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[karo-tx-linux.git] / drivers / clk / renesas / r8a7795-cpg-mssr.c
1 /*
2  * r8a7795 Clock Pulse Generator / Module Standby and Software Reset
3  *
4  * Copyright (C) 2015 Glider bvba
5  *
6  * Based on clk-rcar-gen3.c
7  *
8  * Copyright (C) 2015 Renesas Electronics Corp.
9  *
10  * This program is free software; you can redistribute it and/or modify
11  * it under the terms of the GNU General Public License as published by
12  * the Free Software Foundation; version 2 of the License.
13  */
14
15 #include <linux/device.h>
16 #include <linux/init.h>
17 #include <linux/kernel.h>
18 #include <linux/soc/renesas/rcar-rst.h>
19
20 #include <dt-bindings/clock/r8a7795-cpg-mssr.h>
21
22 #include "renesas-cpg-mssr.h"
23 #include "rcar-gen3-cpg.h"
24
25 enum clk_ids {
26         /* Core Clock Outputs exported to DT */
27         LAST_DT_CORE_CLK = R8A7795_CLK_OSC,
28
29         /* External Input Clocks */
30         CLK_EXTAL,
31         CLK_EXTALR,
32
33         /* Internal Core Clocks */
34         CLK_MAIN,
35         CLK_PLL0,
36         CLK_PLL1,
37         CLK_PLL2,
38         CLK_PLL3,
39         CLK_PLL4,
40         CLK_PLL1_DIV2,
41         CLK_PLL1_DIV4,
42         CLK_S0,
43         CLK_S1,
44         CLK_S2,
45         CLK_S3,
46         CLK_SDSRC,
47         CLK_SSPSRC,
48         CLK_RINT,
49
50         /* Module Clocks */
51         MOD_CLK_BASE
52 };
53
54 static const struct cpg_core_clk r8a7795_core_clks[] __initconst = {
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         /* Core Clock Outputs */
76         DEF_FIXED("ztr",        R8A7795_CLK_ZTR,   CLK_PLL1_DIV2,  6, 1),
77         DEF_FIXED("ztrd2",      R8A7795_CLK_ZTRD2, CLK_PLL1_DIV2, 12, 1),
78         DEF_FIXED("zt",         R8A7795_CLK_ZT,    CLK_PLL1_DIV2,  4, 1),
79         DEF_FIXED("zx",         R8A7795_CLK_ZX,    CLK_PLL1_DIV2,  2, 1),
80         DEF_FIXED("s0d1",       R8A7795_CLK_S0D1,  CLK_S0,         1, 1),
81         DEF_FIXED("s0d4",       R8A7795_CLK_S0D4,  CLK_S0,         4, 1),
82         DEF_FIXED("s1d1",       R8A7795_CLK_S1D1,  CLK_S1,         1, 1),
83         DEF_FIXED("s1d2",       R8A7795_CLK_S1D2,  CLK_S1,         2, 1),
84         DEF_FIXED("s1d4",       R8A7795_CLK_S1D4,  CLK_S1,         4, 1),
85         DEF_FIXED("s2d1",       R8A7795_CLK_S2D1,  CLK_S2,         1, 1),
86         DEF_FIXED("s2d2",       R8A7795_CLK_S2D2,  CLK_S2,         2, 1),
87         DEF_FIXED("s2d4",       R8A7795_CLK_S2D4,  CLK_S2,         4, 1),
88         DEF_FIXED("s3d1",       R8A7795_CLK_S3D1,  CLK_S3,         1, 1),
89         DEF_FIXED("s3d2",       R8A7795_CLK_S3D2,  CLK_S3,         2, 1),
90         DEF_FIXED("s3d4",       R8A7795_CLK_S3D4,  CLK_S3,         4, 1),
91
92         DEF_GEN3_SD("sd0",      R8A7795_CLK_SD0,   CLK_SDSRC,     0x0074),
93         DEF_GEN3_SD("sd1",      R8A7795_CLK_SD1,   CLK_SDSRC,     0x0078),
94         DEF_GEN3_SD("sd2",      R8A7795_CLK_SD2,   CLK_SDSRC,     0x0268),
95         DEF_GEN3_SD("sd3",      R8A7795_CLK_SD3,   CLK_SDSRC,     0x026c),
96
97         DEF_FIXED("cl",         R8A7795_CLK_CL,    CLK_PLL1_DIV2, 48, 1),
98         DEF_FIXED("cp",         R8A7795_CLK_CP,    CLK_EXTAL,      2, 1),
99
100         DEF_DIV6P1("mso",       R8A7795_CLK_MSO,   CLK_PLL1_DIV4, 0x014),
101         DEF_DIV6P1("hdmi",      R8A7795_CLK_HDMI,  CLK_PLL1_DIV4, 0x250),
102         DEF_DIV6P1("canfd",     R8A7795_CLK_CANFD, CLK_PLL1_DIV4, 0x244),
103         DEF_DIV6P1("csi0",      R8A7795_CLK_CSI0,  CLK_PLL1_DIV4, 0x00c),
104
105         DEF_DIV6_RO("osc",      R8A7795_CLK_OSC,   CLK_EXTAL, CPG_RCKCR, 8),
106         DEF_DIV6_RO("r_int",    CLK_RINT,          CLK_EXTAL, CPG_RCKCR, 32),
107
108         DEF_BASE("r",           R8A7795_CLK_R, CLK_TYPE_GEN3_R, CLK_RINT),
109 };
110
111 static const struct mssr_mod_clk r8a7795_mod_clks[] __initconst = {
112         DEF_MOD("fdp1-2",                117,   R8A7795_CLK_S2D1),
113         DEF_MOD("fdp1-1",                118,   R8A7795_CLK_S2D1),
114         DEF_MOD("fdp1-0",                119,   R8A7795_CLK_S2D1),
115         DEF_MOD("scif5",                 202,   R8A7795_CLK_S3D4),
116         DEF_MOD("scif4",                 203,   R8A7795_CLK_S3D4),
117         DEF_MOD("scif3",                 204,   R8A7795_CLK_S3D4),
118         DEF_MOD("scif1",                 206,   R8A7795_CLK_S3D4),
119         DEF_MOD("scif0",                 207,   R8A7795_CLK_S3D4),
120         DEF_MOD("msiof3",                208,   R8A7795_CLK_MSO),
121         DEF_MOD("msiof2",                209,   R8A7795_CLK_MSO),
122         DEF_MOD("msiof1",                210,   R8A7795_CLK_MSO),
123         DEF_MOD("msiof0",                211,   R8A7795_CLK_MSO),
124         DEF_MOD("sys-dmac2",             217,   R8A7795_CLK_S3D1),
125         DEF_MOD("sys-dmac1",             218,   R8A7795_CLK_S3D1),
126         DEF_MOD("sys-dmac0",             219,   R8A7795_CLK_S3D1),
127         DEF_MOD("cmt3",                  300,   R8A7795_CLK_R),
128         DEF_MOD("cmt2",                  301,   R8A7795_CLK_R),
129         DEF_MOD("cmt1",                  302,   R8A7795_CLK_R),
130         DEF_MOD("cmt0",                  303,   R8A7795_CLK_R),
131         DEF_MOD("scif2",                 310,   R8A7795_CLK_S3D4),
132         DEF_MOD("sdif3",                 311,   R8A7795_CLK_SD3),
133         DEF_MOD("sdif2",                 312,   R8A7795_CLK_SD2),
134         DEF_MOD("sdif1",                 313,   R8A7795_CLK_SD1),
135         DEF_MOD("sdif0",                 314,   R8A7795_CLK_SD0),
136         DEF_MOD("pcie1",                 318,   R8A7795_CLK_S3D1),
137         DEF_MOD("pcie0",                 319,   R8A7795_CLK_S3D1),
138         DEF_MOD("usb3-if1",              327,   R8A7795_CLK_S3D1),
139         DEF_MOD("usb3-if0",              328,   R8A7795_CLK_S3D1),
140         DEF_MOD("usb-dmac0",             330,   R8A7795_CLK_S3D1),
141         DEF_MOD("usb-dmac1",             331,   R8A7795_CLK_S3D1),
142         DEF_MOD("rwdt0",                 402,   R8A7795_CLK_R),
143         DEF_MOD("intc-ex",               407,   R8A7795_CLK_CP),
144         DEF_MOD("intc-ap",               408,   R8A7795_CLK_S3D1),
145         DEF_MOD("audmac1",               501,   R8A7795_CLK_S3D1),
146         DEF_MOD("audmac0",               502,   R8A7795_CLK_S3D1),
147         DEF_MOD("drif7",                 508,   R8A7795_CLK_S3D2),
148         DEF_MOD("drif6",                 509,   R8A7795_CLK_S3D2),
149         DEF_MOD("drif5",                 510,   R8A7795_CLK_S3D2),
150         DEF_MOD("drif4",                 511,   R8A7795_CLK_S3D2),
151         DEF_MOD("drif3",                 512,   R8A7795_CLK_S3D2),
152         DEF_MOD("drif2",                 513,   R8A7795_CLK_S3D2),
153         DEF_MOD("drif1",                 514,   R8A7795_CLK_S3D2),
154         DEF_MOD("drif0",                 515,   R8A7795_CLK_S3D2),
155         DEF_MOD("hscif4",                516,   R8A7795_CLK_S3D1),
156         DEF_MOD("hscif3",                517,   R8A7795_CLK_S3D1),
157         DEF_MOD("hscif2",                518,   R8A7795_CLK_S3D1),
158         DEF_MOD("hscif1",                519,   R8A7795_CLK_S3D1),
159         DEF_MOD("hscif0",                520,   R8A7795_CLK_S3D1),
160         DEF_MOD("thermal",               522,   R8A7795_CLK_CP),
161         DEF_MOD("pwm",                   523,   R8A7795_CLK_S3D4),
162         DEF_MOD("fcpvd3",                600,   R8A7795_CLK_S2D1),
163         DEF_MOD("fcpvd2",                601,   R8A7795_CLK_S2D1),
164         DEF_MOD("fcpvd1",                602,   R8A7795_CLK_S2D1),
165         DEF_MOD("fcpvd0",                603,   R8A7795_CLK_S2D1),
166         DEF_MOD("fcpvb1",                606,   R8A7795_CLK_S2D1),
167         DEF_MOD("fcpvb0",                607,   R8A7795_CLK_S2D1),
168         DEF_MOD("fcpvi2",                609,   R8A7795_CLK_S2D1),
169         DEF_MOD("fcpvi1",                610,   R8A7795_CLK_S2D1),
170         DEF_MOD("fcpvi0",                611,   R8A7795_CLK_S2D1),
171         DEF_MOD("fcpf2",                 613,   R8A7795_CLK_S2D1),
172         DEF_MOD("fcpf1",                 614,   R8A7795_CLK_S2D1),
173         DEF_MOD("fcpf0",                 615,   R8A7795_CLK_S2D1),
174         DEF_MOD("fcpci1",                616,   R8A7795_CLK_S2D1),
175         DEF_MOD("fcpci0",                617,   R8A7795_CLK_S2D1),
176         DEF_MOD("fcpcs",                 619,   R8A7795_CLK_S2D1),
177         DEF_MOD("vspd3",                 620,   R8A7795_CLK_S2D1),
178         DEF_MOD("vspd2",                 621,   R8A7795_CLK_S2D1),
179         DEF_MOD("vspd1",                 622,   R8A7795_CLK_S2D1),
180         DEF_MOD("vspd0",                 623,   R8A7795_CLK_S2D1),
181         DEF_MOD("vspbc",                 624,   R8A7795_CLK_S2D1),
182         DEF_MOD("vspbd",                 626,   R8A7795_CLK_S2D1),
183         DEF_MOD("vspi2",                 629,   R8A7795_CLK_S2D1),
184         DEF_MOD("vspi1",                 630,   R8A7795_CLK_S2D1),
185         DEF_MOD("vspi0",                 631,   R8A7795_CLK_S2D1),
186         DEF_MOD("ehci2",                 701,   R8A7795_CLK_S3D4),
187         DEF_MOD("ehci1",                 702,   R8A7795_CLK_S3D4),
188         DEF_MOD("ehci0",                 703,   R8A7795_CLK_S3D4),
189         DEF_MOD("hsusb",                 704,   R8A7795_CLK_S3D4),
190         DEF_MOD("csi21",                 713,   R8A7795_CLK_CSI0),
191         DEF_MOD("csi20",                 714,   R8A7795_CLK_CSI0),
192         DEF_MOD("csi41",                 715,   R8A7795_CLK_CSI0),
193         DEF_MOD("csi40",                 716,   R8A7795_CLK_CSI0),
194         DEF_MOD("du3",                   721,   R8A7795_CLK_S2D1),
195         DEF_MOD("du2",                   722,   R8A7795_CLK_S2D1),
196         DEF_MOD("du1",                   723,   R8A7795_CLK_S2D1),
197         DEF_MOD("du0",                   724,   R8A7795_CLK_S2D1),
198         DEF_MOD("lvds",                  727,   R8A7795_CLK_S0D4),
199         DEF_MOD("hdmi1",                 728,   R8A7795_CLK_HDMI),
200         DEF_MOD("hdmi0",                 729,   R8A7795_CLK_HDMI),
201         DEF_MOD("vin7",                  804,   R8A7795_CLK_S2D1),
202         DEF_MOD("vin6",                  805,   R8A7795_CLK_S2D1),
203         DEF_MOD("vin5",                  806,   R8A7795_CLK_S2D1),
204         DEF_MOD("vin4",                  807,   R8A7795_CLK_S2D1),
205         DEF_MOD("vin3",                  808,   R8A7795_CLK_S2D1),
206         DEF_MOD("vin2",                  809,   R8A7795_CLK_S2D1),
207         DEF_MOD("vin1",                  810,   R8A7795_CLK_S2D1),
208         DEF_MOD("vin0",                  811,   R8A7795_CLK_S2D1),
209         DEF_MOD("etheravb",              812,   R8A7795_CLK_S3D2),
210         DEF_MOD("sata0",                 815,   R8A7795_CLK_S3D2),
211         DEF_MOD("imr3",                  820,   R8A7795_CLK_S2D1),
212         DEF_MOD("imr2",                  821,   R8A7795_CLK_S2D1),
213         DEF_MOD("imr1",                  822,   R8A7795_CLK_S2D1),
214         DEF_MOD("imr0",                  823,   R8A7795_CLK_S2D1),
215         DEF_MOD("gpio7",                 905,   R8A7795_CLK_CP),
216         DEF_MOD("gpio6",                 906,   R8A7795_CLK_CP),
217         DEF_MOD("gpio5",                 907,   R8A7795_CLK_CP),
218         DEF_MOD("gpio4",                 908,   R8A7795_CLK_CP),
219         DEF_MOD("gpio3",                 909,   R8A7795_CLK_CP),
220         DEF_MOD("gpio2",                 910,   R8A7795_CLK_CP),
221         DEF_MOD("gpio1",                 911,   R8A7795_CLK_CP),
222         DEF_MOD("gpio0",                 912,   R8A7795_CLK_CP),
223         DEF_MOD("can-fd",                914,   R8A7795_CLK_S3D2),
224         DEF_MOD("can-if1",               915,   R8A7795_CLK_S3D4),
225         DEF_MOD("can-if0",               916,   R8A7795_CLK_S3D4),
226         DEF_MOD("i2c6",                  918,   R8A7795_CLK_S3D2),
227         DEF_MOD("i2c5",                  919,   R8A7795_CLK_S3D2),
228         DEF_MOD("i2c-dvfs",              926,   R8A7795_CLK_CP),
229         DEF_MOD("i2c4",                  927,   R8A7795_CLK_S3D2),
230         DEF_MOD("i2c3",                  928,   R8A7795_CLK_S3D2),
231         DEF_MOD("i2c2",                  929,   R8A7795_CLK_S3D2),
232         DEF_MOD("i2c1",                  930,   R8A7795_CLK_S3D2),
233         DEF_MOD("i2c0",                  931,   R8A7795_CLK_S3D2),
234         DEF_MOD("ssi-all",              1005,   R8A7795_CLK_S3D4),
235         DEF_MOD("ssi9",                 1006,   MOD_CLK_ID(1005)),
236         DEF_MOD("ssi8",                 1007,   MOD_CLK_ID(1005)),
237         DEF_MOD("ssi7",                 1008,   MOD_CLK_ID(1005)),
238         DEF_MOD("ssi6",                 1009,   MOD_CLK_ID(1005)),
239         DEF_MOD("ssi5",                 1010,   MOD_CLK_ID(1005)),
240         DEF_MOD("ssi4",                 1011,   MOD_CLK_ID(1005)),
241         DEF_MOD("ssi3",                 1012,   MOD_CLK_ID(1005)),
242         DEF_MOD("ssi2",                 1013,   MOD_CLK_ID(1005)),
243         DEF_MOD("ssi1",                 1014,   MOD_CLK_ID(1005)),
244         DEF_MOD("ssi0",                 1015,   MOD_CLK_ID(1005)),
245         DEF_MOD("scu-all",              1017,   R8A7795_CLK_S3D4),
246         DEF_MOD("scu-dvc1",             1018,   MOD_CLK_ID(1017)),
247         DEF_MOD("scu-dvc0",             1019,   MOD_CLK_ID(1017)),
248         DEF_MOD("scu-ctu1-mix1",        1020,   MOD_CLK_ID(1017)),
249         DEF_MOD("scu-ctu0-mix0",        1021,   MOD_CLK_ID(1017)),
250         DEF_MOD("scu-src9",             1022,   MOD_CLK_ID(1017)),
251         DEF_MOD("scu-src8",             1023,   MOD_CLK_ID(1017)),
252         DEF_MOD("scu-src7",             1024,   MOD_CLK_ID(1017)),
253         DEF_MOD("scu-src6",             1025,   MOD_CLK_ID(1017)),
254         DEF_MOD("scu-src5",             1026,   MOD_CLK_ID(1017)),
255         DEF_MOD("scu-src4",             1027,   MOD_CLK_ID(1017)),
256         DEF_MOD("scu-src3",             1028,   MOD_CLK_ID(1017)),
257         DEF_MOD("scu-src2",             1029,   MOD_CLK_ID(1017)),
258         DEF_MOD("scu-src1",             1030,   MOD_CLK_ID(1017)),
259         DEF_MOD("scu-src0",             1031,   MOD_CLK_ID(1017)),
260 };
261
262 static const unsigned int r8a7795_crit_mod_clks[] __initconst = {
263         MOD_CLK_ID(408),        /* INTC-AP (GIC) */
264 };
265
266
267 /*
268  * CPG Clock Data
269  */
270
271 /*
272  *   MD         EXTAL           PLL0    PLL1    PLL2    PLL3    PLL4
273  * 14 13 19 17  (MHz)
274  *-------------------------------------------------------------------
275  * 0  0  0  0   16.66 x 1       x180    x192    x144    x192    x144
276  * 0  0  0  1   16.66 x 1       x180    x192    x144    x128    x144
277  * 0  0  1  0   Prohibited setting
278  * 0  0  1  1   16.66 x 1       x180    x192    x144    x192    x144
279  * 0  1  0  0   20    x 1       x150    x160    x120    x160    x120
280  * 0  1  0  1   20    x 1       x150    x160    x120    x106    x120
281  * 0  1  1  0   Prohibited setting
282  * 0  1  1  1   20    x 1       x150    x160    x120    x160    x120
283  * 1  0  0  0   25    x 1       x120    x128    x96     x128    x96
284  * 1  0  0  1   25    x 1       x120    x128    x96     x84     x96
285  * 1  0  1  0   Prohibited setting
286  * 1  0  1  1   25    x 1       x120    x128    x96     x128    x96
287  * 1  1  0  0   33.33 / 2       x180    x192    x144    x192    x144
288  * 1  1  0  1   33.33 / 2       x180    x192    x144    x128    x144
289  * 1  1  1  0   Prohibited setting
290  * 1  1  1  1   33.33 / 2       x180    x192    x144    x192    x144
291  */
292 #define CPG_PLL_CONFIG_INDEX(md)        ((((md) & BIT(14)) >> 11) | \
293                                          (((md) & BIT(13)) >> 11) | \
294                                          (((md) & BIT(19)) >> 18) | \
295                                          (((md) & BIT(17)) >> 17))
296
297 static const struct rcar_gen3_cpg_pll_config cpg_pll_configs[16] __initconst = {
298         /* EXTAL div    PLL1 mult       PLL3 mult */
299         { 1,            192,            192,    },
300         { 1,            192,            128,    },
301         { 0, /* Prohibited setting */           },
302         { 1,            192,            192,    },
303         { 1,            160,            160,    },
304         { 1,            160,            106,    },
305         { 0, /* Prohibited setting */           },
306         { 1,            160,            160,    },
307         { 1,            128,            128,    },
308         { 1,            128,            84,     },
309         { 0, /* Prohibited setting */           },
310         { 1,            128,            128,    },
311         { 2,            192,            192,    },
312         { 2,            192,            128,    },
313         { 0, /* Prohibited setting */           },
314         { 2,            192,            192,    },
315 };
316
317 static int __init r8a7795_cpg_mssr_init(struct device *dev)
318 {
319         const struct rcar_gen3_cpg_pll_config *cpg_pll_config;
320         u32 cpg_mode;
321         int error;
322
323         error = rcar_rst_read_mode_pins(&cpg_mode);
324         if (error)
325                 return error;
326
327         cpg_pll_config = &cpg_pll_configs[CPG_PLL_CONFIG_INDEX(cpg_mode)];
328         if (!cpg_pll_config->extal_div) {
329                 dev_err(dev, "Prohibited setting (cpg_mode=0x%x)\n", cpg_mode);
330                 return -EINVAL;
331         }
332
333         return rcar_gen3_cpg_init(cpg_pll_config, CLK_EXTALR);
334 }
335
336 const struct cpg_mssr_info r8a7795_cpg_mssr_info __initconst = {
337         /* Core Clocks */
338         .core_clks = r8a7795_core_clks,
339         .num_core_clks = ARRAY_SIZE(r8a7795_core_clks),
340         .last_dt_core_clk = LAST_DT_CORE_CLK,
341         .num_total_core_clks = MOD_CLK_BASE,
342
343         /* Module Clocks */
344         .mod_clks = r8a7795_mod_clks,
345         .num_mod_clks = ARRAY_SIZE(r8a7795_mod_clks),
346         .num_hw_mod_clks = 12 * 32,
347
348         /* Critical Module Clocks */
349         .crit_mod_clks = r8a7795_crit_mod_clks,
350         .num_crit_mod_clks = ARRAY_SIZE(r8a7795_crit_mod_clks),
351
352         /* Callbacks */
353         .init = r8a7795_cpg_mssr_init,
354         .cpg_clk_register = rcar_gen3_cpg_clk_register,
355 };