1 /*
2  * r8a7794 Clock Pulse Generator / Module Standby and Software Reset
3  *
4  * Copyright (C) 2017 Glider bvba
5  *
6  * Based on clk-rcar-gen2.c
7  *
8  * Copyright (C) 2013 Ideas On Board SPRL
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 <common.h>
16 #include <clk-uclass.h>
17 #include <dm.h>
18 
19 #include <dt-bindings/clock/r8a7794-cpg-mssr.h>
20 
21 #include "renesas-cpg-mssr.h"
22 #include "rcar-gen2-cpg.h"
23 
24 enum clk_ids {
25 	/* Core Clock Outputs exported to DT */
26 	LAST_DT_CORE_CLK = R8A7794_CLK_OSC,
27 
28 	/* External Input Clocks */
29 	CLK_EXTAL,
30 	CLK_USB_EXTAL,
31 
32 	/* Internal Core Clocks */
33 	CLK_MAIN,
34 	CLK_PLL0,
35 	CLK_PLL1,
36 	CLK_PLL3,
37 	CLK_PLL1_DIV2,
38 
39 	/* Module Clocks */
40 	MOD_CLK_BASE
41 };
42 
43 static const struct cpg_core_clk r8a7794_core_clks[] __initconst = {
44 	/* External Clock Inputs */
45 	DEF_INPUT("extal",     CLK_EXTAL),
46 	DEF_INPUT("usb_extal", CLK_USB_EXTAL),
47 
48 	/* Internal Core Clocks */
49 	DEF_BASE(".main",       CLK_MAIN, CLK_TYPE_GEN2_MAIN, CLK_EXTAL),
50 	DEF_BASE(".pll0",       CLK_PLL0, CLK_TYPE_GEN2_PLL0, CLK_MAIN),
51 	DEF_BASE(".pll1",       CLK_PLL1, CLK_TYPE_GEN2_PLL1, CLK_MAIN),
52 	DEF_BASE(".pll3",       CLK_PLL3, CLK_TYPE_GEN2_PLL3, CLK_MAIN),
53 
54 	DEF_FIXED(".pll1_div2", CLK_PLL1_DIV2, CLK_PLL1, 2, 1),
55 
56 	/* Core Clock Outputs */
57 	DEF_BASE("lb",   R8A7794_CLK_LB,   CLK_TYPE_GEN2_LB,   CLK_PLL1),
58 	DEF_BASE("adsp", R8A7794_CLK_ADSP, CLK_TYPE_GEN2_ADSP, CLK_PLL1),
59 	DEF_BASE("sdh",  R8A7794_CLK_SDH,  CLK_TYPE_GEN2_SDH,  CLK_PLL1),
60 	DEF_BASE("sd0",  R8A7794_CLK_SD0,  CLK_TYPE_GEN2_SD0,  CLK_PLL1),
61 	DEF_BASE("qspi", R8A7794_CLK_QSPI, CLK_TYPE_GEN2_QSPI, CLK_PLL1_DIV2),
62 	DEF_BASE("rcan", R8A7794_CLK_RCAN, CLK_TYPE_GEN2_RCAN, CLK_USB_EXTAL),
63 
64 	DEF_FIXED("z2",     R8A7794_CLK_Z2,    CLK_PLL0,          1, 1),
65 	DEF_FIXED("zg",     R8A7794_CLK_ZG,    CLK_PLL1,          6, 1),
66 	DEF_FIXED("zx",     R8A7794_CLK_ZX,    CLK_PLL1,          3, 1),
67 	DEF_FIXED("zs",     R8A7794_CLK_ZS,    CLK_PLL1,          6, 1),
68 	DEF_FIXED("hp",     R8A7794_CLK_HP,    CLK_PLL1,         12, 1),
69 	DEF_FIXED("i",      R8A7794_CLK_I,     CLK_PLL1,          2, 1),
70 	DEF_FIXED("b",      R8A7794_CLK_B,     CLK_PLL1,         12, 1),
71 	DEF_FIXED("p",      R8A7794_CLK_P,     CLK_PLL1,         24, 1),
72 	DEF_FIXED("cl",     R8A7794_CLK_CL,    CLK_PLL1,         48, 1),
73 	DEF_FIXED("cp",     R8A7794_CLK_CP,    CLK_PLL1,         48, 1),
74 	DEF_FIXED("m2",     R8A7794_CLK_M2,    CLK_PLL1,          8, 1),
75 	DEF_FIXED("zb3",    R8A7794_CLK_ZB3,   CLK_PLL3,          4, 1),
76 	DEF_FIXED("zb3d2",  R8A7794_CLK_ZB3D2, CLK_PLL3,          8, 1),
77 	DEF_FIXED("ddr",    R8A7794_CLK_DDR,   CLK_PLL3,          8, 1),
78 	DEF_FIXED("mp",     R8A7794_CLK_MP,    CLK_PLL1_DIV2,    15, 1),
79 	DEF_FIXED("cpex",   R8A7794_CLK_CPEX,  CLK_EXTAL,         2, 1),
80 	DEF_FIXED("r",      R8A7794_CLK_R,     CLK_PLL1,      49152, 1),
81 	DEF_FIXED("osc",    R8A7794_CLK_OSC,   CLK_PLL1,      12288, 1),
82 
83 	DEF_DIV6P1("sd2",   R8A7794_CLK_SD2,   CLK_PLL1_DIV2, 0x078),
84 	DEF_DIV6P1("sd3",   R8A7794_CLK_SD3,   CLK_PLL1_DIV2, 0x26c),
85 	DEF_DIV6P1("mmc0",  R8A7794_CLK_MMC0,  CLK_PLL1_DIV2, 0x240),
86 };
87 
88 static const struct mssr_mod_clk r8a7794_mod_clks[] __initconst = {
89 	DEF_MOD("msiof0",		   0,	R8A7794_CLK_MP),
90 	DEF_MOD("vcp0",			 101,	R8A7794_CLK_ZS),
91 	DEF_MOD("vpc0",			 103,	R8A7794_CLK_ZS),
92 	DEF_MOD("jpu",			 106,	R8A7794_CLK_M2),
93 	DEF_MOD("tmu1",			 111,	R8A7794_CLK_P),
94 	DEF_MOD("3dg",			 112,	R8A7794_CLK_ZG),
95 	DEF_MOD("2d-dmac",		 115,	R8A7794_CLK_ZS),
96 	DEF_MOD("fdp1-0",		 119,	R8A7794_CLK_ZS),
97 	DEF_MOD("tmu3",			 121,	R8A7794_CLK_P),
98 	DEF_MOD("tmu2",			 122,	R8A7794_CLK_P),
99 	DEF_MOD("cmt0",			 124,	R8A7794_CLK_R),
100 	DEF_MOD("tmu0",			 125,	R8A7794_CLK_CP),
101 	DEF_MOD("vsp1du0",		 128,	R8A7794_CLK_ZS),
102 	DEF_MOD("vsp1-sy",		 131,	R8A7794_CLK_ZS),
103 	DEF_MOD("scifa2",		 202,	R8A7794_CLK_MP),
104 	DEF_MOD("scifa1",		 203,	R8A7794_CLK_MP),
105 	DEF_MOD("scifa0",		 204,	R8A7794_CLK_MP),
106 	DEF_MOD("msiof2",		 205,	R8A7794_CLK_MP),
107 	DEF_MOD("scifb0",		 206,	R8A7794_CLK_MP),
108 	DEF_MOD("scifb1",		 207,	R8A7794_CLK_MP),
109 	DEF_MOD("msiof1",		 208,	R8A7794_CLK_MP),
110 	DEF_MOD("scifb2",		 216,	R8A7794_CLK_MP),
111 	DEF_MOD("sys-dmac1",		 218,	R8A7794_CLK_ZS),
112 	DEF_MOD("sys-dmac0",		 219,	R8A7794_CLK_ZS),
113 	DEF_MOD("tpu0",			 304,	R8A7794_CLK_CP),
114 	DEF_MOD("sdhi3",		 311,	R8A7794_CLK_SD3),
115 	DEF_MOD("sdhi2",		 312,	R8A7794_CLK_SD2),
116 	DEF_MOD("sdhi0",		 314,	R8A7794_CLK_SD0),
117 	DEF_MOD("mmcif0",		 315,	R8A7794_CLK_MMC0),
118 	DEF_MOD("iic0",			 318,	R8A7794_CLK_HP),
119 	DEF_MOD("iic1",			 323,	R8A7794_CLK_HP),
120 	DEF_MOD("cmt1",			 329,	R8A7794_CLK_R),
121 	DEF_MOD("usbhs-dmac0",		 330,	R8A7794_CLK_HP),
122 	DEF_MOD("usbhs-dmac1",		 331,	R8A7794_CLK_HP),
123 	DEF_MOD("irqc",			 407,	R8A7794_CLK_CP),
124 	DEF_MOD("intc-sys",		 408,	R8A7794_CLK_ZS),
125 	DEF_MOD("audio-dmac0",		 502,	R8A7794_CLK_HP),
126 	DEF_MOD("adsp_mod",		 506,	R8A7794_CLK_ADSP),
127 	DEF_MOD("pwm",			 523,	R8A7794_CLK_P),
128 	DEF_MOD("usb-ehci",		 703,	R8A7794_CLK_MP),
129 	DEF_MOD("usbhs",		 704,	R8A7794_CLK_HP),
130 	DEF_MOD("hscif2",		 713,	R8A7794_CLK_ZS),
131 	DEF_MOD("scif5",		 714,	R8A7794_CLK_P),
132 	DEF_MOD("scif4",		 715,	R8A7794_CLK_P),
133 	DEF_MOD("hscif1",		 716,	R8A7794_CLK_ZS),
134 	DEF_MOD("hscif0",		 717,	R8A7794_CLK_ZS),
135 	DEF_MOD("scif3",		 718,	R8A7794_CLK_P),
136 	DEF_MOD("scif2",		 719,	R8A7794_CLK_P),
137 	DEF_MOD("scif1",		 720,	R8A7794_CLK_P),
138 	DEF_MOD("scif0",		 721,	R8A7794_CLK_P),
139 	DEF_MOD("du1",			 723,	R8A7794_CLK_ZX),
140 	DEF_MOD("du0",			 724,	R8A7794_CLK_ZX),
141 	DEF_MOD("ipmmu-sgx",		 800,	R8A7794_CLK_ZX),
142 	DEF_MOD("mlb",			 802,	R8A7794_CLK_HP),
143 	DEF_MOD("vin1",			 810,	R8A7794_CLK_ZG),
144 	DEF_MOD("vin0",			 811,	R8A7794_CLK_ZG),
145 	DEF_MOD("etheravb",		 812,	R8A7794_CLK_HP),
146 	DEF_MOD("ether",		 813,	R8A7794_CLK_P),
147 	DEF_MOD("gyro-adc",		 901,	R8A7794_CLK_P),
148 	DEF_MOD("gpio6",		 905,	R8A7794_CLK_CP),
149 	DEF_MOD("gpio5",		 907,	R8A7794_CLK_CP),
150 	DEF_MOD("gpio4",		 908,	R8A7794_CLK_CP),
151 	DEF_MOD("gpio3",		 909,	R8A7794_CLK_CP),
152 	DEF_MOD("gpio2",		 910,	R8A7794_CLK_CP),
153 	DEF_MOD("gpio1",		 911,	R8A7794_CLK_CP),
154 	DEF_MOD("gpio0",		 912,	R8A7794_CLK_CP),
155 	DEF_MOD("can1",			 915,	R8A7794_CLK_P),
156 	DEF_MOD("can0",			 916,	R8A7794_CLK_P),
157 	DEF_MOD("qspi_mod",		 917,	R8A7794_CLK_QSPI),
158 	DEF_MOD("i2c5",			 925,	R8A7794_CLK_HP),
159 	DEF_MOD("i2c4",			 927,	R8A7794_CLK_HP),
160 	DEF_MOD("i2c3",			 928,	R8A7794_CLK_HP),
161 	DEF_MOD("i2c2",			 929,	R8A7794_CLK_HP),
162 	DEF_MOD("i2c1",			 930,	R8A7794_CLK_HP),
163 	DEF_MOD("i2c0",			 931,	R8A7794_CLK_HP),
164 	DEF_MOD("ssi-all",		1005,	R8A7794_CLK_P),
165 	DEF_MOD("ssi9",			1006,	MOD_CLK_ID(1005)),
166 	DEF_MOD("ssi8",			1007,	MOD_CLK_ID(1005)),
167 	DEF_MOD("ssi7",			1008,	MOD_CLK_ID(1005)),
168 	DEF_MOD("ssi6",			1009,	MOD_CLK_ID(1005)),
169 	DEF_MOD("ssi5",			1010,	MOD_CLK_ID(1005)),
170 	DEF_MOD("ssi4",			1011,	MOD_CLK_ID(1005)),
171 	DEF_MOD("ssi3",			1012,	MOD_CLK_ID(1005)),
172 	DEF_MOD("ssi2",			1013,	MOD_CLK_ID(1005)),
173 	DEF_MOD("ssi1",			1014,	MOD_CLK_ID(1005)),
174 	DEF_MOD("ssi0",			1015,	MOD_CLK_ID(1005)),
175 	DEF_MOD("scu-all",		1017,	R8A7794_CLK_P),
176 	DEF_MOD("scu-dvc1",		1018,	MOD_CLK_ID(1017)),
177 	DEF_MOD("scu-dvc0",		1019,	MOD_CLK_ID(1017)),
178 	DEF_MOD("scu-ctu1-mix1",	1020,	MOD_CLK_ID(1017)),
179 	DEF_MOD("scu-ctu0-mix0",	1021,	MOD_CLK_ID(1017)),
180 	DEF_MOD("scu-src6",		1025,	MOD_CLK_ID(1017)),
181 	DEF_MOD("scu-src5",		1026,	MOD_CLK_ID(1017)),
182 	DEF_MOD("scu-src4",		1027,	MOD_CLK_ID(1017)),
183 	DEF_MOD("scu-src3",		1028,	MOD_CLK_ID(1017)),
184 	DEF_MOD("scu-src2",		1029,	MOD_CLK_ID(1017)),
185 	DEF_MOD("scu-src1",		1030,	MOD_CLK_ID(1017)),
186 	DEF_MOD("scifa3",		1106,	R8A7794_CLK_MP),
187 	DEF_MOD("scifa4",		1107,	R8A7794_CLK_MP),
188 	DEF_MOD("scifa5",		1108,	R8A7794_CLK_MP),
189 };
190 
191 static const unsigned int r8a7794_crit_mod_clks[] __initconst = {
192 	MOD_CLK_ID(408),	/* INTC-SYS (GIC) */
193 };
194 
195 /*
196  * CPG Clock Data
197  */
198 
199 /*
200  *   MD		EXTAL		PLL0	PLL1	PLL3
201  * 14 13 19	(MHz)		*1	*2
202  *---------------------------------------------------
203  * 0  0  1	15		x200/3	x208/2	x88
204  * 0  1  1	20		x150/3	x156/2	x66
205  * 1  0  1	26 / 2		x230/3	x240/2	x102
206  * 1  1  1	30 / 2		x200/3	x208/2	x88
207  *
208  * *1 :	Table 7.5c indicates VCO output (PLL0 = VCO/3)
209  * *2 :	Table 7.5c indicates VCO output (PLL1 = VCO/2)
210  */
211 #define CPG_PLL_CONFIG_INDEX(md)	((((md) & BIT(14)) >> 13) | \
212 					 (((md) & BIT(13)) >> 13))
213 static const struct rcar_gen2_cpg_pll_config cpg_pll_configs[4] __initconst = {
214 	{ 1, 208,  88, 200 },
215 	{ 1, 156,  66, 150 },
216 	{ 2, 240, 102, 230 },
217 	{ 2, 208,  88, 200 },
218 };
219 
220 static const struct mstp_stop_table r8a7794_mstp_table[] = {
221 	{ 0x00440801, 0x400000, 0x00440801, 0x0 },
222 	{ 0x936899DA, 0x0, 0x936899DA, 0x0 },
223 	{ 0x100D21FC, 0x2000, 0x100D21FC, 0x0 },
224 	{ 0xE084D810, 0x0, 0xE084D810, 0x0 },
225 	{ 0x800001C4, 0x180, 0x800001C4, 0x0 },
226 	{ 0x40C00044, 0x0, 0x40C00044, 0x0 },
227 	{ 0x0, 0x0, 0x0, 0x0 },	/* SMSTP6 is not present on Gen2 */
228 	{ 0x013FE618, 0x80000, 0x013FE618, 0x0 },
229 	{ 0x40803C05, 0x0, 0x40803C05, 0x0 },
230 	{ 0xFB879FEE, 0x0, 0xFB879FEE, 0x0 },
231 	{ 0xFFFEFFE0, 0x0, 0xFFFEFFE0, 0x0 },
232 	{ 0x000001C0, 0x0, 0x000001C0, 0x0 },
233 };
234 
235 static const void *r8a7794_get_pll_config(const u32 cpg_mode)
236 {
237 	return &cpg_pll_configs[CPG_PLL_CONFIG_INDEX(cpg_mode)];
238 }
239 
240 static const struct cpg_mssr_info r8a7794_cpg_mssr_info = {
241 	.core_clk		= r8a7794_core_clks,
242 	.core_clk_size		= ARRAY_SIZE(r8a7794_core_clks),
243 	.mod_clk		= r8a7794_mod_clks,
244 	.mod_clk_size		= ARRAY_SIZE(r8a7794_mod_clks),
245 	.mstp_table		= r8a7794_mstp_table,
246 	.mstp_table_size	= ARRAY_SIZE(r8a7794_mstp_table),
247 	.reset_node		= "renesas,r8a7794-rst",
248 	.extal_usb_node		= "usb_extal",
249 	.mod_clk_base		= MOD_CLK_BASE,
250 	.clk_extal_id		= CLK_EXTAL,
251 	.clk_extal_usb_id	= CLK_USB_EXTAL,
252 	.pll0_div		= 2,
253 	.get_pll_config		= r8a7794_get_pll_config,
254 };
255 
256 static const struct udevice_id r8a7794_clk_ids[] = {
257 	{
258 		.compatible	= "renesas,r8a7794-cpg-mssr",
259 		.data		= (ulong)&r8a7794_cpg_mssr_info
260 	},
261 	{
262 		.compatible	= "renesas,r8a7793-cpg-mssr",
263 		.data		= (ulong)&r8a7794_cpg_mssr_info
264 	},
265 	{ }
266 };
267 
268 U_BOOT_DRIVER(clk_r8a7794) = {
269 	.name		= "clk_r8a7794",
270 	.id		= UCLASS_CLK,
271 	.of_match	= r8a7794_clk_ids,
272 	.priv_auto_alloc_size = sizeof(struct gen2_clk_priv),
273 	.ops		= &gen2_clk_ops,
274 	.probe		= gen2_clk_probe,
275 	.remove		= gen2_clk_remove,
276 };
277