summaryrefslogtreecommitdiffstats
path: root/drivers/clk/renesas/r8a77970-cpg-mssr.c
blob: 2015e45543e948f23aa70160a4a5b34f9f61355d (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
// SPDX-License-Identifier: GPL-2.0
/*
 * r8a77970 Clock Pulse Generator / Module Standby and Software Reset
 *
 * Copyright (C) 2017-2018 Cogent Embedded Inc.
 *
 * Based on r8a7795-cpg-mssr.c
 *
 * Copyright (C) 2015 Glider bvba
 */

#include <linux/clk-provider.h>
#include <linux/device.h>
#include <linux/init.h>
#include <linux/kernel.h>
#include <linux/soc/renesas/rcar-rst.h>

#include <dt-bindings/clock/r8a77970-cpg-mssr.h>

#include "renesas-cpg-mssr.h"
#include "rcar-gen3-cpg.h"

#define CPG_SD0CKCR		0x0074

enum r8a77970_clk_types {
	CLK_TYPE_R8A77970_SD0H = CLK_TYPE_GEN3_SOC_BASE,
	CLK_TYPE_R8A77970_SD0,
};

enum clk_ids {
	/* Core Clock Outputs exported to DT */
	LAST_DT_CORE_CLK = R8A77970_CLK_OSC,

	/* External Input Clocks */
	CLK_EXTAL,
	CLK_EXTALR,

	/* Internal Core Clocks */
	CLK_MAIN,
	CLK_PLL0,
	CLK_PLL1,
	CLK_PLL3,
	CLK_PLL1_DIV2,
	CLK_PLL1_DIV4,

	/* Module Clocks */
	MOD_CLK_BASE
};

static spinlock_t cpg_lock;

static const struct clk_div_table cpg_sd0h_div_table[] = {
	{  0,  2 }, {  1,  3 }, {  2,  4 }, {  3,  6 },
	{  4,  8 }, {  5, 12 }, {  6, 16 }, {  7, 18 },
	{  8, 24 }, { 10, 36 }, { 11, 48 }, {  0,  0 },
};

static const struct clk_div_table cpg_sd0_div_table[] = {
	{  4,  8 }, {  5, 12 }, {  6, 16 }, {  7, 18 },
	{  8, 24 }, { 10, 36 }, { 11, 48 }, { 12, 10 },
	{  0,  0 },
};

static const struct cpg_core_clk r8a77970_core_clks[] __initconst = {
	/* External Clock Inputs */
	DEF_INPUT("extal",	CLK_EXTAL),
	DEF_INPUT("extalr",	CLK_EXTALR),

	/* Internal Core Clocks */
	DEF_BASE(".main",	CLK_MAIN, CLK_TYPE_GEN3_MAIN, CLK_EXTAL),
	DEF_BASE(".pll0",	CLK_PLL0, CLK_TYPE_GEN3_PLL0, CLK_MAIN),
	DEF_BASE(".pll1",	CLK_PLL1, CLK_TYPE_GEN3_PLL1, CLK_MAIN),
	DEF_BASE(".pll3",	CLK_PLL3, CLK_TYPE_GEN3_PLL3, CLK_MAIN),

	DEF_FIXED(".pll1_div2",	CLK_PLL1_DIV2,	CLK_PLL1,	2, 1),
	DEF_FIXED(".pll1_div4",	CLK_PLL1_DIV4,	CLK_PLL1_DIV2,	2, 1),

	/* Core Clock Outputs */
	DEF_FIXED("ztr",	R8A77970_CLK_ZTR,   CLK_PLL1_DIV2,  6, 1),
	DEF_FIXED("ztrd2",	R8A77970_CLK_ZTRD2, CLK_PLL1_DIV2, 12, 1),
	DEF_FIXED("zt",		R8A77970_CLK_ZT,    CLK_PLL1_DIV2,  4, 1),
	DEF_FIXED("zx",		R8A77970_CLK_ZX,    CLK_PLL1_DIV2,  3, 1),
	DEF_FIXED("s1d1",	R8A77970_CLK_S1D1,  CLK_PLL1_DIV2,  4, 1),
	DEF_FIXED("s1d2",	R8A77970_CLK_S1D2,  CLK_PLL1_DIV2,  8, 1),
	DEF_FIXED("s1d4",	R8A77970_CLK_S1D4,  CLK_PLL1_DIV2, 16, 1),
	DEF_FIXED("s2d1",	R8A77970_CLK_S2D1,  CLK_PLL1_DIV2,  6, 1),
	DEF_FIXED("s2d2",	R8A77970_CLK_S2D2,  CLK_PLL1_DIV2, 12, 1),
	DEF_FIXED("s2d4",	R8A77970_CLK_S2D4,  CLK_PLL1_DIV2, 24, 1),

	DEF_BASE("sd0h", R8A77970_CLK_SD0H, CLK_TYPE_R8A77970_SD0H,
		 CLK_PLL1_DIV2),
	DEF_BASE("sd0",	R8A77970_CLK_SD0, CLK_TYPE_R8A77970_SD0, CLK_PLL1_DIV2),

	DEF_FIXED("cl",		R8A77970_CLK_CL,    CLK_PLL1_DIV2, 48, 1),
	DEF_FIXED("cp",		R8A77970_CLK_CP,    CLK_EXTAL,	    2, 1),

	DEF_DIV6P1("canfd",	R8A77970_CLK_CANFD, CLK_PLL1_DIV4, 0x244),
	DEF_DIV6P1("mso",	R8A77970_CLK_MSO,   CLK_PLL1_DIV4, 0x014),
	DEF_DIV6P1("csi0",	R8A77970_CLK_CSI0,  CLK_PLL1_DIV4, 0x00c),

	DEF_FIXED("osc",	R8A77970_CLK_OSC,   CLK_PLL1_DIV2, 12*1024, 1),
	DEF_FIXED("r",		R8A77970_CLK_R,	    CLK_EXTALR,	   1, 1),
};

static const struct mssr_mod_clk r8a77970_mod_clks[] __initconst = {
	DEF_MOD("tmu4",			 121,	R8A77970_CLK_S2D2),
	DEF_MOD("tmu3",			 122,	R8A77970_CLK_S2D2),
	DEF_MOD("tmu2",			 123,	R8A77970_CLK_S2D2),
	DEF_MOD("tmu1",			 124,	R8A77970_CLK_S2D2),
	DEF_MOD("tmu0",			 125,	R8A77970_CLK_CP),
	DEF_MOD("ivcp1e",		 127,	R8A77970_CLK_S2D1),
	DEF_MOD("scif4",		 203,	R8A77970_CLK_S2D4),
	DEF_MOD("scif3",		 204,	R8A77970_CLK_S2D4),
	DEF_MOD("scif1",		 206,	R8A77970_CLK_S2D4),
	DEF_MOD("scif0",		 207,	R8A77970_CLK_S2D4),
	DEF_MOD("msiof3",		 208,	R8A77970_CLK_MSO),
	DEF_MOD("msiof2",		 209,	R8A77970_CLK_MSO),
	DEF_MOD("msiof1",		 210,	R8A77970_CLK_MSO),
	DEF_MOD("msiof0",		 211,	R8A77970_CLK_MSO),
	DEF_MOD("mfis",			 213,	R8A77970_CLK_S2D2),
	DEF_MOD("sys-dmac2",		 217,	R8A77970_CLK_S2D1),
	DEF_MOD("sys-dmac1",		 218,	R8A77970_CLK_S2D1),
	DEF_MOD("cmt3",			 300,	R8A77970_CLK_R),
	DEF_MOD("cmt2",			 301,	R8A77970_CLK_R),
	DEF_MOD("cmt1",			 302,	R8A77970_CLK_R),
	DEF_MOD("cmt0",			 303,	R8A77970_CLK_R),
	DEF_MOD("tpu0",			 304,	R8A77970_CLK_S2D4),
	DEF_MOD("sd-if",		 314,	R8A77970_CLK_SD0),
	DEF_MOD("rwdt",			 402,	R8A77970_CLK_R),
	DEF_MOD("intc-ex",		 407,	R8A77970_CLK_CP),
	DEF_MOD("intc-ap",		 408,	R8A77970_CLK_S2D1),
	DEF_MOD("hscif3",		 517,	R8A77970_CLK_S2D1),
	DEF_MOD("hscif2",		 518,	R8A77970_CLK_S2D1),
	DEF_MOD("hscif1",		 519,	R8A77970_CLK_S2D1),
	DEF_MOD("hscif0",		 520,	R8A77970_CLK_S2D1),
	DEF_MOD("thermal",		 522,	R8A77970_CLK_CP),
	DEF_MOD("pwm",			 523,	R8A77970_CLK_S2D4),
	DEF_MOD("fcpvd0",		 603,	R8A77970_CLK_S2D1),
	DEF_MOD("vspd0",		 623,	R8A77970_CLK_S2D1),
	DEF_MOD("csi40",		 716,	R8A77970_CLK_CSI0),
	DEF_MOD("du0",			 724,	R8A77970_CLK_S2D1),
	DEF_MOD("lvds",			 727,	R8A77970_CLK_S2D1),
	DEF_MOD("vin3",			 808,	R8A77970_CLK_S2D1),
	DEF_MOD("vin2",			 809,	R8A77970_CLK_S2D1),
	DEF_MOD("vin1",			 810,	R8A77970_CLK_S2D1),
	DEF_MOD("vin0",			 811,	R8A77970_CLK_S2D1),
	DEF_MOD("etheravb",		 812,	R8A77970_CLK_S2D2),
	DEF_MOD("gpio5",		 907,	R8A77970_CLK_CP),
	DEF_MOD("gpio4",		 908,	R8A77970_CLK_CP),
	DEF_MOD("gpio3",		 909,	R8A77970_CLK_CP),
	DEF_MOD("gpio2",		 910,	R8A77970_CLK_CP),
	DEF_MOD("gpio1",		 911,	R8A77970_CLK_CP),
	DEF_MOD("gpio0",		 912,	R8A77970_CLK_CP),
	DEF_MOD("can-fd",		 914,	R8A77970_CLK_S2D2),
	DEF_MOD("i2c4",			 927,	R8A77970_CLK_S2D2),
	DEF_MOD("i2c3",			 928,	R8A77970_CLK_S2D2),
	DEF_MOD("i2c2",			 929,	R8A77970_CLK_S2D2),
	DEF_MOD("i2c1",			 930,	R8A77970_CLK_S2D2),
	DEF_MOD("i2c0",			 931,	R8A77970_CLK_S2D2),
};

static const unsigned int r8a77970_crit_mod_clks[] __initconst = {
	MOD_CLK_ID(408),	/* INTC-AP (GIC) */
};


/*
 * CPG Clock Data
 */

/*
 *   MD		EXTAL		PLL0	PLL1	PLL3
 * 14 13 19	(MHz)
 *-------------------------------------------------
 * 0  0  0	16.66 x 1	x192	x192	x96
 * 0  0  1	16.66 x 1	x192	x192	x80
 * 0  1  0	20    x 1	x160	x160	x80
 * 0  1  1	20    x 1	x160	x160	x66
 * 1  0  0	27    / 2	x236	x236	x118
 * 1  0  1	27    / 2	x236	x236	x98
 * 1  1  0	33.33 / 2	x192	x192	x96
 * 1  1  1	33.33 / 2	x192	x192	x80
 */
#define CPG_PLL_CONFIG_INDEX(md)	((((md) & BIT(14)) >> 12) | \
					 (((md) & BIT(13)) >> 12) | \
					 (((md) & BIT(19)) >> 19))

static const struct rcar_gen3_cpg_pll_config cpg_pll_configs[8] __initconst = {
	/* EXTAL div	PLL1 mult/div	PLL3 mult/div */
	{ 1,		192,	1,	96,	1,	},
	{ 1,		192,	1,	80,	1,	},
	{ 1,		160,	1,	80,	1,	},
	{ 1,		160,	1,	66,	1,	},
	{ 2,		236,	1,	118,	1,	},
	{ 2,		236,	1,	98,	1,	},
	{ 2,		192,	1,	96,	1,	},
	{ 2,		192,	1,	80,	1,	},
};

static int __init r8a77970_cpg_mssr_init(struct device *dev)
{
	const struct rcar_gen3_cpg_pll_config *cpg_pll_config;
	u32 cpg_mode;
	int error;

	error = rcar_rst_read_mode_pins(&cpg_mode);
	if (error)
		return error;

	spin_lock_init(&cpg_lock);

	cpg_pll_config = &cpg_pll_configs[CPG_PLL_CONFIG_INDEX(cpg_mode)];

	return rcar_gen3_cpg_init(cpg_pll_config, CLK_EXTALR, cpg_mode);
}

static struct clk * __init r8a77970_cpg_clk_register(struct device *dev,
	const struct cpg_core_clk *core, const struct cpg_mssr_info *info,
	struct clk **clks, void __iomem *base,
	struct raw_notifier_head *notifiers)
{
	const struct clk_div_table *table;
	const struct clk *parent;
	unsigned int shift;

	switch (core->type) {
	case CLK_TYPE_R8A77970_SD0H:
		table = cpg_sd0h_div_table;
		shift = 8;
		break;
	case CLK_TYPE_R8A77970_SD0:
		table = cpg_sd0_div_table;
		shift = 4;
		break;
	default:
		return rcar_gen3_cpg_clk_register(dev, core, info, clks, base,
						  notifiers);
	}

	parent = clks[core->parent];
	if (IS_ERR(parent))
		return ERR_CAST(parent);

	return clk_register_divider_table(NULL, core->name,
					  __clk_get_name(parent), 0,
					  base + CPG_SD0CKCR,
					  shift, 4, 0, table, &cpg_lock);
}

const struct cpg_mssr_info r8a77970_cpg_mssr_info __initconst = {
	/* Core Clocks */
	.core_clks = r8a77970_core_clks,
	.num_core_clks = ARRAY_SIZE(r8a77970_core_clks),
	.last_dt_core_clk = LAST_DT_CORE_CLK,
	.num_total_core_clks = MOD_CLK_BASE,

	/* Module Clocks */
	.mod_clks = r8a77970_mod_clks,
	.num_mod_clks = ARRAY_SIZE(r8a77970_mod_clks),
	.num_hw_mod_clks = 12 * 32,

	/* Critical Module Clocks */
	.crit_mod_clks = r8a77970_crit_mod_clks,
	.num_crit_mod_clks = ARRAY_SIZE(r8a77970_crit_mod_clks),

	/* Callbacks */
	.init = r8a77970_cpg_mssr_init,
	.cpg_clk_register = r8a77970_cpg_clk_register,
};
OpenPOWER on IntegriCloud