1// SPDX-License-Identifier: GPL-2.0
2/*
3 * r8a77990 Clock Pulse Generator / Module Standby and Software Reset
4 *
5 * Copyright (C) 2018-2019 Renesas Electronics Corp.
6 *
7 * Based on r8a7795-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/r8a77990-cpg-mssr.h>
19
20#include "renesas-cpg-mssr.h"
21#include "rcar-gen3-cpg.h"
22
23enum clk_ids {
24	/* Core Clock Outputs exported to DT */
25	LAST_DT_CORE_CLK = R8A77990_CLK_CPEX,
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_RINT,
48	CLK_OCO,
49
50	/* Module Clocks */
51	MOD_CLK_BASE
52};
53
54static const struct cpg_core_clk r8a77990_core_clks[] __initconst = {
55	/* External Clock Inputs */
56	DEF_INPUT("extal",     CLK_EXTAL),
57
58	/* Internal Core Clocks */
59	DEF_BASE(".main",      CLK_MAIN, CLK_TYPE_GEN3_MAIN,       CLK_EXTAL),
60	DEF_BASE(".pll1",      CLK_PLL1, CLK_TYPE_GEN3_PLL1,       CLK_MAIN),
61	DEF_BASE(".pll3",      CLK_PLL3, CLK_TYPE_GEN3_PLL3,       CLK_MAIN),
62
63	DEF_FIXED(".pll0",     CLK_PLL0,           CLK_MAIN,	   1, 100),
64	DEF_FIXED(".pll0d4",   CLK_PLL0D4,         CLK_PLL0,       4, 1),
65	DEF_FIXED(".pll0d6",   CLK_PLL0D6,         CLK_PLL0,       6, 1),
66	DEF_FIXED(".pll0d8",   CLK_PLL0D8,         CLK_PLL0,       8, 1),
67	DEF_FIXED(".pll0d20",  CLK_PLL0D20,        CLK_PLL0,      20, 1),
68	DEF_FIXED(".pll0d24",  CLK_PLL0D24,        CLK_PLL0,      24, 1),
69	DEF_FIXED(".pll1d2",   CLK_PLL1D2,         CLK_PLL1,       2, 1),
70	DEF_FIXED(".pe",       CLK_PE,             CLK_PLL0D20,    1, 1),
71	DEF_FIXED(".s0",       CLK_S0,             CLK_PLL1,       2, 1),
72	DEF_FIXED(".s1",       CLK_S1,             CLK_PLL1,       3, 1),
73	DEF_FIXED(".s2",       CLK_S2,             CLK_PLL1,       4, 1),
74	DEF_FIXED(".s3",       CLK_S3,             CLK_PLL1,       6, 1),
75	DEF_FIXED(".sdsrc",    CLK_SDSRC,          CLK_PLL1,       2, 1),
76
77	DEF_DIV6_RO(".r",      CLK_RINT,           CLK_EXTAL, CPG_RCKCR, 32),
78
79	DEF_RATE(".oco",       CLK_OCO,            8 * 1000 * 1000),
80
81	/* Core Clock Outputs */
82	DEF_FIXED("za2",       R8A77990_CLK_ZA2,   CLK_PLL0D24,    1, 1),
83	DEF_FIXED("za8",       R8A77990_CLK_ZA8,   CLK_PLL0D8,     1, 1),
84	DEF_GEN3_Z("z2",       R8A77990_CLK_Z2,    CLK_TYPE_GEN3_Z, CLK_PLL0, 4, 8),
85	DEF_FIXED("ztr",       R8A77990_CLK_ZTR,   CLK_PLL1,       6, 1),
86	DEF_FIXED("zt",        R8A77990_CLK_ZT,    CLK_PLL1,       4, 1),
87	DEF_FIXED("zx",        R8A77990_CLK_ZX,    CLK_PLL1,       3, 1),
88	DEF_FIXED("s0d1",      R8A77990_CLK_S0D1,  CLK_S0,         1, 1),
89	DEF_FIXED("s0d3",      R8A77990_CLK_S0D3,  CLK_S0,         3, 1),
90	DEF_FIXED("s0d6",      R8A77990_CLK_S0D6,  CLK_S0,         6, 1),
91	DEF_FIXED("s0d12",     R8A77990_CLK_S0D12, CLK_S0,        12, 1),
92	DEF_FIXED("s0d24",     R8A77990_CLK_S0D24, CLK_S0,        24, 1),
93	DEF_FIXED("s1d1",      R8A77990_CLK_S1D1,  CLK_S1,         1, 1),
94	DEF_FIXED("s1d2",      R8A77990_CLK_S1D2,  CLK_S1,         2, 1),
95	DEF_FIXED("s1d4",      R8A77990_CLK_S1D4,  CLK_S1,         4, 1),
96	DEF_FIXED("s2d1",      R8A77990_CLK_S2D1,  CLK_S2,         1, 1),
97	DEF_FIXED("s2d2",      R8A77990_CLK_S2D2,  CLK_S2,         2, 1),
98	DEF_FIXED("s2d4",      R8A77990_CLK_S2D4,  CLK_S2,         4, 1),
99	DEF_FIXED("s3d1",      R8A77990_CLK_S3D1,  CLK_S3,         1, 1),
100	DEF_FIXED("s3d2",      R8A77990_CLK_S3D2,  CLK_S3,         2, 1),
101	DEF_FIXED("s3d4",      R8A77990_CLK_S3D4,  CLK_S3,         4, 1),
102
103	DEF_GEN3_SD("sd0",     R8A77990_CLK_SD0,   CLK_SDSRC,	  0x0074),
104	DEF_GEN3_SD("sd1",     R8A77990_CLK_SD1,   CLK_SDSRC,	  0x0078),
105	DEF_GEN3_SD("sd3",     R8A77990_CLK_SD3,   CLK_SDSRC,	  0x026c),
106
107	DEF_FIXED("cl",        R8A77990_CLK_CL,    CLK_PLL1,      48, 1),
108	DEF_FIXED("cr",        R8A77990_CLK_CR,    CLK_PLL1D2,     2, 1),
109	DEF_FIXED("cp",        R8A77990_CLK_CP,    CLK_EXTAL,      2, 1),
110	DEF_FIXED("cpex",      R8A77990_CLK_CPEX,  CLK_EXTAL,      4, 1),
111
112	DEF_DIV6_RO("osc",     R8A77990_CLK_OSC,   CLK_EXTAL, CPG_RCKCR,  8),
113
114	DEF_GEN3_PE("s0d6c",   R8A77990_CLK_S0D6C, CLK_S0, 6, CLK_PE, 2),
115	DEF_GEN3_PE("s3d1c",   R8A77990_CLK_S3D1C, CLK_S3, 1, CLK_PE, 1),
116	DEF_GEN3_PE("s3d2c",   R8A77990_CLK_S3D2C, CLK_S3, 2, CLK_PE, 2),
117	DEF_GEN3_PE("s3d4c",   R8A77990_CLK_S3D4C, CLK_S3, 4, CLK_PE, 4),
118
119	DEF_DIV6P1("canfd",    R8A77990_CLK_CANFD, CLK_PLL0D6, 0x244),
120	DEF_DIV6P1("csi0",     R8A77990_CLK_CSI0,  CLK_PLL1D2, 0x00c),
121	DEF_DIV6P1("mso",      R8A77990_CLK_MSO,   CLK_PLL1D2, 0x014),
122
123	DEF_GEN3_RCKSEL("r",   R8A77990_CLK_R, CLK_RINT, 1, CLK_OCO, 61 * 4),
124};
125
126static const struct mssr_mod_clk r8a77990_mod_clks[] __initconst = {
127	DEF_MOD("scif5",		 202,	R8A77990_CLK_S3D4C),
128	DEF_MOD("scif4",		 203,	R8A77990_CLK_S3D4C),
129	DEF_MOD("scif3",		 204,	R8A77990_CLK_S3D4C),
130	DEF_MOD("scif1",		 206,	R8A77990_CLK_S3D4C),
131	DEF_MOD("scif0",		 207,	R8A77990_CLK_S3D4C),
132	DEF_MOD("msiof3",		 208,	R8A77990_CLK_MSO),
133	DEF_MOD("msiof2",		 209,	R8A77990_CLK_MSO),
134	DEF_MOD("msiof1",		 210,	R8A77990_CLK_MSO),
135	DEF_MOD("msiof0",		 211,	R8A77990_CLK_MSO),
136	DEF_MOD("sys-dmac2",		 217,	R8A77990_CLK_S3D1),
137	DEF_MOD("sys-dmac1",		 218,	R8A77990_CLK_S3D1),
138	DEF_MOD("sys-dmac0",		 219,	R8A77990_CLK_S3D1),
139	DEF_MOD("sceg-pub",		 229,	R8A77990_CLK_CR),
140
141	DEF_MOD("cmt3",			 300,	R8A77990_CLK_R),
142	DEF_MOD("cmt2",			 301,	R8A77990_CLK_R),
143	DEF_MOD("cmt1",			 302,	R8A77990_CLK_R),
144	DEF_MOD("cmt0",			 303,	R8A77990_CLK_R),
145	DEF_MOD("scif2",		 310,	R8A77990_CLK_S3D4C),
146	DEF_MOD("sdif3",		 311,	R8A77990_CLK_SD3),
147	DEF_MOD("sdif1",		 313,	R8A77990_CLK_SD1),
148	DEF_MOD("sdif0",		 314,	R8A77990_CLK_SD0),
149	DEF_MOD("pcie0",		 319,	R8A77990_CLK_S3D1),
150	DEF_MOD("usb3-if0",		 328,	R8A77990_CLK_S3D1),
151	DEF_MOD("usb-dmac0",		 330,	R8A77990_CLK_S3D1),
152	DEF_MOD("usb-dmac1",		 331,	R8A77990_CLK_S3D1),
153
154	DEF_MOD("rwdt",			 402,	R8A77990_CLK_R),
155	DEF_MOD("intc-ex",		 407,	R8A77990_CLK_CP),
156	DEF_MOD("intc-ap",		 408,	R8A77990_CLK_S0D3),
157
158	DEF_MOD("audmac0",		 502,	R8A77990_CLK_S1D2),
159	DEF_MOD("drif31",		 508,	R8A77990_CLK_S3D2),
160	DEF_MOD("drif30",		 509,	R8A77990_CLK_S3D2),
161	DEF_MOD("drif21",		 510,	R8A77990_CLK_S3D2),
162	DEF_MOD("drif20",		 511,	R8A77990_CLK_S3D2),
163	DEF_MOD("drif11",		 512,	R8A77990_CLK_S3D2),
164	DEF_MOD("drif10",		 513,	R8A77990_CLK_S3D2),
165	DEF_MOD("drif01",		 514,	R8A77990_CLK_S3D2),
166	DEF_MOD("drif00",		 515,	R8A77990_CLK_S3D2),
167	DEF_MOD("hscif4",		 516,	R8A77990_CLK_S3D1C),
168	DEF_MOD("hscif3",		 517,	R8A77990_CLK_S3D1C),
169	DEF_MOD("hscif2",		 518,	R8A77990_CLK_S3D1C),
170	DEF_MOD("hscif1",		 519,	R8A77990_CLK_S3D1C),
171	DEF_MOD("hscif0",		 520,	R8A77990_CLK_S3D1C),
172	DEF_MOD("thermal",		 522,	R8A77990_CLK_CP),
173	DEF_MOD("pwm",			 523,	R8A77990_CLK_S3D4C),
174
175	DEF_MOD("fcpvd1",		 602,	R8A77990_CLK_S1D2),
176	DEF_MOD("fcpvd0",		 603,	R8A77990_CLK_S1D2),
177	DEF_MOD("fcpvb0",		 607,	R8A77990_CLK_S0D1),
178	DEF_MOD("fcpvi0",		 611,	R8A77990_CLK_S0D1),
179	DEF_MOD("fcpf0",		 615,	R8A77990_CLK_S0D1),
180	DEF_MOD("fcpcs",		 619,	R8A77990_CLK_S0D1),
181	DEF_MOD("vspd1",		 622,	R8A77990_CLK_S1D2),
182	DEF_MOD("vspd0",		 623,	R8A77990_CLK_S1D2),
183	DEF_MOD("vspb",			 626,	R8A77990_CLK_S0D1),
184	DEF_MOD("vspi0",		 631,	R8A77990_CLK_S0D1),
185
186	DEF_MOD("ehci0",		 703,	R8A77990_CLK_S3D2),
187	DEF_MOD("hsusb",		 704,	R8A77990_CLK_S3D2),
188	DEF_MOD("cmm1",			 710,	R8A77990_CLK_S1D1),
189	DEF_MOD("cmm0",			 711,	R8A77990_CLK_S1D1),
190	DEF_MOD("csi40",		 716,	R8A77990_CLK_CSI0),
191	DEF_MOD("du1",			 723,	R8A77990_CLK_S1D1),
192	DEF_MOD("du0",			 724,	R8A77990_CLK_S1D1),
193	DEF_MOD("lvds",			 727,	R8A77990_CLK_S2D1),
194
195	DEF_MOD("vin5",			 806,	R8A77990_CLK_S1D2),
196	DEF_MOD("vin4",			 807,	R8A77990_CLK_S1D2),
197	DEF_MOD("etheravb",		 812,	R8A77990_CLK_S3D2),
198
199	DEF_MOD("gpio6",		 906,	R8A77990_CLK_S3D4),
200	DEF_MOD("gpio5",		 907,	R8A77990_CLK_S3D4),
201	DEF_MOD("gpio4",		 908,	R8A77990_CLK_S3D4),
202	DEF_MOD("gpio3",		 909,	R8A77990_CLK_S3D4),
203	DEF_MOD("gpio2",		 910,	R8A77990_CLK_S3D4),
204	DEF_MOD("gpio1",		 911,	R8A77990_CLK_S3D4),
205	DEF_MOD("gpio0",		 912,	R8A77990_CLK_S3D4),
206	DEF_MOD("can-fd",		 914,	R8A77990_CLK_S3D2),
207	DEF_MOD("can-if1",		 915,	R8A77990_CLK_S3D4),
208	DEF_MOD("can-if0",		 916,	R8A77990_CLK_S3D4),
209	DEF_MOD("i2c6",			 918,	R8A77990_CLK_S3D2),
210	DEF_MOD("i2c5",			 919,	R8A77990_CLK_S3D2),
211	DEF_MOD("i2c-dvfs",		 926,	R8A77990_CLK_CP),
212	DEF_MOD("i2c4",			 927,	R8A77990_CLK_S3D2),
213	DEF_MOD("i2c3",			 928,	R8A77990_CLK_S3D2),
214	DEF_MOD("i2c2",			 929,	R8A77990_CLK_S3D2),
215	DEF_MOD("i2c1",			 930,	R8A77990_CLK_S3D2),
216	DEF_MOD("i2c0",			 931,	R8A77990_CLK_S3D2),
217
218	DEF_MOD("i2c7",			1003,	R8A77990_CLK_S3D2),
219	DEF_MOD("ssi-all",		1005,	R8A77990_CLK_S3D4),
220	DEF_MOD("ssi9",			1006,	MOD_CLK_ID(1005)),
221	DEF_MOD("ssi8",			1007,	MOD_CLK_ID(1005)),
222	DEF_MOD("ssi7",			1008,	MOD_CLK_ID(1005)),
223	DEF_MOD("ssi6",			1009,	MOD_CLK_ID(1005)),
224	DEF_MOD("ssi5",			1010,	MOD_CLK_ID(1005)),
225	DEF_MOD("ssi4",			1011,	MOD_CLK_ID(1005)),
226	DEF_MOD("ssi3",			1012,	MOD_CLK_ID(1005)),
227	DEF_MOD("ssi2",			1013,	MOD_CLK_ID(1005)),
228	DEF_MOD("ssi1",			1014,	MOD_CLK_ID(1005)),
229	DEF_MOD("ssi0",			1015,	MOD_CLK_ID(1005)),
230	DEF_MOD("scu-all",		1017,	R8A77990_CLK_S3D4),
231	DEF_MOD("scu-dvc1",		1018,	MOD_CLK_ID(1017)),
232	DEF_MOD("scu-dvc0",		1019,	MOD_CLK_ID(1017)),
233	DEF_MOD("scu-ctu1-mix1",	1020,	MOD_CLK_ID(1017)),
234	DEF_MOD("scu-ctu0-mix0",	1021,	MOD_CLK_ID(1017)),
235	DEF_MOD("scu-src9",		1022,	MOD_CLK_ID(1017)),
236	DEF_MOD("scu-src8",		1023,	MOD_CLK_ID(1017)),
237	DEF_MOD("scu-src7",		1024,	MOD_CLK_ID(1017)),
238	DEF_MOD("scu-src6",		1025,	MOD_CLK_ID(1017)),
239	DEF_MOD("scu-src5",		1026,	MOD_CLK_ID(1017)),
240	DEF_MOD("scu-src4",		1027,	MOD_CLK_ID(1017)),
241	DEF_MOD("scu-src3",		1028,	MOD_CLK_ID(1017)),
242	DEF_MOD("scu-src2",		1029,	MOD_CLK_ID(1017)),
243	DEF_MOD("scu-src1",		1030,	MOD_CLK_ID(1017)),
244	DEF_MOD("scu-src0",		1031,	MOD_CLK_ID(1017)),
245};
246
247static const unsigned int r8a77990_crit_mod_clks[] __initconst = {
248	MOD_CLK_ID(402),	/* RWDT */
249	MOD_CLK_ID(408),	/* INTC-AP (GIC) */
250};
251
252/*
253 * CPG Clock Data
254 */
255
256/*
257 * MD19		EXTAL (MHz)	PLL0		PLL1		PLL3
258 *--------------------------------------------------------------------
259 * 0		48 x 1		x100/1		x100/3		x100/3
260 * 1		48 x 1		x100/1		x100/3		 x58/3
261 */
262#define CPG_PLL_CONFIG_INDEX(md)	(((md) & BIT(19)) >> 19)
263
264static const struct rcar_gen3_cpg_pll_config cpg_pll_configs[2] __initconst = {
265	/* EXTAL div	PLL1 mult/div	PLL3 mult/div */
266	{ 1,		100,	3,	100,	3,	},
267	{ 1,		100,	3,	 58,	3,	},
268};
269
270static int __init r8a77990_cpg_mssr_init(struct device *dev)
271{
272	const struct rcar_gen3_cpg_pll_config *cpg_pll_config;
273	u32 cpg_mode;
274	int error;
275
276	error = rcar_rst_read_mode_pins(&cpg_mode);
277	if (error)
278		return error;
279
280	cpg_pll_config = &cpg_pll_configs[CPG_PLL_CONFIG_INDEX(cpg_mode)];
281
282	return rcar_gen3_cpg_init(cpg_pll_config, 0, cpg_mode);
283}
284
285const struct cpg_mssr_info r8a77990_cpg_mssr_info __initconst = {
286	/* Core Clocks */
287	.core_clks = r8a77990_core_clks,
288	.num_core_clks = ARRAY_SIZE(r8a77990_core_clks),
289	.last_dt_core_clk = LAST_DT_CORE_CLK,
290	.num_total_core_clks = MOD_CLK_BASE,
291
292	/* Module Clocks */
293	.mod_clks = r8a77990_mod_clks,
294	.num_mod_clks = ARRAY_SIZE(r8a77990_mod_clks),
295	.num_hw_mod_clks = 12 * 32,
296
297	/* Critical Module Clocks */
298	.crit_mod_clks = r8a77990_crit_mod_clks,
299	.num_crit_mod_clks = ARRAY_SIZE(r8a77990_crit_mod_clks),
300
301	/* Callbacks */
302	.init = r8a77990_cpg_mssr_init,
303	.cpg_clk_register = rcar_gen3_cpg_clk_register,
304};
305