GNU Linux-libre 6.8.9-gnu
[releases.git] / drivers / clk / renesas / r8a779g0-cpg-mssr.c
1 // SPDX-License-Identifier: GPL-2.0
2 /*
3  * r8a779g0 Clock Pulse Generator / Module Standby and Software Reset
4  *
5  * Copyright (C) 2022 Renesas Electronics Corp.
6  *
7  * Based on r8a779f0-cpg-mssr.c
8  */
9
10 #include <linux/bitfield.h>
11 #include <linux/clk.h>
12 #include <linux/clk-provider.h>
13 #include <linux/device.h>
14 #include <linux/err.h>
15 #include <linux/kernel.h>
16 #include <linux/soc/renesas/rcar-rst.h>
17
18 #include <dt-bindings/clock/r8a779g0-cpg-mssr.h>
19
20 #include "renesas-cpg-mssr.h"
21 #include "rcar-gen4-cpg.h"
22
23 enum clk_ids {
24         /* Core Clock Outputs exported to DT */
25         LAST_DT_CORE_CLK = R8A779G0_CLK_CP,
26
27         /* External Input Clocks */
28         CLK_EXTAL,
29         CLK_EXTALR,
30
31         /* Internal Core Clocks */
32         CLK_MAIN,
33         CLK_PLL1,
34         CLK_PLL2,
35         CLK_PLL3,
36         CLK_PLL4,
37         CLK_PLL5,
38         CLK_PLL6,
39         CLK_PLL1_DIV2,
40         CLK_PLL2_DIV2,
41         CLK_PLL3_DIV2,
42         CLK_PLL4_DIV2,
43         CLK_PLL5_DIV2,
44         CLK_PLL5_DIV4,
45         CLK_PLL6_DIV2,
46         CLK_S0,
47         CLK_S0_VIO,
48         CLK_S0_VC,
49         CLK_S0_HSC,
50         CLK_SASYNCPER,
51         CLK_SV_VIP,
52         CLK_SV_IR,
53         CLK_SDSRC,
54         CLK_RPCSRC,
55         CLK_VIO,
56         CLK_VC,
57         CLK_OCO,
58
59         /* Module Clocks */
60         MOD_CLK_BASE
61 };
62
63 static const struct cpg_core_clk r8a779g0_core_clks[] __initconst = {
64         /* External Clock Inputs */
65         DEF_INPUT("extal",      CLK_EXTAL),
66         DEF_INPUT("extalr",     CLK_EXTALR),
67
68         /* Internal Core Clocks */
69         DEF_BASE(".main", CLK_MAIN,     CLK_TYPE_GEN4_MAIN,     CLK_EXTAL),
70         DEF_BASE(".pll1", CLK_PLL1,     CLK_TYPE_GEN4_PLL1,     CLK_MAIN),
71         DEF_BASE(".pll2", CLK_PLL2,     CLK_TYPE_GEN4_PLL2_VAR, CLK_MAIN),
72         DEF_BASE(".pll3", CLK_PLL3,     CLK_TYPE_GEN4_PLL3,     CLK_MAIN),
73         DEF_BASE(".pll4", CLK_PLL4,     CLK_TYPE_GEN4_PLL4,     CLK_MAIN),
74         DEF_BASE(".pll5", CLK_PLL5,     CLK_TYPE_GEN4_PLL5,     CLK_MAIN),
75         DEF_BASE(".pll6", CLK_PLL6,     CLK_TYPE_GEN4_PLL6,     CLK_MAIN),
76
77         DEF_FIXED(".pll1_div2", CLK_PLL1_DIV2,  CLK_PLL1,       2, 1),
78         DEF_FIXED(".pll2_div2", CLK_PLL2_DIV2,  CLK_PLL2,       2, 1),
79         DEF_FIXED(".pll3_div2", CLK_PLL3_DIV2,  CLK_PLL3,       2, 1),
80         DEF_FIXED(".pll4_div2", CLK_PLL4_DIV2,  CLK_PLL4,       2, 1),
81         DEF_FIXED(".pll5_div2", CLK_PLL5_DIV2,  CLK_PLL5,       2, 1),
82         DEF_FIXED(".pll5_div4", CLK_PLL5_DIV4,  CLK_PLL5_DIV2,  2, 1),
83         DEF_FIXED(".pll6_div2", CLK_PLL6_DIV2,  CLK_PLL6,       2, 1),
84         DEF_FIXED(".s0",        CLK_S0,         CLK_PLL1_DIV2,  2, 1),
85         DEF_FIXED(".s0_vio",    CLK_S0_VIO,     CLK_PLL1_DIV2,  2, 1),
86         DEF_FIXED(".s0_vc",     CLK_S0_VC,      CLK_PLL1_DIV2,  2, 1),
87         DEF_FIXED(".s0_hsc",    CLK_S0_HSC,     CLK_PLL1_DIV2,  2, 1),
88         DEF_FIXED(".sasyncper", CLK_SASYNCPER,  CLK_PLL5_DIV4,  3, 1),
89         DEF_FIXED(".sv_vip",    CLK_SV_VIP,     CLK_PLL1,       5, 1),
90         DEF_FIXED(".sv_ir",     CLK_SV_IR,      CLK_PLL1,       5, 1),
91         DEF_BASE(".sdsrc",      CLK_SDSRC,      CLK_TYPE_GEN4_SDSRC, CLK_PLL5),
92         DEF_RATE(".oco",        CLK_OCO,        32768),
93
94         DEF_BASE(".rpcsrc",     CLK_RPCSRC,     CLK_TYPE_GEN4_RPCSRC, CLK_PLL5),
95         DEF_FIXED(".vio",       CLK_VIO,        CLK_PLL5_DIV2,  3, 1),
96         DEF_FIXED(".vc",        CLK_VC,         CLK_PLL5_DIV2,  3, 1),
97
98         /* Core Clock Outputs */
99         DEF_GEN4_Z("z0",        R8A779G0_CLK_Z0,        CLK_TYPE_GEN4_Z,        CLK_PLL2,       2, 0),
100         DEF_FIXED("s0d2",       R8A779G0_CLK_S0D2,      CLK_S0,         2, 1),
101         DEF_FIXED("s0d3",       R8A779G0_CLK_S0D3,      CLK_S0,         3, 1),
102         DEF_FIXED("s0d4",       R8A779G0_CLK_S0D4,      CLK_S0,         4, 1),
103         DEF_FIXED("cl16m",      R8A779G0_CLK_CL16M,     CLK_S0,         48, 1),
104         DEF_FIXED("s0d1_vio",   R8A779G0_CLK_S0D1_VIO,  CLK_S0_VIO,     1, 1),
105         DEF_FIXED("s0d2_vio",   R8A779G0_CLK_S0D2_VIO,  CLK_S0_VIO,     2, 1),
106         DEF_FIXED("s0d4_vio",   R8A779G0_CLK_S0D4_VIO,  CLK_S0_VIO,     4, 1),
107         DEF_FIXED("s0d8_vio",   R8A779G0_CLK_S0D8_VIO,  CLK_S0_VIO,     8, 1),
108         DEF_FIXED("s0d1_vc",    R8A779G0_CLK_S0D1_VC,   CLK_S0_VC,      1, 1),
109         DEF_FIXED("s0d2_vc",    R8A779G0_CLK_S0D2_VC,   CLK_S0_VC,      2, 1),
110         DEF_FIXED("s0d4_vc",    R8A779G0_CLK_S0D4_VC,   CLK_S0_VC,      4, 1),
111         DEF_FIXED("s0d2_mm",    R8A779G0_CLK_S0D2_MM,   CLK_S0,         2, 1),
112         DEF_FIXED("s0d4_mm",    R8A779G0_CLK_S0D4_MM,   CLK_S0,         4, 1),
113         DEF_FIXED("cl16m_mm",   R8A779G0_CLK_CL16M_MM,  CLK_S0,         48, 1),
114         DEF_FIXED("s0d2_u3dg",  R8A779G0_CLK_S0D2_U3DG, CLK_S0,         2, 1),
115         DEF_FIXED("s0d4_u3dg",  R8A779G0_CLK_S0D4_U3DG, CLK_S0,         4, 1),
116         DEF_FIXED("s0d2_rt",    R8A779G0_CLK_S0D2_RT,   CLK_S0,         2, 1),
117         DEF_FIXED("s0d3_rt",    R8A779G0_CLK_S0D3_RT,   CLK_S0,         3, 1),
118         DEF_FIXED("s0d4_rt",    R8A779G0_CLK_S0D4_RT,   CLK_S0,         4, 1),
119         DEF_FIXED("s0d6_rt",    R8A779G0_CLK_S0D6_RT,   CLK_S0,         6, 1),
120         DEF_FIXED("s0d24_rt",   R8A779G0_CLK_S0D24_RT,  CLK_S0,         24, 1),
121         DEF_FIXED("cl16m_rt",   R8A779G0_CLK_CL16M_RT,  CLK_S0,         48, 1),
122         DEF_FIXED("s0d2_per",   R8A779G0_CLK_S0D2_PER,  CLK_S0,         2, 1),
123         DEF_FIXED("s0d3_per",   R8A779G0_CLK_S0D3_PER,  CLK_S0,         3, 1),
124         DEF_FIXED("s0d4_per",   R8A779G0_CLK_S0D4_PER,  CLK_S0,         4, 1),
125         DEF_FIXED("s0d6_per",   R8A779G0_CLK_S0D6_PER,  CLK_S0,         6, 1),
126         DEF_FIXED("s0d12_per",  R8A779G0_CLK_S0D12_PER, CLK_S0,         12, 1),
127         DEF_FIXED("s0d24_per",  R8A779G0_CLK_S0D24_PER, CLK_S0,         24, 1),
128         DEF_FIXED("cl16m_per",  R8A779G0_CLK_CL16M_PER, CLK_S0,         48, 1),
129         DEF_FIXED("s0d1_hsc",   R8A779G0_CLK_S0D1_HSC,  CLK_S0_HSC,     1, 1),
130         DEF_FIXED("s0d2_hsc",   R8A779G0_CLK_S0D2_HSC,  CLK_S0_HSC,     2, 1),
131         DEF_FIXED("s0d4_hsc",   R8A779G0_CLK_S0D4_HSC,  CLK_S0_HSC,     4, 1),
132         DEF_FIXED("cl16m_hsc",  R8A779G0_CLK_CL16M_HSC, CLK_S0_HSC,     48, 1),
133         DEF_FIXED("s0d2_cc",    R8A779G0_CLK_S0D2_CC,   CLK_S0,         2, 1),
134         DEF_FIXED("sasyncrt",   R8A779G0_CLK_SASYNCRT,  CLK_PLL5_DIV4,  48, 1),
135         DEF_FIXED("sasyncperd1",R8A779G0_CLK_SASYNCPERD1, CLK_SASYNCPER,1, 1),
136         DEF_FIXED("sasyncperd2",R8A779G0_CLK_SASYNCPERD2, CLK_SASYNCPER,2, 1),
137         DEF_FIXED("sasyncperd4",R8A779G0_CLK_SASYNCPERD4, CLK_SASYNCPER,4, 1),
138         DEF_FIXED("svd1_ir",    R8A779G0_CLK_SVD1_IR,   CLK_SV_IR,      1, 1),
139         DEF_FIXED("svd2_ir",    R8A779G0_CLK_SVD2_IR,   CLK_SV_IR,      2, 1),
140         DEF_FIXED("svd1_vip",   R8A779G0_CLK_SVD1_VIP,  CLK_SV_VIP,     1, 1),
141         DEF_FIXED("svd2_vip",   R8A779G0_CLK_SVD2_VIP,  CLK_SV_VIP,     2, 1),
142         DEF_FIXED("cbfusa",     R8A779G0_CLK_CBFUSA,    CLK_EXTAL,      2, 1),
143         DEF_FIXED("cpex",       R8A779G0_CLK_CPEX,      CLK_EXTAL,      2, 1),
144         DEF_FIXED("cp",         R8A779G0_CLK_CP,        CLK_EXTAL,      2, 1),
145         DEF_FIXED("viobus",     R8A779G0_CLK_VIOBUS,    CLK_VIO,        1, 1),
146         DEF_FIXED("viobusd2",   R8A779G0_CLK_VIOBUSD2,  CLK_VIO,        2, 1),
147         DEF_FIXED("vcbus",      R8A779G0_CLK_VCBUS,     CLK_VC,         1, 1),
148         DEF_FIXED("vcbusd2",    R8A779G0_CLK_VCBUSD2,   CLK_VC,         2, 1),
149         DEF_DIV6P1("canfd",     R8A779G0_CLK_CANFD,     CLK_PLL5_DIV4,  0x878),
150         DEF_DIV6P1("csi",       R8A779G0_CLK_CSI,       CLK_PLL5_DIV4,  0x880),
151         DEF_FIXED("dsiref",     R8A779G0_CLK_DSIREF,    CLK_PLL5_DIV4,  48, 1),
152         DEF_DIV6P1("dsiext",    R8A779G0_CLK_DSIEXT,    CLK_PLL5_DIV4,  0x884),
153
154         DEF_GEN4_SDH("sd0h",    R8A779G0_CLK_SD0H,      CLK_SDSRC,         0x870),
155         DEF_GEN4_SD("sd0",      R8A779G0_CLK_SD0,       R8A779G0_CLK_SD0H, 0x870),
156         DEF_DIV6P1("mso",       R8A779G0_CLK_MSO,       CLK_PLL5_DIV4,  0x87c),
157
158         DEF_BASE("rpc",         R8A779G0_CLK_RPC,       CLK_TYPE_GEN4_RPC, CLK_RPCSRC),
159         DEF_BASE("rpcd2",       R8A779G0_CLK_RPCD2,     CLK_TYPE_GEN4_RPCD2, R8A779G0_CLK_RPC),
160
161         DEF_GEN4_OSC("osc",     R8A779G0_CLK_OSC,       CLK_EXTAL,      8),
162         DEF_GEN4_MDSEL("r",     R8A779G0_CLK_R, 29, CLK_EXTALR, 1, CLK_OCO, 1),
163 };
164
165 static const struct mssr_mod_clk r8a779g0_mod_clks[] __initconst = {
166         DEF_MOD("avb0",         211,    R8A779G0_CLK_S0D4_HSC),
167         DEF_MOD("avb1",         212,    R8A779G0_CLK_S0D4_HSC),
168         DEF_MOD("avb2",         213,    R8A779G0_CLK_S0D4_HSC),
169         DEF_MOD("canfd0",       328,    R8A779G0_CLK_SASYNCPERD2),
170         DEF_MOD("csi40",        331,    R8A779G0_CLK_CSI),
171         DEF_MOD("csi41",        400,    R8A779G0_CLK_CSI),
172         DEF_MOD("dis0",         411,    R8A779G0_CLK_VIOBUSD2),
173         DEF_MOD("dsitxlink0",   415,    R8A779G0_CLK_VIOBUSD2),
174         DEF_MOD("dsitxlink1",   416,    R8A779G0_CLK_VIOBUSD2),
175         DEF_MOD("fcpvd0",       508,    R8A779G0_CLK_VIOBUSD2),
176         DEF_MOD("fcpvd1",       509,    R8A779G0_CLK_VIOBUSD2),
177         DEF_MOD("hscif0",       514,    R8A779G0_CLK_SASYNCPERD1),
178         DEF_MOD("hscif1",       515,    R8A779G0_CLK_SASYNCPERD1),
179         DEF_MOD("hscif2",       516,    R8A779G0_CLK_SASYNCPERD1),
180         DEF_MOD("hscif3",       517,    R8A779G0_CLK_SASYNCPERD1),
181         DEF_MOD("i2c0",         518,    R8A779G0_CLK_S0D6_PER),
182         DEF_MOD("i2c1",         519,    R8A779G0_CLK_S0D6_PER),
183         DEF_MOD("i2c2",         520,    R8A779G0_CLK_S0D6_PER),
184         DEF_MOD("i2c3",         521,    R8A779G0_CLK_S0D6_PER),
185         DEF_MOD("i2c4",         522,    R8A779G0_CLK_S0D6_PER),
186         DEF_MOD("i2c5",         523,    R8A779G0_CLK_S0D6_PER),
187         DEF_MOD("irqc",         611,    R8A779G0_CLK_CL16M),
188         DEF_MOD("ispcs0",       612,    R8A779G0_CLK_S0D2_VIO),
189         DEF_MOD("ispcs1",       613,    R8A779G0_CLK_S0D2_VIO),
190         DEF_MOD("msi0",         618,    R8A779G0_CLK_MSO),
191         DEF_MOD("msi1",         619,    R8A779G0_CLK_MSO),
192         DEF_MOD("msi2",         620,    R8A779G0_CLK_MSO),
193         DEF_MOD("msi3",         621,    R8A779G0_CLK_MSO),
194         DEF_MOD("msi4",         622,    R8A779G0_CLK_MSO),
195         DEF_MOD("msi5",         623,    R8A779G0_CLK_MSO),
196         DEF_MOD("pciec0",       624,    R8A779G0_CLK_S0D2_HSC),
197         DEF_MOD("pciec1",       625,    R8A779G0_CLK_S0D2_HSC),
198         DEF_MOD("pwm",          628,    R8A779G0_CLK_SASYNCPERD4),
199         DEF_MOD("rpc-if",       629,    R8A779G0_CLK_RPCD2),
200         DEF_MOD("scif0",        702,    R8A779G0_CLK_SASYNCPERD4),
201         DEF_MOD("scif1",        703,    R8A779G0_CLK_SASYNCPERD4),
202         DEF_MOD("scif3",        704,    R8A779G0_CLK_SASYNCPERD4),
203         DEF_MOD("scif4",        705,    R8A779G0_CLK_SASYNCPERD4),
204         DEF_MOD("sdhi",         706,    R8A779G0_CLK_SD0),
205         DEF_MOD("sys-dmac0",    709,    R8A779G0_CLK_S0D6_PER),
206         DEF_MOD("sys-dmac1",    710,    R8A779G0_CLK_S0D6_PER),
207         DEF_MOD("tmu0",         713,    R8A779G0_CLK_SASYNCRT),
208         DEF_MOD("tmu1",         714,    R8A779G0_CLK_SASYNCPERD2),
209         DEF_MOD("tmu2",         715,    R8A779G0_CLK_SASYNCPERD2),
210         DEF_MOD("tmu3",         716,    R8A779G0_CLK_SASYNCPERD2),
211         DEF_MOD("tmu4",         717,    R8A779G0_CLK_SASYNCPERD2),
212         DEF_MOD("tpu0",         718,    R8A779G0_CLK_SASYNCPERD4),
213         DEF_MOD("vin00",        730,    R8A779G0_CLK_S0D4_VIO),
214         DEF_MOD("vin01",        731,    R8A779G0_CLK_S0D4_VIO),
215         DEF_MOD("vin02",        800,    R8A779G0_CLK_S0D4_VIO),
216         DEF_MOD("vin03",        801,    R8A779G0_CLK_S0D4_VIO),
217         DEF_MOD("vin04",        802,    R8A779G0_CLK_S0D4_VIO),
218         DEF_MOD("vin05",        803,    R8A779G0_CLK_S0D4_VIO),
219         DEF_MOD("vin06",        804,    R8A779G0_CLK_S0D4_VIO),
220         DEF_MOD("vin07",        805,    R8A779G0_CLK_S0D4_VIO),
221         DEF_MOD("vin10",        806,    R8A779G0_CLK_S0D4_VIO),
222         DEF_MOD("vin11",        807,    R8A779G0_CLK_S0D4_VIO),
223         DEF_MOD("vin12",        808,    R8A779G0_CLK_S0D4_VIO),
224         DEF_MOD("vin13",        809,    R8A779G0_CLK_S0D4_VIO),
225         DEF_MOD("vin14",        810,    R8A779G0_CLK_S0D4_VIO),
226         DEF_MOD("vin15",        811,    R8A779G0_CLK_S0D4_VIO),
227         DEF_MOD("vin16",        812,    R8A779G0_CLK_S0D4_VIO),
228         DEF_MOD("vin17",        813,    R8A779G0_CLK_S0D4_VIO),
229         DEF_MOD("vspd0",        830,    R8A779G0_CLK_VIOBUSD2),
230         DEF_MOD("vspd1",        831,    R8A779G0_CLK_VIOBUSD2),
231         DEF_MOD("wdt1:wdt0",    907,    R8A779G0_CLK_R),
232         DEF_MOD("cmt0",         910,    R8A779G0_CLK_R),
233         DEF_MOD("cmt1",         911,    R8A779G0_CLK_R),
234         DEF_MOD("cmt2",         912,    R8A779G0_CLK_R),
235         DEF_MOD("cmt3",         913,    R8A779G0_CLK_R),
236         DEF_MOD("pfc0",         915,    R8A779G0_CLK_CP),
237         DEF_MOD("pfc1",         916,    R8A779G0_CLK_CP),
238         DEF_MOD("pfc2",         917,    R8A779G0_CLK_CP),
239         DEF_MOD("pfc3",         918,    R8A779G0_CLK_CP),
240         DEF_MOD("tsc",          919,    R8A779G0_CLK_CL16M),
241         DEF_MOD("tsn",          2723,   R8A779G0_CLK_S0D4_HSC),
242         DEF_MOD("ssiu",         2926,   R8A779G0_CLK_S0D6_PER),
243         DEF_MOD("ssi",          2927,   R8A779G0_CLK_S0D6_PER),
244 };
245
246 /*
247  * CPG Clock Data
248  */
249 /*
250  *   MD  EXTAL          PLL1    PLL2    PLL3    PLL4    PLL5    PLL6    OSC
251  * 14 13 (MHz)
252  * ------------------------------------------------------------------------
253  * 0  0  16.66 / 1      x192    x204    x192    x144    x192    x168    /16
254  * 0  1  20    / 1      x160    x170    x160    x120    x160    x140    /19
255  * 1  0  Prohibited setting
256  * 1  1  33.33 / 2      x192    x204    x192    x144    x192    x168    /32
257  */
258 #define CPG_PLL_CONFIG_INDEX(md)        ((((md) & BIT(14)) >> 13) | \
259                                          (((md) & BIT(13)) >> 13))
260
261 static const struct rcar_gen4_cpg_pll_config cpg_pll_configs[4] = {
262         /* EXTAL div    PLL1 mult/div   PLL2 mult/div   PLL3 mult/div   PLL4 mult/div   PLL5 mult/div   PLL6 mult/div   OSC prediv */
263         { 1,            192,    1,      204,    1,      192,    1,      144,    1,      192,    1,      168,    1,      16,     },
264         { 1,            160,    1,      170,    1,      160,    1,      120,    1,      160,    1,      140,    1,      19,     },
265         { 0,            0,      0,      0,      0,      0,      0,      0,      0,      0,      0,      0,      0,      0,      },
266         { 2,            192,    1,      204,    1,      192,    1,      144,    1,      192,    1,      168,    1,      32,     },
267 };
268
269 static int __init r8a779g0_cpg_mssr_init(struct device *dev)
270 {
271         const struct rcar_gen4_cpg_pll_config *cpg_pll_config;
272         u32 cpg_mode;
273         int error;
274
275         error = rcar_rst_read_mode_pins(&cpg_mode);
276         if (error)
277                 return error;
278
279         cpg_pll_config = &cpg_pll_configs[CPG_PLL_CONFIG_INDEX(cpg_mode)];
280         if (!cpg_pll_config->extal_div) {
281                 dev_err(dev, "Prohibited setting (cpg_mode=0x%x)\n", cpg_mode);
282                 return -EINVAL;
283         }
284
285         return rcar_gen4_cpg_init(cpg_pll_config, CLK_EXTALR, cpg_mode);
286 }
287
288 const struct cpg_mssr_info r8a779g0_cpg_mssr_info __initconst = {
289         /* Core Clocks */
290         .core_clks = r8a779g0_core_clks,
291         .num_core_clks = ARRAY_SIZE(r8a779g0_core_clks),
292         .last_dt_core_clk = LAST_DT_CORE_CLK,
293         .num_total_core_clks = MOD_CLK_BASE,
294
295         /* Module Clocks */
296         .mod_clks = r8a779g0_mod_clks,
297         .num_mod_clks = ARRAY_SIZE(r8a779g0_mod_clks),
298         .num_hw_mod_clks = 30 * 32,
299
300         /* Callbacks */
301         .init = r8a779g0_cpg_mssr_init,
302         .cpg_clk_register = rcar_gen4_cpg_clk_register,
303
304         .reg_layout = CLK_REG_LAYOUT_RCAR_GEN4,
305 };