Linux-libre 5.4.49-gnu
[librecmc/linux-libre.git] / drivers / clk / renesas / r8a7796-cpg-mssr.c
1 // SPDX-License-Identifier: GPL-2.0
2 /*
3  * r8a7796 Clock Pulse Generator / Module Standby and Software Reset
4  *
5  * Copyright (C) 2016 Glider bvba
6  * Copyright (C) 2018 Renesas Electronics Corp.
7  *
8  * Based on r8a7795-cpg-mssr.c
9  *
10  * Copyright (C) 2015 Glider bvba
11  * Copyright (C) 2015 Renesas Electronics Corp.
12  */
13
14 #include <linux/device.h>
15 #include <linux/init.h>
16 #include <linux/kernel.h>
17 #include <linux/soc/renesas/rcar-rst.h>
18
19 #include <dt-bindings/clock/r8a7796-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 = R8A7796_CLK_OSC,
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_RINT,
48
49         /* Module Clocks */
50         MOD_CLK_BASE
51 };
52
53 static const struct cpg_core_clk r8a7796_core_clks[] __initconst = {
54         /* External Clock Inputs */
55         DEF_INPUT("extal",      CLK_EXTAL),
56         DEF_INPUT("extalr",     CLK_EXTALR),
57
58         /* Internal Core Clocks */
59         DEF_BASE(".main",       CLK_MAIN, CLK_TYPE_GEN3_MAIN, CLK_EXTAL),
60         DEF_BASE(".pll0",       CLK_PLL0, CLK_TYPE_GEN3_PLL0, CLK_MAIN),
61         DEF_BASE(".pll1",       CLK_PLL1, CLK_TYPE_GEN3_PLL1, CLK_MAIN),
62         DEF_BASE(".pll2",       CLK_PLL2, CLK_TYPE_GEN3_PLL2, CLK_MAIN),
63         DEF_BASE(".pll3",       CLK_PLL3, CLK_TYPE_GEN3_PLL3, CLK_MAIN),
64         DEF_BASE(".pll4",       CLK_PLL4, CLK_TYPE_GEN3_PLL4, CLK_MAIN),
65
66         DEF_FIXED(".pll1_div2", CLK_PLL1_DIV2,     CLK_PLL1,       2, 1),
67         DEF_FIXED(".pll1_div4", CLK_PLL1_DIV4,     CLK_PLL1_DIV2,  2, 1),
68         DEF_FIXED(".s0",        CLK_S0,            CLK_PLL1_DIV2,  2, 1),
69         DEF_FIXED(".s1",        CLK_S1,            CLK_PLL1_DIV2,  3, 1),
70         DEF_FIXED(".s2",        CLK_S2,            CLK_PLL1_DIV2,  4, 1),
71         DEF_FIXED(".s3",        CLK_S3,            CLK_PLL1_DIV2,  6, 1),
72         DEF_FIXED(".sdsrc",     CLK_SDSRC,         CLK_PLL1_DIV2,  2, 1),
73
74         DEF_GEN3_OSC(".r",      CLK_RINT,          CLK_EXTAL,      32),
75
76         /* Core Clock Outputs */
77         DEF_GEN3_Z("z",         R8A7796_CLK_Z,     CLK_TYPE_GEN3_Z,  CLK_PLL0, 2, 8),
78         DEF_GEN3_Z("z2",        R8A7796_CLK_Z2,    CLK_TYPE_GEN3_Z,  CLK_PLL2, 2, 0),
79         DEF_FIXED("ztr",        R8A7796_CLK_ZTR,   CLK_PLL1_DIV2,  6, 1),
80         DEF_FIXED("ztrd2",      R8A7796_CLK_ZTRD2, CLK_PLL1_DIV2, 12, 1),
81         DEF_FIXED("zt",         R8A7796_CLK_ZT,    CLK_PLL1_DIV2,  4, 1),
82         DEF_FIXED("zx",         R8A7796_CLK_ZX,    CLK_PLL1_DIV2,  2, 1),
83         DEF_FIXED("s0d1",       R8A7796_CLK_S0D1,  CLK_S0,         1, 1),
84         DEF_FIXED("s0d2",       R8A7796_CLK_S0D2,  CLK_S0,         2, 1),
85         DEF_FIXED("s0d3",       R8A7796_CLK_S0D3,  CLK_S0,         3, 1),
86         DEF_FIXED("s0d4",       R8A7796_CLK_S0D4,  CLK_S0,         4, 1),
87         DEF_FIXED("s0d6",       R8A7796_CLK_S0D6,  CLK_S0,         6, 1),
88         DEF_FIXED("s0d8",       R8A7796_CLK_S0D8,  CLK_S0,         8, 1),
89         DEF_FIXED("s0d12",      R8A7796_CLK_S0D12, CLK_S0,        12, 1),
90         DEF_FIXED("s1d1",       R8A7796_CLK_S1D1,  CLK_S1,         1, 1),
91         DEF_FIXED("s1d2",       R8A7796_CLK_S1D2,  CLK_S1,         2, 1),
92         DEF_FIXED("s1d4",       R8A7796_CLK_S1D4,  CLK_S1,         4, 1),
93         DEF_FIXED("s2d1",       R8A7796_CLK_S2D1,  CLK_S2,         1, 1),
94         DEF_FIXED("s2d2",       R8A7796_CLK_S2D2,  CLK_S2,         2, 1),
95         DEF_FIXED("s2d4",       R8A7796_CLK_S2D4,  CLK_S2,         4, 1),
96         DEF_FIXED("s3d1",       R8A7796_CLK_S3D1,  CLK_S3,         1, 1),
97         DEF_FIXED("s3d2",       R8A7796_CLK_S3D2,  CLK_S3,         2, 1),
98         DEF_FIXED("s3d4",       R8A7796_CLK_S3D4,  CLK_S3,         4, 1),
99
100         DEF_GEN3_SD("sd0",      R8A7796_CLK_SD0,   CLK_SDSRC,     0x074),
101         DEF_GEN3_SD("sd1",      R8A7796_CLK_SD1,   CLK_SDSRC,     0x078),
102         DEF_GEN3_SD("sd2",      R8A7796_CLK_SD2,   CLK_SDSRC,     0x268),
103         DEF_GEN3_SD("sd3",      R8A7796_CLK_SD3,   CLK_SDSRC,     0x26c),
104
105         DEF_FIXED("cl",         R8A7796_CLK_CL,    CLK_PLL1_DIV2, 48, 1),
106         DEF_FIXED("cp",         R8A7796_CLK_CP,    CLK_EXTAL,      2, 1),
107         DEF_FIXED("cpex",       R8A7796_CLK_CPEX,  CLK_EXTAL,      2, 1),
108
109         DEF_DIV6P1("canfd",     R8A7796_CLK_CANFD, CLK_PLL1_DIV4, 0x244),
110         DEF_DIV6P1("csi0",      R8A7796_CLK_CSI0,  CLK_PLL1_DIV4, 0x00c),
111         DEF_DIV6P1("mso",       R8A7796_CLK_MSO,   CLK_PLL1_DIV4, 0x014),
112         DEF_DIV6P1("hdmi",      R8A7796_CLK_HDMI,  CLK_PLL1_DIV4, 0x250),
113
114         DEF_GEN3_OSC("osc",     R8A7796_CLK_OSC,   CLK_EXTAL,     8),
115
116         DEF_BASE("r",           R8A7796_CLK_R,     CLK_TYPE_GEN3_R, CLK_RINT),
117 };
118
119 static const struct mssr_mod_clk r8a7796_mod_clks[] __initconst = {
120         DEF_MOD("fdp1-0",                119,   R8A7796_CLK_S0D1),
121         DEF_MOD("scif5",                 202,   R8A7796_CLK_S3D4),
122         DEF_MOD("scif4",                 203,   R8A7796_CLK_S3D4),
123         DEF_MOD("scif3",                 204,   R8A7796_CLK_S3D4),
124         DEF_MOD("scif1",                 206,   R8A7796_CLK_S3D4),
125         DEF_MOD("scif0",                 207,   R8A7796_CLK_S3D4),
126         DEF_MOD("msiof3",                208,   R8A7796_CLK_MSO),
127         DEF_MOD("msiof2",                209,   R8A7796_CLK_MSO),
128         DEF_MOD("msiof1",                210,   R8A7796_CLK_MSO),
129         DEF_MOD("msiof0",                211,   R8A7796_CLK_MSO),
130         DEF_MOD("sys-dmac2",             217,   R8A7796_CLK_S3D1),
131         DEF_MOD("sys-dmac1",             218,   R8A7796_CLK_S3D1),
132         DEF_MOD("sys-dmac0",             219,   R8A7796_CLK_S0D3),
133         DEF_MOD("cmt3",                  300,   R8A7796_CLK_R),
134         DEF_MOD("cmt2",                  301,   R8A7796_CLK_R),
135         DEF_MOD("cmt1",                  302,   R8A7796_CLK_R),
136         DEF_MOD("cmt0",                  303,   R8A7796_CLK_R),
137         DEF_MOD("tpu0",                  304,   R8A7796_CLK_S3D4),
138         DEF_MOD("scif2",                 310,   R8A7796_CLK_S3D4),
139         DEF_MOD("sdif3",                 311,   R8A7796_CLK_SD3),
140         DEF_MOD("sdif2",                 312,   R8A7796_CLK_SD2),
141         DEF_MOD("sdif1",                 313,   R8A7796_CLK_SD1),
142         DEF_MOD("sdif0",                 314,   R8A7796_CLK_SD0),
143         DEF_MOD("pcie1",                 318,   R8A7796_CLK_S3D1),
144         DEF_MOD("pcie0",                 319,   R8A7796_CLK_S3D1),
145         DEF_MOD("usb3-if0",              328,   R8A7796_CLK_S3D1),
146         DEF_MOD("usb-dmac0",             330,   R8A7796_CLK_S3D1),
147         DEF_MOD("usb-dmac1",             331,   R8A7796_CLK_S3D1),
148         DEF_MOD("rwdt",                  402,   R8A7796_CLK_R),
149         DEF_MOD("intc-ex",               407,   R8A7796_CLK_CP),
150         DEF_MOD("intc-ap",               408,   R8A7796_CLK_S0D3),
151         DEF_MOD("audmac1",               501,   R8A7796_CLK_S1D2),
152         DEF_MOD("audmac0",               502,   R8A7796_CLK_S1D2),
153         DEF_MOD("drif31",                508,   R8A7796_CLK_S3D2),
154         DEF_MOD("drif30",                509,   R8A7796_CLK_S3D2),
155         DEF_MOD("drif21",                510,   R8A7796_CLK_S3D2),
156         DEF_MOD("drif20",                511,   R8A7796_CLK_S3D2),
157         DEF_MOD("drif11",                512,   R8A7796_CLK_S3D2),
158         DEF_MOD("drif10",                513,   R8A7796_CLK_S3D2),
159         DEF_MOD("drif01",                514,   R8A7796_CLK_S3D2),
160         DEF_MOD("drif00",                515,   R8A7796_CLK_S3D2),
161         DEF_MOD("hscif4",                516,   R8A7796_CLK_S3D1),
162         DEF_MOD("hscif3",                517,   R8A7796_CLK_S3D1),
163         DEF_MOD("hscif2",                518,   R8A7796_CLK_S3D1),
164         DEF_MOD("hscif1",                519,   R8A7796_CLK_S3D1),
165         DEF_MOD("hscif0",                520,   R8A7796_CLK_S3D1),
166         DEF_MOD("thermal",               522,   R8A7796_CLK_CP),
167         DEF_MOD("pwm",                   523,   R8A7796_CLK_S0D12),
168         DEF_MOD("fcpvd2",                601,   R8A7796_CLK_S0D2),
169         DEF_MOD("fcpvd1",                602,   R8A7796_CLK_S0D2),
170         DEF_MOD("fcpvd0",                603,   R8A7796_CLK_S0D2),
171         DEF_MOD("fcpvb0",                607,   R8A7796_CLK_S0D1),
172         DEF_MOD("fcpvi0",                611,   R8A7796_CLK_S0D1),
173         DEF_MOD("fcpf0",                 615,   R8A7796_CLK_S0D1),
174         DEF_MOD("fcpci0",                617,   R8A7796_CLK_S0D2),
175         DEF_MOD("fcpcs",                 619,   R8A7796_CLK_S0D2),
176         DEF_MOD("vspd2",                 621,   R8A7796_CLK_S0D2),
177         DEF_MOD("vspd1",                 622,   R8A7796_CLK_S0D2),
178         DEF_MOD("vspd0",                 623,   R8A7796_CLK_S0D2),
179         DEF_MOD("vspb",                  626,   R8A7796_CLK_S0D1),
180         DEF_MOD("vspi0",                 631,   R8A7796_CLK_S0D1),
181         DEF_MOD("ehci1",                 702,   R8A7796_CLK_S3D2),
182         DEF_MOD("ehci0",                 703,   R8A7796_CLK_S3D2),
183         DEF_MOD("hsusb",                 704,   R8A7796_CLK_S3D2),
184         DEF_MOD("cmm2",                  709,   R8A7796_CLK_S2D1),
185         DEF_MOD("cmm1",                  710,   R8A7796_CLK_S2D1),
186         DEF_MOD("cmm0",                  711,   R8A7796_CLK_S2D1),
187         DEF_MOD("csi20",                 714,   R8A7796_CLK_CSI0),
188         DEF_MOD("csi40",                 716,   R8A7796_CLK_CSI0),
189         DEF_MOD("du2",                   722,   R8A7796_CLK_S2D1),
190         DEF_MOD("du1",                   723,   R8A7796_CLK_S2D1),
191         DEF_MOD("du0",                   724,   R8A7796_CLK_S2D1),
192         DEF_MOD("lvds",                  727,   R8A7796_CLK_S2D1),
193         DEF_MOD("hdmi0",                 729,   R8A7796_CLK_HDMI),
194         DEF_MOD("vin7",                  804,   R8A7796_CLK_S0D2),
195         DEF_MOD("vin6",                  805,   R8A7796_CLK_S0D2),
196         DEF_MOD("vin5",                  806,   R8A7796_CLK_S0D2),
197         DEF_MOD("vin4",                  807,   R8A7796_CLK_S0D2),
198         DEF_MOD("vin3",                  808,   R8A7796_CLK_S0D2),
199         DEF_MOD("vin2",                  809,   R8A7796_CLK_S0D2),
200         DEF_MOD("vin1",                  810,   R8A7796_CLK_S0D2),
201         DEF_MOD("vin0",                  811,   R8A7796_CLK_S0D2),
202         DEF_MOD("etheravb",              812,   R8A7796_CLK_S0D6),
203         DEF_MOD("imr1",                  822,   R8A7796_CLK_S0D2),
204         DEF_MOD("imr0",                  823,   R8A7796_CLK_S0D2),
205         DEF_MOD("gpio7",                 905,   R8A7796_CLK_S3D4),
206         DEF_MOD("gpio6",                 906,   R8A7796_CLK_S3D4),
207         DEF_MOD("gpio5",                 907,   R8A7796_CLK_S3D4),
208         DEF_MOD("gpio4",                 908,   R8A7796_CLK_S3D4),
209         DEF_MOD("gpio3",                 909,   R8A7796_CLK_S3D4),
210         DEF_MOD("gpio2",                 910,   R8A7796_CLK_S3D4),
211         DEF_MOD("gpio1",                 911,   R8A7796_CLK_S3D4),
212         DEF_MOD("gpio0",                 912,   R8A7796_CLK_S3D4),
213         DEF_MOD("can-fd",                914,   R8A7796_CLK_S3D2),
214         DEF_MOD("can-if1",               915,   R8A7796_CLK_S3D4),
215         DEF_MOD("can-if0",               916,   R8A7796_CLK_S3D4),
216         DEF_MOD("i2c6",                  918,   R8A7796_CLK_S0D6),
217         DEF_MOD("i2c5",                  919,   R8A7796_CLK_S0D6),
218         DEF_MOD("i2c-dvfs",              926,   R8A7796_CLK_CP),
219         DEF_MOD("i2c4",                  927,   R8A7796_CLK_S0D6),
220         DEF_MOD("i2c3",                  928,   R8A7796_CLK_S0D6),
221         DEF_MOD("i2c2",                  929,   R8A7796_CLK_S3D2),
222         DEF_MOD("i2c1",                  930,   R8A7796_CLK_S3D2),
223         DEF_MOD("i2c0",                  931,   R8A7796_CLK_S3D2),
224         DEF_MOD("ssi-all",              1005,   R8A7796_CLK_S3D4),
225         DEF_MOD("ssi9",                 1006,   MOD_CLK_ID(1005)),
226         DEF_MOD("ssi8",                 1007,   MOD_CLK_ID(1005)),
227         DEF_MOD("ssi7",                 1008,   MOD_CLK_ID(1005)),
228         DEF_MOD("ssi6",                 1009,   MOD_CLK_ID(1005)),
229         DEF_MOD("ssi5",                 1010,   MOD_CLK_ID(1005)),
230         DEF_MOD("ssi4",                 1011,   MOD_CLK_ID(1005)),
231         DEF_MOD("ssi3",                 1012,   MOD_CLK_ID(1005)),
232         DEF_MOD("ssi2",                 1013,   MOD_CLK_ID(1005)),
233         DEF_MOD("ssi1",                 1014,   MOD_CLK_ID(1005)),
234         DEF_MOD("ssi0",                 1015,   MOD_CLK_ID(1005)),
235         DEF_MOD("scu-all",              1017,   R8A7796_CLK_S3D4),
236         DEF_MOD("scu-dvc1",             1018,   MOD_CLK_ID(1017)),
237         DEF_MOD("scu-dvc0",             1019,   MOD_CLK_ID(1017)),
238         DEF_MOD("scu-ctu1-mix1",        1020,   MOD_CLK_ID(1017)),
239         DEF_MOD("scu-ctu0-mix0",        1021,   MOD_CLK_ID(1017)),
240         DEF_MOD("scu-src9",             1022,   MOD_CLK_ID(1017)),
241         DEF_MOD("scu-src8",             1023,   MOD_CLK_ID(1017)),
242         DEF_MOD("scu-src7",             1024,   MOD_CLK_ID(1017)),
243         DEF_MOD("scu-src6",             1025,   MOD_CLK_ID(1017)),
244         DEF_MOD("scu-src5",             1026,   MOD_CLK_ID(1017)),
245         DEF_MOD("scu-src4",             1027,   MOD_CLK_ID(1017)),
246         DEF_MOD("scu-src3",             1028,   MOD_CLK_ID(1017)),
247         DEF_MOD("scu-src2",             1029,   MOD_CLK_ID(1017)),
248         DEF_MOD("scu-src1",             1030,   MOD_CLK_ID(1017)),
249         DEF_MOD("scu-src0",             1031,   MOD_CLK_ID(1017)),
250 };
251
252 static const unsigned int r8a7796_crit_mod_clks[] __initconst = {
253         MOD_CLK_ID(408),        /* INTC-AP (GIC) */
254 };
255
256
257 /*
258  * CPG Clock Data
259  */
260
261 /*
262  *   MD         EXTAL           PLL0    PLL1    PLL2    PLL3    PLL4    OSC
263  * 14 13 19 17  (MHz)
264  *-------------------------------------------------------------------------
265  * 0  0  0  0   16.66 x 1       x180    x192    x144    x192    x144    /16
266  * 0  0  0  1   16.66 x 1       x180    x192    x144    x128    x144    /16
267  * 0  0  1  0   Prohibited setting
268  * 0  0  1  1   16.66 x 1       x180    x192    x144    x192    x144    /16
269  * 0  1  0  0   20    x 1       x150    x160    x120    x160    x120    /19
270  * 0  1  0  1   20    x 1       x150    x160    x120    x106    x120    /19
271  * 0  1  1  0   Prohibited setting
272  * 0  1  1  1   20    x 1       x150    x160    x120    x160    x120    /19
273  * 1  0  0  0   25    x 1       x120    x128    x96     x128    x96     /24
274  * 1  0  0  1   25    x 1       x120    x128    x96     x84     x96     /24
275  * 1  0  1  0   Prohibited setting
276  * 1  0  1  1   25    x 1       x120    x128    x96     x128    x96     /24
277  * 1  1  0  0   33.33 / 2       x180    x192    x144    x192    x144    /32
278  * 1  1  0  1   33.33 / 2       x180    x192    x144    x128    x144    /32
279  * 1  1  1  0   Prohibited setting
280  * 1  1  1  1   33.33 / 2       x180    x192    x144    x192    x144    /32
281  */
282 #define CPG_PLL_CONFIG_INDEX(md)        ((((md) & BIT(14)) >> 11) | \
283                                          (((md) & BIT(13)) >> 11) | \
284                                          (((md) & BIT(19)) >> 18) | \
285                                          (((md) & BIT(17)) >> 17))
286
287 static const struct rcar_gen3_cpg_pll_config cpg_pll_configs[16] __initconst = {
288         /* EXTAL div    PLL1 mult/div   PLL3 mult/div   OSC prediv */
289         { 1,            192,    1,      192,    1,      16,     },
290         { 1,            192,    1,      128,    1,      16,     },
291         { 0, /* Prohibited setting */                           },
292         { 1,            192,    1,      192,    1,      16,     },
293         { 1,            160,    1,      160,    1,      19,     },
294         { 1,            160,    1,      106,    1,      19,     },
295         { 0, /* Prohibited setting */                           },
296         { 1,            160,    1,      160,    1,      19,     },
297         { 1,            128,    1,      128,    1,      24,     },
298         { 1,            128,    1,      84,     1,      24,     },
299         { 0, /* Prohibited setting */                           },
300         { 1,            128,    1,      128,    1,      24,     },
301         { 2,            192,    1,      192,    1,      32,     },
302         { 2,            192,    1,      128,    1,      32,     },
303         { 0, /* Prohibited setting */                           },
304         { 2,            192,    1,      192,    1,      32,     },
305 };
306
307 static int __init r8a7796_cpg_mssr_init(struct device *dev)
308 {
309         const struct rcar_gen3_cpg_pll_config *cpg_pll_config;
310         u32 cpg_mode;
311         int error;
312
313         error = rcar_rst_read_mode_pins(&cpg_mode);
314         if (error)
315                 return error;
316
317         cpg_pll_config = &cpg_pll_configs[CPG_PLL_CONFIG_INDEX(cpg_mode)];
318         if (!cpg_pll_config->extal_div) {
319                 dev_err(dev, "Prohibited setting (cpg_mode=0x%x)\n", cpg_mode);
320                 return -EINVAL;
321         }
322
323         return rcar_gen3_cpg_init(cpg_pll_config, CLK_EXTALR, cpg_mode);
324 }
325
326 const struct cpg_mssr_info r8a7796_cpg_mssr_info __initconst = {
327         /* Core Clocks */
328         .core_clks = r8a7796_core_clks,
329         .num_core_clks = ARRAY_SIZE(r8a7796_core_clks),
330         .last_dt_core_clk = LAST_DT_CORE_CLK,
331         .num_total_core_clks = MOD_CLK_BASE,
332
333         /* Module Clocks */
334         .mod_clks = r8a7796_mod_clks,
335         .num_mod_clks = ARRAY_SIZE(r8a7796_mod_clks),
336         .num_hw_mod_clks = 12 * 32,
337
338         /* Critical Module Clocks */
339         .crit_mod_clks = r8a7796_crit_mod_clks,
340         .num_crit_mod_clks = ARRAY_SIZE(r8a7796_crit_mod_clks),
341
342         /* Callbacks */
343         .init = r8a7796_cpg_mssr_init,
344         .cpg_clk_register = rcar_gen3_cpg_clk_register,
345 };