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e4e2d7c3 GU |
1 | /* |
2 | * r8a7796 Clock Pulse Generator / Module Standby and Software Reset | |
3 | * | |
4 | * Copyright (C) 2016 Glider bvba | |
5 | * | |
6 | * Based on r8a7795-cpg-mssr.c | |
7 | * | |
8 | * Copyright (C) 2015 Glider bvba | |
9 | * Copyright (C) 2015 Renesas Electronics Corp. | |
10 | * | |
11 | * This program is free software; you can redistribute it and/or modify | |
12 | * it under the terms of the GNU General Public License as published by | |
13 | * the Free Software Foundation; version 2 of the License. | |
14 | */ | |
15 | ||
16 | #include <linux/device.h> | |
17 | #include <linux/init.h> | |
18 | #include <linux/kernel.h> | |
19 | ||
20 | #include <dt-bindings/clock/r8a7796-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 = R8A7796_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, | |
2570d400 | 48 | CLK_RINT, |
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49 | |
50 | /* Module Clocks */ | |
51 | MOD_CLK_BASE | |
52 | }; | |
53 | ||
54 | static const struct cpg_core_clk r8a7796_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), | |
07496981 | 73 | DEF_FIXED(".sdsrc", CLK_SDSRC, CLK_PLL1_DIV2, 2, 1), |
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74 | |
75 | /* Core Clock Outputs */ | |
76 | DEF_FIXED("ztr", R8A7796_CLK_ZTR, CLK_PLL1_DIV2, 6, 1), | |
77 | DEF_FIXED("ztrd2", R8A7796_CLK_ZTRD2, CLK_PLL1_DIV2, 12, 1), | |
78 | DEF_FIXED("zt", R8A7796_CLK_ZT, CLK_PLL1_DIV2, 4, 1), | |
79 | DEF_FIXED("zx", R8A7796_CLK_ZX, CLK_PLL1_DIV2, 2, 1), | |
80 | DEF_FIXED("s0d1", R8A7796_CLK_S0D1, CLK_S0, 1, 1), | |
81 | DEF_FIXED("s0d2", R8A7796_CLK_S0D2, CLK_S0, 2, 1), | |
82 | DEF_FIXED("s0d3", R8A7796_CLK_S0D3, CLK_S0, 3, 1), | |
83 | DEF_FIXED("s0d4", R8A7796_CLK_S0D4, CLK_S0, 4, 1), | |
84 | DEF_FIXED("s0d6", R8A7796_CLK_S0D6, CLK_S0, 6, 1), | |
85 | DEF_FIXED("s0d8", R8A7796_CLK_S0D8, CLK_S0, 8, 1), | |
86 | DEF_FIXED("s0d12", R8A7796_CLK_S0D12, CLK_S0, 12, 1), | |
87 | DEF_FIXED("s1d1", R8A7796_CLK_S1D1, CLK_S1, 1, 1), | |
88 | DEF_FIXED("s1d2", R8A7796_CLK_S1D2, CLK_S1, 2, 1), | |
89 | DEF_FIXED("s1d4", R8A7796_CLK_S1D4, CLK_S1, 4, 1), | |
90 | DEF_FIXED("s2d1", R8A7796_CLK_S2D1, CLK_S2, 1, 1), | |
91 | DEF_FIXED("s2d2", R8A7796_CLK_S2D2, CLK_S2, 2, 1), | |
92 | DEF_FIXED("s2d4", R8A7796_CLK_S2D4, CLK_S2, 4, 1), | |
93 | DEF_FIXED("s3d1", R8A7796_CLK_S3D1, CLK_S3, 1, 1), | |
94 | DEF_FIXED("s3d2", R8A7796_CLK_S3D2, CLK_S3, 2, 1), | |
95 | DEF_FIXED("s3d4", R8A7796_CLK_S3D4, CLK_S3, 4, 1), | |
96 | ||
07496981 SH |
97 | DEF_GEN3_SD("sd0", R8A7796_CLK_SD0, CLK_SDSRC, 0x0074), |
98 | DEF_GEN3_SD("sd1", R8A7796_CLK_SD1, CLK_SDSRC, 0x0078), | |
99 | DEF_GEN3_SD("sd2", R8A7796_CLK_SD2, CLK_SDSRC, 0x0268), | |
100 | DEF_GEN3_SD("sd3", R8A7796_CLK_SD3, CLK_SDSRC, 0x026c), | |
101 | ||
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102 | DEF_FIXED("cl", R8A7796_CLK_CL, CLK_PLL1_DIV2, 48, 1), |
103 | DEF_FIXED("cp", R8A7796_CLK_CP, CLK_EXTAL, 2, 1), | |
2570d400 GU |
104 | |
105 | DEF_DIV6_RO("osc", R8A7796_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", R8A7796_CLK_R, CLK_TYPE_GEN3_R, CLK_RINT), | |
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109 | }; |
110 | ||
111 | static const struct mssr_mod_clk r8a7796_mod_clks[] __initconst = { | |
112 | DEF_MOD("scif2", 310, R8A7796_CLK_S3D4), | |
07496981 SH |
113 | DEF_MOD("sdif3", 311, R8A7796_CLK_SD3), |
114 | DEF_MOD("sdif2", 312, R8A7796_CLK_SD2), | |
115 | DEF_MOD("sdif1", 313, R8A7796_CLK_SD1), | |
116 | DEF_MOD("sdif0", 314, R8A7796_CLK_SD0), | |
b51d5275 | 117 | DEF_MOD("rwdt0", 402, R8A7796_CLK_R), |
e4e2d7c3 | 118 | DEF_MOD("intc-ap", 408, R8A7796_CLK_S3D1), |
4e09508a TK |
119 | DEF_MOD("gpio7", 905, R8A7796_CLK_S3D4), |
120 | DEF_MOD("gpio6", 906, R8A7796_CLK_S3D4), | |
121 | DEF_MOD("gpio5", 907, R8A7796_CLK_S3D4), | |
122 | DEF_MOD("gpio4", 908, R8A7796_CLK_S3D4), | |
123 | DEF_MOD("gpio3", 909, R8A7796_CLK_S3D4), | |
124 | DEF_MOD("gpio2", 910, R8A7796_CLK_S3D4), | |
125 | DEF_MOD("gpio1", 911, R8A7796_CLK_S3D4), | |
126 | DEF_MOD("gpio0", 912, R8A7796_CLK_S3D4), | |
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127 | }; |
128 | ||
129 | static const unsigned int r8a7796_crit_mod_clks[] __initconst = { | |
130 | MOD_CLK_ID(408), /* INTC-AP (GIC) */ | |
131 | }; | |
132 | ||
133 | ||
134 | /* | |
135 | * CPG Clock Data | |
136 | */ | |
137 | ||
138 | /* | |
139 | * MD EXTAL PLL0 PLL1 PLL2 PLL3 PLL4 | |
140 | * 14 13 19 17 (MHz) | |
141 | *------------------------------------------------------------------- | |
142 | * 0 0 0 0 16.66 x 1 x180 x192 x144 x192 x144 | |
143 | * 0 0 0 1 16.66 x 1 x180 x192 x144 x128 x144 | |
144 | * 0 0 1 0 Prohibited setting | |
145 | * 0 0 1 1 16.66 x 1 x180 x192 x144 x192 x144 | |
146 | * 0 1 0 0 20 x 1 x150 x160 x120 x160 x120 | |
147 | * 0 1 0 1 20 x 1 x150 x160 x120 x106 x120 | |
148 | * 0 1 1 0 Prohibited setting | |
149 | * 0 1 1 1 20 x 1 x150 x160 x120 x160 x120 | |
150 | * 1 0 0 0 25 x 1 x120 x128 x96 x128 x96 | |
151 | * 1 0 0 1 25 x 1 x120 x128 x96 x84 x96 | |
152 | * 1 0 1 0 Prohibited setting | |
153 | * 1 0 1 1 25 x 1 x120 x128 x96 x128 x96 | |
154 | * 1 1 0 0 33.33 / 2 x180 x192 x144 x192 x144 | |
155 | * 1 1 0 1 33.33 / 2 x180 x192 x144 x128 x144 | |
156 | * 1 1 1 0 Prohibited setting | |
157 | * 1 1 1 1 33.33 / 2 x180 x192 x144 x192 x144 | |
158 | */ | |
159 | #define CPG_PLL_CONFIG_INDEX(md) ((((md) & BIT(14)) >> 11) | \ | |
160 | (((md) & BIT(13)) >> 11) | \ | |
161 | (((md) & BIT(19)) >> 18) | \ | |
162 | (((md) & BIT(17)) >> 17)) | |
163 | ||
164 | static const struct rcar_gen3_cpg_pll_config cpg_pll_configs[16] __initconst = { | |
165 | /* EXTAL div PLL1 mult PLL3 mult */ | |
166 | { 1, 192, 192, }, | |
167 | { 1, 192, 128, }, | |
168 | { 0, /* Prohibited setting */ }, | |
169 | { 1, 192, 192, }, | |
170 | { 1, 160, 160, }, | |
171 | { 1, 160, 106, }, | |
172 | { 0, /* Prohibited setting */ }, | |
173 | { 1, 160, 160, }, | |
174 | { 1, 128, 128, }, | |
175 | { 1, 128, 84, }, | |
176 | { 0, /* Prohibited setting */ }, | |
177 | { 1, 128, 128, }, | |
178 | { 2, 192, 192, }, | |
179 | { 2, 192, 128, }, | |
180 | { 0, /* Prohibited setting */ }, | |
181 | { 2, 192, 192, }, | |
182 | }; | |
183 | ||
184 | static int __init r8a7796_cpg_mssr_init(struct device *dev) | |
185 | { | |
186 | const struct rcar_gen3_cpg_pll_config *cpg_pll_config; | |
187 | u32 cpg_mode = rcar_gen3_read_mode_pins(); | |
188 | ||
189 | cpg_pll_config = &cpg_pll_configs[CPG_PLL_CONFIG_INDEX(cpg_mode)]; | |
190 | if (!cpg_pll_config->extal_div) { | |
191 | dev_err(dev, "Prohibited setting (cpg_mode=0x%x)\n", cpg_mode); | |
192 | return -EINVAL; | |
193 | } | |
194 | ||
195 | return rcar_gen3_cpg_init(cpg_pll_config, CLK_EXTALR); | |
196 | } | |
197 | ||
198 | const struct cpg_mssr_info r8a7796_cpg_mssr_info __initconst = { | |
199 | /* Core Clocks */ | |
200 | .core_clks = r8a7796_core_clks, | |
201 | .num_core_clks = ARRAY_SIZE(r8a7796_core_clks), | |
202 | .last_dt_core_clk = LAST_DT_CORE_CLK, | |
203 | .num_total_core_clks = MOD_CLK_BASE, | |
204 | ||
205 | /* Module Clocks */ | |
206 | .mod_clks = r8a7796_mod_clks, | |
207 | .num_mod_clks = ARRAY_SIZE(r8a7796_mod_clks), | |
208 | .num_hw_mod_clks = 12 * 32, | |
209 | ||
210 | /* Critical Module Clocks */ | |
211 | .crit_mod_clks = r8a7796_crit_mod_clks, | |
212 | .num_crit_mod_clks = ARRAY_SIZE(r8a7796_crit_mod_clks), | |
213 | ||
214 | /* Callbacks */ | |
215 | .init = r8a7796_cpg_mssr_init, | |
216 | .cpg_clk_register = rcar_gen3_cpg_clk_register, | |
217 | }; |