-mix1",	1020,	MOD_CLK_ID(1017)),
236 	DEF_MOD("scu-ctu0-mix0",	1021,	MOD_CLK_ID(1017)),
237 	DEF_MOD("scu-src9",		1022,	MOD_CLK_ID(1017)),
238 	DEF_MOD("scu-src8",		1023,	MOD_CLK_ID(1017)),
239 	DEF_MOD("scu-src7",		1024,	MOD_CLK_ID(1017)),
240 	DEF_MOD("scu-src6",		1025,	MOD_CLK_ID(1017)),
241 	DEF_MOD("scu-src5",		1026,	MOD_CLK_ID(1017)),
242 	DEF_MOD("scu-src4",		1027,	MOD_CLK_ID(1017)),
243 	DEF_MOD("scu-src3",		1028,	MOD_CLK_ID(1017)),
244 	DEF_MOD("scu-src2",		1029,	MOD_CLK_ID(1017)),
245 	DEF_MOD("scu-src1",		1030,	MOD_CLK_ID(1017)),
246 	DEF_MOD("scu-src0",		1031,	MOD_CLK_ID(1017)),
247 };
248 
249 static const unsigned int r8a774c0_crit_mod_clks[] __initconst = {
250 	MOD_CLK_ID(402),	/* RWDT */
251 	MOD_CLK_ID(408),	/* INTC-AP (GIC) */
252 };
253 
254 /*
255  * CPG Clock Data
256  */
257 
258 /*
259  * MD19		EXTAL (MHz)	PLL0		PLL1		PLL3
260  *--------------------------------------------------------------------
261  * 0		48 x 1		x100/1		x100/3		x100/3
262  * 1		48 x 1		x100/1		x100/3		 x58/3
263  */
264 #define CPG_PLL_CONFIG_INDEX(md)	(((md) & BIT(19)) >> 19)
265 
266 static const struct rcar_gen3_cpg_pll_config cpg_pll_configs[2] __initconst = {
267 	/* EXTAL div	PLL1 mult/div	PLL3 mult/div */
268 	{ 1,		100,	3,	100,	3,	},
269 	{ 1,		100,	3,	 58,	3,	},
270 };
271 
272 static int __init r8a774c0_cpg_mssr_init(struct device *dev)
273 {
274 	const struct rcar_gen3_cpg_pll_config *cpg_pll_config;
275 	u32 cpg_mode;
276 	int error;
277 
278 	error = rcar_rst_read_mode_pins(&cpg_mode);
279 	if (error)
280 		return error;
281 
282 	cpg_pll_config = &cpg_pll_configs[CPG_PLL_CONFIG_INDEX(cpg_mode)];
283 
284 	return rcar_gen3_cpg_init(cpg_pll_config, 0, cpg_mode);
285 }
286 
287 const struct cpg_mssr_info r8a774c0_cpg_mssr_info __initconst = {
288 	/* Core Clocks */
289 	.core_clks = r8a774c0_core_clks,
290 	.num_core_clks = ARRAY_SIZE(r8a774c0_core_clks),
291 	.last_dt_core_clk = LAST_DT_CORE_CLK,
292 	.num_total_core_clks = MOD_CLK_BASE,
293 
294 	/* Module Clocks */
295 	.mod_clks = r8a774c0_mod_clks,
296 	.num_mod_clks = ARRAY_SIZE(r8a774c0_mod_clks),
297 	.num_hw_mod_clks = 12 * 32,
298 
299 	/* Critical Module Clocks */
300 	.crit_mod_clks = r8a774c0_crit_mod_clks,
301 	.num_crit_mod_clks = ARRAY_SIZE(r8a774c0_crit_mod_clks),
302 
303 	/* Callbacks */
304 	.init = r8a774c0_cpg_mssr_init,
305 	.cpg_clk_register = rcar_gen3_cpg_clk_register,
306 };
307