1 // SPDX-License-Identifier: GPL-2.0
2 /*
3  * r8a7795 Clock Pulse Generator / Module Standby and Software Reset
4  *
5  * Copyright (C) 2015 Glider bvba
6  * Copyright (C) 2018-2019 Renesas Electronics Corp.
7  *
8  * Based on clk-rcar-gen3.c
9  *
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 #include <linux/sys_soc.h>
18 
19 #include <dt-bindings/clock/r8a7795-cpg-mssr.h>
20 
21 #include "renesas-cpg-mssr.h"
22 #include "rcar-gen3-cpg.h"
23 
24 enum clk_ids {
25 	/* Core Clock Outputs exported to DT */
26 	LAST_DT_CORE_CLK = R8A7795_CLK_S0D12,
27 
28 	/* External Input Clocks */
29 	CLK_EXTAL,
30 	CLK_EXTALR,
31 
32 	/* Internal Core Clocks */
33 	CLK_MAIN,
34 	CLK_PLL0,
35 	CLK_PLL1,
36 	CLK_PLL2,
37 	CLK_PLL3,
38 	CLK_PLL4,
39 	CLK_PLL1_DIV2,
40 	CLK_PLL1_DIV4,
41 	CLK_S0,
42 	CLK_S1,
43 	CLK_S2,
44 	CLK_S3,
45 	CLK_SDSRC,
46 	CLK_SSPSRC,
47 	CLK_RPCSRC,
48 	CLK_RINT,
49 
50 	/* Module Clocks */
51 	MOD_CLK_BASE
52 };
53 
54 static struct cpg_core_clk r8a7795_core_clks[] __initdata = {
55 	/* External Clock Inputs */
56 	DEF_INPUT("extal",      CLK_EXTAL),
57 	DEF_INPUT("extalr",     CLK_EXTALR),
58 
59 	/* Internal Core Clocks */
60 	DEF_BASE(".main",       CLK_MAIN, CLK_TYPE_GEN3_MAIN, CLK_EXTAL),
61 	DEF_BASE(".pll0",       CLK_PLL0, CLK_TYPE_GEN3_PLL0, CLK_MAIN),
62 	DEF_BASE(".pll1",       CLK_PLL1, CLK_TYPE_GEN3_PLL1, CLK_MAIN),
63 	DEF_BASE(".pll2",       CLK_PLL2, CLK_TYPE_GEN3_PLL2, CLK_MAIN),
64 	DEF_BASE(".pll3",       CLK_PLL3, CLK_TYPE_GEN3_PLL3, CLK_MAIN),
65 	DEF_BASE(".pll4",       CLK_PLL4, CLK_TYPE_GEN3_PLL4, CLK_MAIN),
66 
67 	DEF_FIXED(".pll1_div2", CLK_PLL1_DIV2,     CLK_PLL1,       2, 1),
68 	DEF_FIXED(".pll1_div4", CLK_PLL1_DIV4,     CLK_PLL1_DIV2,  2, 1),
69 	DEF_FIXED(".s0",        CLK_S0,            CLK_PLL1_DIV2,  2, 1),
70 	DEF_FIXED(".s1",        CLK_S1,            CLK_PLL1_DIV2,  3, 1),
71 	DEF_FIXED(".s2",        CLK_S2,            CLK_PLL1_DIV2,  4, 1),
72 	DEF_FIXED(".s3",        CLK_S3,            CLK_PLL1_DIV2,  6, 1),
73 	DEF_FIXED(".sdsrc",     CLK_SDSRC,         CLK_PLL1_DIV2,  2, 1),
74 
75 	DEF_BASE(".rpcsrc",     CLK_RPCSRC, CLK_TYPE_GEN3_RPCSRC, CLK_PLL1),
76 
77 	DEF_GEN3_OSC(".r",      CLK_RINT,          CLK_EXTAL,      32),
78 
79 	/* Core Clock Outputs */
80 	DEF_GEN3_Z("z",         R8A7795_CLK_Z,     CLK_TYPE_GEN3_Z,  CLK_PLL0, 2, 8),
81 	DEF_GEN3_Z("z2",        R8A7795_CLK_Z2,    CLK_TYPE_GEN3_Z,  CLK_PLL2, 2, 0),
82 	DEF_FIXED("ztr",        R8A7795_CLK_ZTR,   CLK_PLL1_DIV2,  6, 1),
83 	DEF_FIXED("ztrd2",      R8A7795_CLK_ZTRD2, CLK_PLL1_DIV2, 12, 1),
84 	DEF_FIXED("zt",         R8A7795_CLK_ZT,    CLK_PLL1_DIV2,  4, 1),
85 	DEF_FIXED("zx",         R8A7795_CLK_ZX,    CLK_PLL1_DIV2,  2, 1),
86 	DEF_FIXED("s0d1",       R8A7795_CLK_S0D1,  CLK_S0,         1, 1),
87 	DEF_FIXED("s0d2",       R8A7795_CLK_S0D2,  CLK_S0,         2, 1),
88 	DEF_FIXED("s0d3",       R8A7795_CLK_S0D3,  CLK_S0,         3, 1),
89 	DEF_FIXED("s0d4",       R8A7795_CLK_S0D4,  CLK_S0,         4, 1),
90 	DEF_FIXED("s0d6",       R8A7795_CLK_S0D6,  CLK_S0,         6, 1),
91 	DEF_FIXED("s0d8",       R8A7795_CLK_S0D8,  CLK_S0,         8, 1),
92 	DEF_FIXED("s0d12",      R8A7795_CLK_S0D12, CLK_S0,        12, 1),
93 	DEF_FIXED("s1d1",       R8A7795_CLK_S1D1,  CLK_S1,         1, 1),
94 	DEF_FIXED("s1d2",       R8A7795_CLK_S1D2,  CLK_S1,         2, 1),
95 	DEF_FIXED("s1d4",       R8A7795_CLK_S1D4,  CLK_S1,         4, 1),
96 	DEF_FIXED("s2d1",       R8A7795_CLK_S2D1,  CLK_S2,         1, 1),
97 	DEF_FIXED("s2d2",       R8A7795_CLK_S2D2,  CLK_S2,         2, 1),
98 	DEF_FIXED("s2d4",       R8A7795_CLK_S2D4,  CLK_S2,         4, 1),
99 	DEF_FIXED("s3d1",       R8A7795_CLK_S3D1,  CLK_S3,         1, 1),
100 	DEF_FIXED("s3d2",       R8A7795_CLK_S3D2,  CLK_S3,         2, 1),
101 	DEF_FIXED("s3d4",       R8A7795_CLK_S3D4,  CLK_S3,         4, 1),
102 
103 	DEF_GEN3_SDH("sd0h",    R8A7795_CLK_SD0H,  CLK_SDSRC,        0x074),
104 	DEF_GEN3_SDH("sd1h",    R8A7795_CLK_SD1H,  CLK_SDSRC,        0x078),
105 	DEF_GEN3_SDH("sd2h",    R8A7795_CLK_SD2H,  CLK_SDSRC,        0x268),
106 	DEF_GEN3_SDH("sd3h",    R8A7795_CLK_SD3H,  CLK_SDSRC,        0x26c),
107 	DEF_GEN3_SD("sd0",      R8A7795_CLK_SD0,   R8A7795_CLK_SD0H, 0x074),
108 	DEF_GEN3_SD("sd1",      R8A7795_CLK_SD1,   R8A7795_CLK_SD1H, 0x078),
109 	DEF_GEN3_SD("sd2",      R8A7795_CLK_SD2,   R8A7795_CLK_SD2H, 0x268),
110 	DEF_GEN3_SD("sd3",      R8A7795_CLK_SD3,   R8A7795_CLK_SD3H, 0x26c),
111 
112 	DEF_BASE("rpc",         R8A7795_CLK_RPC,   CLK_TYPE_GEN3_RPC,   CLK_RPCSRC),
113 	DEF_BASE("rpcd2",       R8A7795_CLK_RPCD2, CLK_TYPE_GEN3_RPCD2, R8A7795_CLK_RPC),
114 
115 	DEF_FIXED("cl",         R8A7795_CLK_CL,    CLK_PLL1_DIV2, 48, 1),
116 	DEF_FIXED("cr",         R8A7795_CLK_CR,    CLK_PLL1_DIV4,  2, 1),
117 	DEF_FIXED("cp",         R8A7795_CLK_CP,    CLK_EXTAL,      2, 1),
118 	DEF_FIXED("cpex",       R8A7795_CLK_CPEX,  CLK_EXTAL,      2, 1),
119 
120 	DEF_DIV6P1("canfd",     R8A7795_CLK_CANFD, CLK_PLL1_DIV4, 0x244),
121 	DEF_DIV6P1("csi0",      R8A7795_CLK_CSI0,  CLK_PLL1_DIV4, 0x00c),
122 	DEF_DIV6P1("mso",       R8A7795_CLK_MSO,   CLK_PLL1_DIV4, 0x014),
123 	DEF_DIV6P1("hdmi",      R8A7795_CLK_HDMI,  CLK_PLL1_DIV4, 0x250),
124 
125 	DEF_GEN3_OSC("osc",     R8A7795_CLK_OSC,   CLK_EXTAL,     8),
126 
127 	DEF_BASE("r",           R8A7795_CLK_R,     CLK_TYPE_GEN3_R, CLK_RINT),
128 };
129 
130 static struct mssr_mod_clk r8a7795_mod_clks[] __initdata = {
131 	DEF_MOD("fdp1-1",		 118,	R8A7795_CLK_S0D1),
132 	DEF_MOD("fdp1-0",		 119,	R8A7795_CLK_S0D1),
133 	DEF_MOD("tmu4",			 121,	R8A7795_CLK_S0D6),
134 	DEF_MOD("tmu3",			 122,	R8A7795_CLK_S3D2),
135 	DEF_MOD("tmu2",			 123,	R8A7795_CLK_S3D2),
136 	DEF_MOD("tmu1",			 124,	R8A7795_CLK_S3D2),
137 	DEF_MOD("tmu0",			 125,	R8A7795_CLK_CP),
138 	DEF_MOD("scif5",		 202,	R8A7795_CLK_S3D4),
139 	DEF_MOD("scif4",		 203,	R8A7795_CLK_S3D4),
140 	DEF_MOD("scif3",		 204,	R8A7795_CLK_S3D4),
141 	DEF_MOD("scif1",		 206,	R8A7795_CLK_S3D4),
142 	DEF_MOD("scif0",		 207,	R8A7795_CLK_S3D4),
143 	DEF_MOD("msiof3",		 208,	R8A7795_CLK_MSO),
144 	DEF_MOD("msiof2",		 209,	R8A7795_CLK_MSO),
145 	DEF_MOD("msiof1",		 210,	R8A7795_CLK_MSO),
146 	DEF_MOD("msiof0",		 211,	R8A7795_CLK_MSO),
147 	DEF_MOD("sys-dmac2",		 217,	R8A7795_CLK_S3D1),
148 	DEF_MOD("sys-dmac1",		 218,	R8A7795_CLK_S3D1),
149 	DEF_MOD("sys-dmac0",		 219,	R8A7795_CLK_S0D3),
150 	DEF_MOD("sceg-pub",		 229,	R8A7795_CLK_CR),
151 	DEF_MOD("cmt3",			 300,	R8A7795_CLK_R),
152 	DEF_MOD("cmt2",			 301,	R8A7795_CLK_R),
153 	DEF_MOD("cmt1",			 302,	R8A7795_CLK_R),
154 	DEF_MOD("cmt0",			 303,	R8A7795_CLK_R),
155 	DEF_MOD("tpu0",			 304,	R8A7795_CLK_S3D4),
156 	DEF_MOD("scif2",		 310,	R8A7795_CLK_S3D4),
157 	DEF_MOD("sdif3",		 311,	R8A7795_CLK_SD3),
158 	DEF_MOD("sdif2",		 312,	R8A7795_CLK_SD2),
159 	DEF_MOD("sdif1",		 313,	R8A7795_CLK_SD1),
160 	DEF_MOD("sdif0",		 314,	R8A7795_CLK_SD0),
161 	DEF_MOD("pcie1",		 318,	R8A7795_CLK_S3D1),
162 	DEF_MOD("pcie0",		 319,	R8A7795_CLK_S3D1),
163 	DEF_MOD("usb-dmac30",		 326,	R8A7795_CLK_S3D1),
164 	DEF_MOD("usb3-if0",		 328,	R8A7795_CLK_S3D1),
165 	DEF_MOD("usb-dmac31",		 329,	R8A7795_CLK_S3D1),
166 	DEF_MOD("usb-dmac0",		 330,	R8A7795_CLK_S3D1),
167 	DEF_MOD("usb-dmac1",		 331,	R8A7795_CLK_S3D1),
168 	DEF_MOD("rwdt",			 402,	R8A7795_CLK_R),
169 	DEF_MOD("intc-ex",		 407,	R8A7795_CLK_CP),
170 	DEF_MOD("intc-ap",		 408,	R8A7795_CLK_S0D3),
171 	DEF_MOD("audmac1",		 501,	R8A7795_CLK_S1D2),
172 	DEF_MOD("audmac0",		 502,	R8A7795_CLK_S1D2),
173 	DEF_MOD("drif31",		 508,	R8A7795_CLK_S3D2),
174 	DEF_MOD("drif30",		 509,	R8A7795_CLK_S3D2),
175 	DEF_MOD("drif21",		 510,	R8A7795_CLK_S3D2),
176 	DEF_MOD("drif20",		 511,	R8A7795_CLK_S3D2),
177 	DEF_MOD("drif11",		 512,	R8A7795_CLK_S3D2),
178 	DEF_MOD("drif10",		 513,	R8A7795_CLK_S3D2),
179 	DEF_MOD("drif01",		 514,	R8A7795_CLK_S3D2),
180 	DEF_MOD("drif00",		 515,	R8A7795_CLK_S3D2),
181 	DEF_MOD("hscif4",		 516,	R8A7795_CLK_S3D1),
182 	DEF_MOD("hscif3",		 517,	R8A7795_CLK_S3D1),
183 	DEF_MOD("hscif2",		 518,	R8A7795_CLK_S3D1),
184 	DEF_MOD("hscif1",		 519,	R8A7795_CLK_S3D1),
185 	DEF_MOD("hscif0",		 520,	R8A7795_CLK_S3D1),
186 	DEF_MOD("thermal",		 522,	R8A7795_CLK_CP),
187 	DEF_MOD("pwm",			 523,	R8A7795_CLK_S0D12),
188 	DEF_MOD("fcpvd2",		 601,	R8A7795_CLK_S0D2),
189 	DEF_MOD("fcpvd1",		 602,	R8A7795_CLK_S0D2),
190 	DEF_MOD("fcpvd0",		 603,	R8A7795_CLK_S0D2),
191 	DEF_MOD("fcpvb1",		 606,	R8A7795_CLK_S0D1),
192 	DEF_MOD("fcpvb0",		 607,	R8A7795_CLK_S0D1),
193 	DEF_MOD("fcpvi1",		 610,	R8A7795_CLK_S0D1),
194 	DEF_MOD("fcpvi0",		 611,	R8A7795_CLK_S0D1),
195 	DEF_MOD("fcpf1",		 614,	R8A7795_CLK_S0D1),
196 	DEF_MOD("fcpf0",		 615,	R8A7795_CLK_S0D1),
197 	DEF_MOD("fcpcs",		 619,	R8A7795_CLK_S0D1),
198 	DEF_MOD("vspd2",		 621,	R8A7795_CLK_S0D2),
199 	DEF_MOD("vspd1",		 622,	R8A7795_CLK_S0D2),
200 	DEF_MOD("vspd0",		 623,	R8A7795_CLK_S0D2),
201 	DEF_MOD("vspbc",		 624,	R8A7795_CLK_S0D1),
202 	DEF_MOD("vspbd",		 626,	R8A7795_CLK_S0D1),
203 	DEF_MOD("vspi1",		 630,	R8A7795_CLK_S0D1),
204 	DEF_MOD("vspi0",		 631,	R8A7795_CLK_S0D1),
205 	DEF_MOD("ehci3",		 700,	R8A7795_CLK_S3D2),
206 	DEF_MOD("ehci2",		 701,	R8A7795_CLK_S3D2),
207 	DEF_MOD("ehci1",		 702,	R8A7795_CLK_S3D2),
208 	DEF_MOD("ehci0",		 703,	R8A7795_CLK_S3D2),
209 	DEF_MOD("hsusb",		 704,	R8A7795_CLK_S3D2),
210 	DEF_MOD("hsusb3",		 705,	R8A7795_CLK_S3D2),
211 	DEF_MOD("cmm3",			 708,	R8A7795_CLK_S2D1),
212 	DEF_MOD("cmm2",			 709,	R8A7795_CLK_S2D1),
213 	DEF_MOD("cmm1",			 710,	R8A7795_CLK_S2D1),
214 	DEF_MOD("cmm0",			 711,	R8A7795_CLK_S2D1),
215 	DEF_MOD("csi20",		 714,	R8A7795_CLK_CSI0),
216 	DEF_MOD("csi41",		 715,	R8A7795_CLK_CSI0),
217 	DEF_MOD("csi40",		 716,	R8A7795_CLK_CSI0),
218 	DEF_MOD("du3",			 721,	R8A7795_CLK_S2D1),
219 	DEF_MOD("du2",			 722,	R8A7795_CLK_S2D1),
220 	DEF_MOD("du1",			 723,	R8A7795_CLK_S2D1),
221 	DEF_MOD("du0",			 724,	R8A7795_CLK_S2D1),
222 	DEF_MOD("lvds",			 727,	R8A7795_CLK_S0D4),
223 	DEF_MOD("hdmi1",		 728,	R8A7795_CLK_HDMI),
224 	DEF_MOD("hdmi0",		 729,	R8A7795_CLK_HDMI),
225 	DEF_MOD("mlp",			 802,	R8A7795_CLK_S2D1),
226 	DEF_MOD("vin7",			 804,	R8A7795_CLK_S0D2),
227 	DEF_MOD("vin6",			 805,	R8A7795_CLK_S0D2),
228 	DEF_MOD("vin5",			 806,	R8A7795_CLK_S0D2),
229 	DEF_MOD("vin4",			 807,	R8A7795_CLK_S0D2),
230 	DEF_MOD("vin3",			 808,	R8A7795_CLK_S0D2),
231 	DEF_MOD("vin2",			 809,	R8A7795_CLK_S0D2),
232 	DEF_MOD("vin1",			 810,	R8A7795_CLK_S0D2),
233 	DEF_MOD("vin0",			 811,	R8A7795_CLK_S0D2),
234 	DEF_MOD("etheravb",		 812,	R8A7795_CLK_S0D6),
235 	DEF_MOD("sata0",		 815,	R8A7795_CLK_S3D2),
236 	DEF_MOD("imr3",			 820,	R8A7795_CLK_S0D2),
237 	DEF_MOD("imr2",			 821,	R8A7795_CLK_S0D2),
238 	DEF_MOD("imr1",			 822,	R8A7795_CLK_S0D2),
239 	DEF_MOD("imr0",			 823,	R8A7795_CLK_S0D2),
240 	DEF_MOD("gpio7",		 905,	R8A7795_CLK_S3D4),
241 	DEF_MOD("gpio6",		 906,	R8A7795_CLK_S3D4),
242 	DEF_MOD("gpio5",		 907,	R8A7795_CLK_S3D4),
243 	DEF_MOD("gpio4",		 908,	R8A7795_CLK_S3D4),
244 	DEF_MOD("gpio3",		 909,	R8A7795_CLK_S3D4),
245 	DEF_MOD("gpio2",		 910,	R8A7795_CLK_S3D4),
246 	DEF_MOD("gpio1",		 911,	R8A7795_CLK_S3D4),
247 	DEF_MOD("gpio0",		 912,	R8A7795_CLK_S3D4),
248 	DEF_MOD("can-fd",		 914,	R8A7795_CLK_S3D2),
249 	DEF_MOD("can-if1",		 915,	R8A7795_CLK_S3D4),
250 	DEF_MOD("can-if0",		 916,	R8A7795_CLK_S3D4),
251 	DEF_MOD("rpc-if",		 917,	R8A7795_CLK_RPCD2),
252 	DEF_MOD("i2c6",			 918,	R8A7795_CLK_S0D6),
253 	DEF_MOD("i2c5",			 919,	R8A7795_CLK_S0D6),
254 	DEF_MOD("i2c-dvfs",		 926,	R8A7795_CLK_CP),
255 	DEF_MOD("i2c4",			 927,	R8A7795_CLK_S0D6),
256 	DEF_MOD("i2c3",			 928,	R8A7795_CLK_S0D6),
257 	DEF_MOD("i2c2",			 929,	R8A7795_CLK_S3D2),
258 	DEF_MOD("i2c1",			 930,	R8A7795_CLK_S3D2),
259 	DEF_MOD("i2c0",			 931,	R8A7795_CLK_S3D2),
260 	DEF_MOD("ssi-all",		1005,	R8A7795_CLK_S3D4),
261 	DEF_MOD("ssi9",			1006,	MOD_CLK_ID(1005)),
262 	DEF_MOD("ssi8",			1007,	MOD_CLK_ID(1005)),
263 	DEF_MOD("ssi7",			1008,	MOD_CLK_ID(1005)),
264 	DEF_MOD("ssi6",			1009,	MOD_CLK_ID(1005)),
265 	DEF_MOD("ssi5",			1010,	MOD_CLK_ID(1005)),
266 	DEF_MOD("ssi4",			1011,	MOD_CLK_ID(1005)),
267 	DEF_MOD("ssi3",			1012,	MOD_CLK_ID(1005)),
268 	DEF_MOD("ssi2",			1013,	MOD_CLK_ID(1005)),
269 	DEF_MOD("ssi1",			1014,	MOD_CLK_ID(1005)),
270 	DEF_MOD("ssi0",			1015,	MOD_CLK_ID(1005)),
271 	DEF_MOD("scu-all",		1017,	R8A7795_CLK_S3D4),
272 	DEF_MOD("scu-dvc1",		1018,	MOD_CLK_ID(1017)),
273 	DEF_MOD("scu-dvc0",		1019,	MOD_CLK_ID(1017)),
274 	DEF_MOD("scu-ctu1-mix1",	1020,	MOD_CLK_ID(1017)),
275 	DEF_MOD("scu-ctu0-mix0",	1021,	MOD_CLK_ID(1017)),
276 	DEF_MOD("scu-src9",		1022,	MOD_CLK_ID(1017)),
277 	DEF_MOD("scu-src8",		1023,	MOD_CLK_ID(1017)),
278 	DEF_MOD("scu-src7",		1024,	MOD_CLK_ID(1017)),
279 	DEF_MOD("scu-src6",		1025,	MOD_CLK_ID(1017)),
280 	DEF_MOD("scu-src5",		1026,	MOD_CLK_ID(1017)),
281 	DEF_MOD("scu-src4",		1027,	MOD_CLK_ID(1017)),
282 	DEF_MOD("scu-src3",		1028,	MOD_CLK_ID(1017)),
283 	DEF_MOD("scu-src2",		1029,	MOD_CLK_ID(1017)),
284 	DEF_MOD("scu-src1",		1030,	MOD_CLK_ID(1017)),
285 	DEF_MOD("scu-src0",		1031,	MOD_CLK_ID(1017)),
286 };
287 
288 static const unsigned int r8a7795_crit_mod_clks[] __initconst = {
289 	MOD_CLK_ID(402),	/* RWDT */
290 	MOD_CLK_ID(408),	/* INTC-AP (GIC) */
291 };
292 
293 /*
294  * CPG Clock Data
295  */
296 
297 /*
298  *   MD		EXTAL		PLL0	PLL1	PLL2	PLL3	PLL4	OSC
299  * 14 13 19 17	(MHz)
300  *-------------------------------------------------------------------------
301  * 0  0  0  0	16.66 x 1	x180	x192	x144	x192	x144	/16
302  * 0  0  0  1	16.66 x 1	x180	x192	x144	x128	x144	/16
303  * 0  0  1  0	Prohibited setting
304  * 0  0  1  1	16.66 x 1	x180	x192	x144	x192	x144	/16
305  * 0  1  0  0	20    x 1	x150	x160	x120	x160	x120	/19
306  * 0  1  0  1	20    x 1	x150	x160	x120	x106	x120	/19
307  * 0  1  1  0	Prohibited setting
308  * 0  1  1  1	20    x 1	x150	x160	x120	x160	x120	/19
309  * 1  0  0  0	25    x 1	x120	x128	x96	x128	x96	/24
310  * 1  0  0  1	25    x 1	x120	x128	x96	x84	x96	/24
311  * 1  0  1  0	Prohibited setting
312  * 1  0  1  1	25    x 1	x120	x128	x96	x128	x96	/24
313  * 1  1  0  0	33.33 / 2	x180	x192	x144	x192	x144	/32
314  * 1  1  0  1	33.33 / 2	x180	x192	x144	x128	x144	/32
315  * 1  1  1  0	Prohibited setting
316  * 1  1  1  1	33.33 / 2	x180	x192	x144	x192	x144	/32
317  */
318 #define CPG_PLL_CONFIG_INDEX(md)	((((md) & BIT(14)) >> 11) | \
319 					 (((md) & BIT(13)) >> 11) | \
320 					 (((md) & BIT(19)) >> 18) | \
321 					 (((md) & BIT(17)) >> 17))
322 
323 static const struct rcar_gen3_cpg_pll_config cpg_pll_configs[16] __initconst = {
324 	/* EXTAL div	PLL1 mult/div	PLL3 mult/div	OSC prediv */
325 	{ 1,		192,	1,	192,	1,	16,	},
326 	{ 1,		192,	1,	128,	1,	16,	},
327 	{ 0, /* Prohibited setting */				},
328 	{ 1,		192,	1,	192,	1,	16,	},
329 	{ 1,		160,	1,	160,	1,	19,	},
330 	{ 1,		160,	1,	106,	1,	19,	},
331 	{ 0, /* Prohibited setting */				},
332 	{ 1,		160,	1,	160,	1,	19,	},
333 	{ 1,		128,	1,	128,	1,	24,	},
334 	{ 1,		128,	1,	84,	1,	24,	},
335 	{ 0, /* Prohibited setting */				},
336 	{ 1,		128,	1,	128,	1,	24,	},
337 	{ 2,		192,	1,	192,	1,	32,	},
338 	{ 2,		192,	1,	128,	1,	32,	},
339 	{ 0, /* Prohibited setting */				},
340 	{ 2,		192,	1,	192,	1,	32,	},
341 };
342 
343 static const struct soc_device_attribute r8a7795_denylist[] __initconst = {
344 	{ .soc_id = "r8a7795", .revision = "ES1.*" },
345 	{ /* sentinel */ }
346 };
347 
348 static int __init r8a7795_cpg_mssr_init(struct device *dev)
349 {
350 	const struct rcar_gen3_cpg_pll_config *cpg_pll_config;
351 	u32 cpg_mode;
352 	int error;
353 
354 	/*
355 	 * We panic here to ensure removed SoCs and clk updates are always in
356 	 * sync to avoid overclocking damages. The panic can only be seen with
357 	 * commandline args 'earlycon keep_bootcon'. But these SoCs were for
358 	 * developers only anyhow.
359 	 */
360 	if (soc_device_match(r8a7795_denylist))
361 		panic("SoC not supported anymore!\n");
362 
363 	error = rcar_rst_read_mode_pins(&cpg_mode);
364 	if (error)
365 		return error;
366 
367 	cpg_pll_config = &cpg_pll_configs[CPG_PLL_CONFIG_INDEX(cpg_mode)];
368 	if (!cpg_pll_config->extal_div) {
369 		dev_err(dev, "Prohibited setting (cpg_mode=0x%x)\n", cpg_mode);
370 		return -EINVAL;
371 	}
372 
373 	return rcar_gen3_cpg_init(cpg_pll_config, CLK_EXTALR, cpg_mode);
374 }
375 
376 const struct cpg_mssr_info r8a7795_cpg_mssr_info __initconst = {
377 	/* Core Clocks */
378 	.core_clks = r8a7795_core_clks,
379 	.num_core_clks = ARRAY_SIZE(r8a7795_core_clks),
380 	.last_dt_core_clk = LAST_DT_CORE_CLK,
381 	.num_total_core_clks = MOD_CLK_BASE,
382 
383 	/* Module Clocks */
384 	.mod_clks = r8a7795_mod_clks,
385 	.num_mod_clks = ARRAY_SIZE(r8a7795_mod_clks),
386 	.num_hw_mod_clks = 12 * 32,
387 
388 	/* Critical Module Clocks */
389 	.crit_mod_clks = r8a7795_crit_mod_clks,
390 	.num_crit_mod_clks = ARRAY_SIZE(r8a7795_crit_mod_clks),
391 
392 	/* Callbacks */
393 	.init = r8a7795_cpg_mssr_init,
394 	.cpg_clk_register = rcar_gen3_cpg_clk_register,
395 };
396