summaryrefslogtreecommitdiff
path: root/drivers/clk/mediatek/clk-mtk.h
blob: 74152ed9c6e19f7b090eed45a45c7ee977fbcded (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
/* SPDX-License-Identifier: GPL-2.0 */
/*
 * Copyright (C) 2018 MediaTek Inc.
 * Author: Ryder Lee <ryder.lee@mediatek.com>
 */

#ifndef __DRV_CLK_MTK_H
#define __DRV_CLK_MTK_H

#define CLK_XTAL			0
#define MHZ				(1000 * 1000)

#define HAVE_RST_BAR			BIT(0)
#define CLK_DOMAIN_SCPSYS		BIT(0)

#define CLK_GATE_SETCLR			BIT(0)
#define CLK_GATE_SETCLR_INV		BIT(1)
#define CLK_GATE_NO_SETCLR		BIT(2)
#define CLK_GATE_NO_SETCLR_INV		BIT(3)
#define CLK_GATE_MASK			GENMASK(3, 0)

#define CLK_PARENT_APMIXED		BIT(4)
#define CLK_PARENT_TOPCKGEN		BIT(5)
#define CLK_PARENT_MASK			GENMASK(5, 4)

/* struct mtk_pll_data - hardware-specific PLLs data */
struct mtk_pll_data {
	const int id;
	u32 reg;
	u32 pwr_reg;
	u32 en_mask;
	u32 pd_reg;
	int pd_shift;
	u32 flags;
	u32 rst_bar_mask;
	u64 fmax;
	int pcwbits;
	u32 pcw_reg;
	int pcw_shift;
};

/**
 * struct mtk_fixed_clk - fixed clocks
 *
 * @id:		index of clocks
 * @parent:	index of parnet clocks
 * @rate:	fixed rate
 */
struct mtk_fixed_clk {
	const int id;
	const int parent;
	unsigned long rate;
};

#define FIXED_CLK(_id, _parent, _rate) {		\
		.id = _id,				\
		.parent = _parent,			\
		.rate = _rate,				\
	}

/**
 * struct mtk_fixed_factor - fixed multiplier and divider clocks
 *
 * @id:		index of clocks
 * @parent:	index of parnet clocks
 * @mult:	multiplier
 * @div:	divider
 * @flag:	hardware-specific flags
 */
struct mtk_fixed_factor {
	const int id;
	const int parent;
	u32 mult;
	u32 div;
	u32 flags;
};

#define FACTOR(_id, _parent, _mult, _div, _flags) {	\
		.id = _id,				\
		.parent = _parent,			\
		.mult = _mult,				\
		.div = _div,				\
		.flags = _flags,			\
	}

/**
 * struct mtk_composite - aggregate clock of mux, divider and gate clocks
 *
 * @id:			index of clocks
 * @parent:		index of parnet clocks
 * @mux_reg:		hardware-specific mux register
 * @gate_reg:		hardware-specific gate register
 * @mux_mask:		mask to the mux bit field
 * @mux_shift:		shift to the mux bit field
 * @gate_shift:		shift to the gate bit field
 * @num_parents:	number of parent clocks
 * @flags:		hardware-specific flags
 */
struct mtk_composite {
	const int id;
	const int *parent;
	u32 mux_reg;
	u32 gate_reg;
	u32 mux_mask;
	signed char mux_shift;
	signed char gate_shift;
	signed char num_parents;
	u16 flags;
};

#define MUX_GATE_FLAGS(_id, _parents, _reg, _shift, _width, _gate,	\
		       _flags) {					\
		.id = _id,						\
		.mux_reg = _reg,					\
		.mux_shift = _shift,					\
		.mux_mask = BIT(_width) - 1,				\
		.gate_reg = _reg,					\
		.gate_shift = _gate,					\
		.parent = _parents,					\
		.num_parents = ARRAY_SIZE(_parents),			\
		.flags = _flags,					\
	}

#define MUX_GATE(_id, _parents, _reg, _shift, _width, _gate)		\
	MUX_GATE_FLAGS(_id, _parents, _reg, _shift, _width, _gate, 0)

#define MUX(_id, _parents, _reg, _shift, _width) {			\
		.id = _id,						\
		.mux_reg = _reg,					\
		.mux_shift = _shift,					\
		.mux_mask = BIT(_width) - 1,				\
		.gate_shift = -1,					\
		.parent = _parents,					\
		.num_parents = ARRAY_SIZE(_parents),			\
		.flags = 0,						\
	}

struct mtk_gate_regs {
	u32 sta_ofs;
	u32 clr_ofs;
	u32 set_ofs;
};

/**
 * struct mtk_gate - gate clocks
 *
 * @id:		index of gate clocks
 * @parent:	index of parnet clocks
 * @regs:	hardware-specific mux register
 * @shift:	shift to the gate bit field
 * @flags:	hardware-specific flags
 */
struct mtk_gate {
	const int id;
	const int parent;
	const struct mtk_gate_regs *regs;
	int shift;
	u32 flags;
};

/* struct mtk_clk_tree - clock tree */
struct mtk_clk_tree {
	unsigned long xtal_rate;
	unsigned long xtal2_rate;
	const int fdivs_offs;
	const int muxes_offs;
	const struct mtk_pll_data *plls;
	const struct mtk_fixed_clk *fclks;
	const struct mtk_fixed_factor *fdivs;
	const struct mtk_composite *muxes;
};

struct mtk_clk_priv {
	void __iomem *base;
	const struct mtk_clk_tree *tree;
};

struct mtk_cg_priv {
	void __iomem *base;
	const struct mtk_clk_tree *tree;
	const struct mtk_gate *gates;
};

extern const struct clk_ops mtk_clk_apmixedsys_ops;
extern const struct clk_ops mtk_clk_topckgen_ops;
extern const struct clk_ops mtk_clk_gate_ops;

int mtk_common_clk_init(struct udevice *dev,
			const struct mtk_clk_tree *tree);
int mtk_common_clk_gate_init(struct udevice *dev,
			     const struct mtk_clk_tree *tree,
			     const struct mtk_gate *gates);

#endif /* __DRV_CLK_MTK_H */