1 // SPDX-License-Identifier: GPL-2.0
2 /*
3 * r8a779f0 Clock Pulse Generator / Module Standby and Software Reset
4 *
5 * Copyright (C) 2021 Renesas Electronics Corp.
6 *
7 * Based on r8a779a0-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/r8a779f0-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 = R8A779F0_CLK_R,
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_PLL5,
37 CLK_PLL6,
38 CLK_PLL1_DIV2,
39 CLK_PLL2_DIV2,
40 CLK_PLL3_DIV2,
41 CLK_PLL5_DIV2,
42 CLK_PLL5_DIV4,
43 CLK_PLL6_DIV2,
44 CLK_S0,
45 CLK_SASYNCPER,
46 CLK_SDSRC,
47 CLK_RPCSRC,
48 CLK_OCO,
49
50 /* Module Clocks */
51 MOD_CLK_BASE
52 };
53
54 static const struct cpg_core_clk r8a779f0_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_GEN4_MAIN, CLK_EXTAL),
61 DEF_BASE(".pll1", CLK_PLL1, CLK_TYPE_GEN4_PLL1, CLK_MAIN),
62 DEF_BASE(".pll2", CLK_PLL2, CLK_TYPE_GEN4_PLL2, CLK_MAIN),
63 DEF_BASE(".pll3", CLK_PLL3, CLK_TYPE_GEN4_PLL3, CLK_MAIN),
64 DEF_BASE(".pll5", CLK_PLL5, CLK_TYPE_GEN4_PLL5, CLK_MAIN),
65 DEF_BASE(".pll6", CLK_PLL6, CLK_TYPE_GEN4_PLL6, CLK_MAIN),
66
67 DEF_FIXED(".pll1_div2", CLK_PLL1_DIV2, CLK_PLL1, 2, 1),
68 DEF_FIXED(".pll2_div2", CLK_PLL2_DIV2, CLK_PLL2, 2, 1),
69 DEF_FIXED(".pll3_div2", CLK_PLL3_DIV2, CLK_PLL3, 2, 1),
70 DEF_FIXED(".pll5_div2", CLK_PLL5_DIV2, CLK_PLL5, 2, 1),
71 DEF_FIXED(".pll5_div4", CLK_PLL5_DIV4, CLK_PLL5_DIV2, 2, 1),
72 DEF_FIXED(".pll6_div2", CLK_PLL6_DIV2, CLK_PLL6, 2, 1),
73 DEF_FIXED(".s0", CLK_S0, CLK_PLL1_DIV2, 2, 1),
74
75 DEF_FIXED(".sasyncper", CLK_SASYNCPER, CLK_PLL5_DIV4, 3, 1),
76 DEF_BASE(".sdsrc", CLK_SDSRC, CLK_TYPE_GEN4_SDSRC, CLK_PLL5),
77 DEF_RATE(".oco", CLK_OCO, 32768),
78
79 DEF_BASE(".rpcsrc", CLK_RPCSRC, CLK_TYPE_GEN4_RPCSRC, CLK_PLL5),
80
81 /* Core Clock Outputs */
82 DEF_GEN4_Z("z0", R8A779F0_CLK_Z0, CLK_TYPE_GEN4_Z, CLK_PLL2, 2, 0),
83 DEF_GEN4_Z("z1", R8A779F0_CLK_Z1, CLK_TYPE_GEN4_Z, CLK_PLL2, 2, 8),
84 DEF_FIXED("s0d2", R8A779F0_CLK_S0D2, CLK_S0, 2, 1),
85 DEF_FIXED("s0d3", R8A779F0_CLK_S0D3, CLK_S0, 3, 1),
86 DEF_FIXED("s0d4", R8A779F0_CLK_S0D4, CLK_S0, 4, 1),
87 DEF_FIXED("cl16m", R8A779F0_CLK_CL16M, CLK_S0, 48, 1),
88 DEF_FIXED("s0d2_mm", R8A779F0_CLK_S0D2_MM, CLK_S0, 2, 1),
89 DEF_FIXED("s0d3_mm", R8A779F0_CLK_S0D3_MM, CLK_S0, 3, 1),
90 DEF_FIXED("s0d4_mm", R8A779F0_CLK_S0D4_MM, CLK_S0, 4, 1),
91 DEF_FIXED("cl16m_mm", R8A779F0_CLK_CL16M_MM, CLK_S0, 48, 1),
92 DEF_FIXED("s0d2_rt", R8A779F0_CLK_S0D2_RT, CLK_S0, 2, 1),
93 DEF_FIXED("s0d3_rt", R8A779F0_CLK_S0D3_RT, CLK_S0, 3, 1),
94 DEF_FIXED("s0d4_rt", R8A779F0_CLK_S0D4_RT, CLK_S0, 4, 1),
95 DEF_FIXED("s0d6_rt", R8A779F0_CLK_S0D6_RT, CLK_S0, 6, 1),
96 DEF_FIXED("cl16m_rt", R8A779F0_CLK_CL16M_RT, CLK_S0, 48, 1),
97 DEF_FIXED("s0d3_per", R8A779F0_CLK_S0D3_PER, CLK_S0, 3, 1),
98 DEF_FIXED("s0d6_per", R8A779F0_CLK_S0D6_PER, CLK_S0, 6, 1),
99 DEF_FIXED("s0d12_per", R8A779F0_CLK_S0D12_PER, CLK_S0, 12, 1),
100 DEF_FIXED("s0d24_per", R8A779F0_CLK_S0D24_PER, CLK_S0, 24, 1),
101 DEF_FIXED("cl16m_per", R8A779F0_CLK_CL16M_PER, CLK_S0, 48, 1),
102 DEF_FIXED("s0d2_hsc", R8A779F0_CLK_S0D2_HSC, CLK_S0, 2, 1),
103 DEF_FIXED("s0d3_hsc", R8A779F0_CLK_S0D3_HSC, CLK_S0, 3, 1),
104 DEF_FIXED("s0d4_hsc", R8A779F0_CLK_S0D4_HSC, CLK_S0, 4, 1),
105 DEF_FIXED("s0d6_hsc", R8A779F0_CLK_S0D6_HSC, CLK_S0, 6, 1),
106 DEF_FIXED("s0d12_hsc", R8A779F0_CLK_S0D12_HSC, CLK_S0, 12, 1),
107 DEF_FIXED("cl16m_hsc", R8A779F0_CLK_CL16M_HSC, CLK_S0, 48, 1),
108 DEF_FIXED("s0d2_cc", R8A779F0_CLK_S0D2_CC, CLK_S0, 2, 1),
109 DEF_FIXED("rsw2", R8A779F0_CLK_RSW2, CLK_PLL5_DIV2, 5, 1),
110 DEF_FIXED("cbfusa", R8A779F0_CLK_CBFUSA, CLK_EXTAL, 2, 1),
111 DEF_FIXED("cpex", R8A779F0_CLK_CPEX, CLK_EXTAL, 2, 1),
112
113 DEF_FIXED("sasyncrt", R8A779F0_CLK_SASYNCRT, CLK_PLL5_DIV4, 48, 1),
114 DEF_FIXED("sasyncperd1",R8A779F0_CLK_SASYNCPERD1, CLK_SASYNCPER,1, 1),
115 DEF_FIXED("sasyncperd2",R8A779F0_CLK_SASYNCPERD2, CLK_SASYNCPER,2, 1),
116 DEF_FIXED("sasyncperd4",R8A779F0_CLK_SASYNCPERD4, CLK_SASYNCPER,4, 1),
117
118 DEF_GEN4_SDH("sd0h", R8A779F0_CLK_SD0H, CLK_SDSRC, 0x870),
119 DEF_GEN4_SD("sd0", R8A779F0_CLK_SD0, R8A779F0_CLK_SD0H, 0x870),
120
121 DEF_BASE("rpc", R8A779F0_CLK_RPC, CLK_TYPE_GEN4_RPC, CLK_RPCSRC),
122 DEF_BASE("rpcd2", R8A779F0_CLK_RPCD2, CLK_TYPE_GEN4_RPCD2, R8A779F0_CLK_RPC),
123
124 DEF_DIV6P1("mso", R8A779F0_CLK_MSO, CLK_PLL5_DIV4, 0x87c),
125
126 DEF_GEN4_OSC("osc", R8A779F0_CLK_OSC, CLK_EXTAL, 8),
127 DEF_GEN4_MDSEL("r", R8A779F0_CLK_R, 29, CLK_EXTALR, 1, CLK_OCO, 1),
128 };
129
130 static const struct mssr_mod_clk r8a779f0_mod_clks[] __initconst = {
131 DEF_MOD("hscif0", 514, R8A779F0_CLK_SASYNCPERD1),
132 DEF_MOD("hscif1", 515, R8A779F0_CLK_SASYNCPERD1),
133 DEF_MOD("hscif2", 516, R8A779F0_CLK_SASYNCPERD1),
134 DEF_MOD("hscif3", 517, R8A779F0_CLK_SASYNCPERD1),
135 DEF_MOD("i2c0", 518, R8A779F0_CLK_S0D6_PER),
136 DEF_MOD("i2c1", 519, R8A779F0_CLK_S0D6_PER),
137 DEF_MOD("i2c2", 520, R8A779F0_CLK_S0D6_PER),
138 DEF_MOD("i2c3", 521, R8A779F0_CLK_S0D6_PER),
139 DEF_MOD("i2c4", 522, R8A779F0_CLK_S0D6_PER),
140 DEF_MOD("i2c5", 523, R8A779F0_CLK_S0D6_PER),
141 DEF_MOD("msiof0", 618, R8A779F0_CLK_MSO),
142 DEF_MOD("msiof1", 619, R8A779F0_CLK_MSO),
143 DEF_MOD("msiof2", 620, R8A779F0_CLK_MSO),
144 DEF_MOD("msiof3", 621, R8A779F0_CLK_MSO),
145 DEF_MOD("pcie0", 624, R8A779F0_CLK_S0D2),
146 DEF_MOD("pcie1", 625, R8A779F0_CLK_S0D2),
147 DEF_MOD("scif0", 702, R8A779F0_CLK_SASYNCPERD4),
148 DEF_MOD("scif1", 703, R8A779F0_CLK_SASYNCPERD4),
149 DEF_MOD("scif3", 704, R8A779F0_CLK_SASYNCPERD4),
150 DEF_MOD("scif4", 705, R8A779F0_CLK_SASYNCPERD4),
151 DEF_MOD("sdhi0", 706, R8A779F0_CLK_SD0),
152 DEF_MOD("sys-dmac0", 709, R8A779F0_CLK_S0D3_PER),
153 DEF_MOD("sys-dmac1", 710, R8A779F0_CLK_S0D3_PER),
154 DEF_MOD("tmu0", 713, R8A779F0_CLK_SASYNCRT),
155 DEF_MOD("tmu1", 714, R8A779F0_CLK_SASYNCPERD2),
156 DEF_MOD("tmu2", 715, R8A779F0_CLK_SASYNCPERD2),
157 DEF_MOD("tmu3", 716, R8A779F0_CLK_SASYNCPERD2),
158 DEF_MOD("tmu4", 717, R8A779F0_CLK_SASYNCPERD2),
159 DEF_MOD("wdt", 907, R8A779F0_CLK_R),
160 DEF_MOD("cmt0", 910, R8A779F0_CLK_R),
161 DEF_MOD("cmt1", 911, R8A779F0_CLK_R),
162 DEF_MOD("cmt2", 912, R8A779F0_CLK_R),
163 DEF_MOD("cmt3", 913, R8A779F0_CLK_R),
164 DEF_MOD("pfc0", 915, R8A779F0_CLK_CL16M),
165 DEF_MOD("tsc", 919, R8A779F0_CLK_CL16M),
166 DEF_MOD("rswitch2", 1505, R8A779F0_CLK_RSW2),
167 DEF_MOD("ether-serdes", 1506, R8A779F0_CLK_S0D2_HSC),
168 DEF_MOD("ufs", 1514, R8A779F0_CLK_S0D4_HSC),
169 };
170
171 static const unsigned int r8a779f0_crit_mod_clks[] __initconst = {
172 MOD_CLK_ID(907), /* WDT */
173 };
174
175 /*
176 * CPG Clock Data
177 */
178 /*
179 * MD EXTAL PLL1 PLL2 PLL3 PLL4 PLL5 PLL6 OSC
180 * 14 13 (MHz)
181 * ------------------------------------------------------------------------
182 * 0 0 16 / 1 x200 x150 x200 n/a x200 x134 /15
183 * 0 1 20 / 1 x160 x120 x160 n/a x160 x106 /19
184 * 1 0 Prohibited setting
185 * 1 1 40 / 2 x160 x120 x160 n/a x160 x106 /38
186 */
187 #define CPG_PLL_CONFIG_INDEX(md) ((((md) & BIT(14)) >> 13) | \
188 (((md) & BIT(13)) >> 13))
189
190 static const struct rcar_gen4_cpg_pll_config cpg_pll_configs[4] = {
191 /* EXTAL div PLL1 mult/div PLL2 mult/div PLL3 mult/div PLL4 mult/div PLL5 mult/div PLL6 mult/div OSC prediv */
192 { 1, 200, 1, 150, 1, 200, 1, 0, 0, 200, 1, 134, 1, 15, },
193 { 1, 160, 1, 120, 1, 160, 1, 0, 0, 160, 1, 106, 1, 19, },
194 { 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, },
195 { 2, 160, 1, 120, 1, 160, 1, 0, 0, 160, 1, 106, 1, 38, },
196 };
197
r8a779f0_cpg_mssr_init(struct device * dev)198 static int __init r8a779f0_cpg_mssr_init(struct device *dev)
199 {
200 const struct rcar_gen4_cpg_pll_config *cpg_pll_config;
201 u32 cpg_mode;
202 int error;
203
204 error = rcar_rst_read_mode_pins(&cpg_mode);
205 if (error)
206 return error;
207
208 cpg_pll_config = &cpg_pll_configs[CPG_PLL_CONFIG_INDEX(cpg_mode)];
209 if (!cpg_pll_config->extal_div) {
210 dev_err(dev, "Prohibited setting (cpg_mode=0x%x)\n", cpg_mode);
211 return -EINVAL;
212 }
213
214 return rcar_gen4_cpg_init(cpg_pll_config, CLK_EXTALR, cpg_mode);
215 }
216
217 const struct cpg_mssr_info r8a779f0_cpg_mssr_info __initconst = {
218 /* Core Clocks */
219 .core_clks = r8a779f0_core_clks,
220 .num_core_clks = ARRAY_SIZE(r8a779f0_core_clks),
221 .last_dt_core_clk = LAST_DT_CORE_CLK,
222 .num_total_core_clks = MOD_CLK_BASE,
223
224 /* Module Clocks */
225 .mod_clks = r8a779f0_mod_clks,
226 .num_mod_clks = ARRAY_SIZE(r8a779f0_mod_clks),
227 .num_hw_mod_clks = 28 * 32,
228
229 /* Critical Module Clocks */
230 .crit_mod_clks = r8a779f0_crit_mod_clks,
231 .num_crit_mod_clks = ARRAY_SIZE(r8a779f0_crit_mod_clks),
232
233 /* Callbacks */
234 .init = r8a779f0_cpg_mssr_init,
235 .cpg_clk_register = rcar_gen4_cpg_clk_register,
236
237 .reg_layout = CLK_REG_LAYOUT_RCAR_GEN4,
238 };
239