clock.h
3.51 KB
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
/*
* TI C64X clock definitions
*
* Copyright (C) 2010, 2011 Texas Instruments.
* Contributed by: Mark Salter <msalter@redhat.com>
*
* Copied heavily from arm/mach-davinci/clock.h, so:
*
* Copyright (C) 2006-2007 Texas Instruments.
* Copyright (C) 2008-2009 Deep Root Systems, LLC
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*/
#ifndef _ASM_C6X_CLOCK_H
#define _ASM_C6X_CLOCK_H
#ifndef __ASSEMBLER__
#include <linux/list.h>
/* PLL/Reset register offsets */
#define PLLCTL 0x100
#define PLLM 0x110
#define PLLPRE 0x114
#define PLLDIV1 0x118
#define PLLDIV2 0x11c
#define PLLDIV3 0x120
#define PLLPOST 0x128
#define PLLCMD 0x138
#define PLLSTAT 0x13c
#define PLLALNCTL 0x140
#define PLLDCHANGE 0x144
#define PLLCKEN 0x148
#define PLLCKSTAT 0x14c
#define PLLSYSTAT 0x150
#define PLLDIV4 0x160
#define PLLDIV5 0x164
#define PLLDIV6 0x168
#define PLLDIV7 0x16c
#define PLLDIV8 0x170
#define PLLDIV9 0x174
#define PLLDIV10 0x178
#define PLLDIV11 0x17c
#define PLLDIV12 0x180
#define PLLDIV13 0x184
#define PLLDIV14 0x188
#define PLLDIV15 0x18c
#define PLLDIV16 0x190
/* PLLM register bits */
#define PLLM_PLLM_MASK 0xff
#define PLLM_VAL(x) ((x) - 1)
/* PREDIV register bits */
#define PLLPREDIV_EN BIT(15)
#define PLLPREDIV_VAL(x) ((x) - 1)
/* PLLCTL register bits */
#define PLLCTL_PLLEN BIT(0)
#define PLLCTL_PLLPWRDN BIT(1)
#define PLLCTL_PLLRST BIT(3)
#define PLLCTL_PLLDIS BIT(4)
#define PLLCTL_PLLENSRC BIT(5)
#define PLLCTL_CLKMODE BIT(8)
/* PLLCMD register bits */
#define PLLCMD_GOSTAT BIT(0)
/* PLLSTAT register bits */
#define PLLSTAT_GOSTAT BIT(0)
/* PLLDIV register bits */
#define PLLDIV_EN BIT(15)
#define PLLDIV_RATIO_MASK 0x1f
#define PLLDIV_RATIO(x) ((x) - 1)
struct pll_data;
struct clk {
struct list_head node;
struct module *owner;
const char *name;
unsigned long rate;
int usecount;
u32 flags;
struct clk *parent;
struct list_head children; /* list of children */
struct list_head childnode; /* parent's child list node */
struct pll_data *pll_data;
u32 div;
unsigned long (*recalc) (struct clk *);
int (*set_rate) (struct clk *clk, unsigned long rate);
int (*round_rate) (struct clk *clk, unsigned long rate);
};
/* Clock flags: SoC-specific flags start at BIT(16) */
#define ALWAYS_ENABLED BIT(1)
#define CLK_PLL BIT(2) /* PLL-derived clock */
#define PRE_PLL BIT(3) /* source is before PLL mult/div */
#define FIXED_DIV_PLL BIT(4) /* fixed divisor from PLL */
#define FIXED_RATE_PLL BIT(5) /* fixed ouput rate PLL */
#define MAX_PLL_SYSCLKS 16
struct pll_data {
void __iomem *base;
u32 num;
u32 flags;
u32 input_rate;
u32 bypass_delay; /* in loops */
u32 reset_delay; /* in loops */
u32 lock_delay; /* in loops */
struct clk sysclks[MAX_PLL_SYSCLKS + 1];
};
/* pll_data flag bit */
#define PLL_HAS_PRE BIT(0)
#define PLL_HAS_MUL BIT(1)
#define PLL_HAS_POST BIT(2)
#define CLK(dev, con, ck) \
{ \
.dev_id = dev, \
.con_id = con, \
.clk = ck, \
} \
extern void c6x_clks_init(struct clk_lookup *clocks);
extern int clk_register(struct clk *clk);
extern void clk_unregister(struct clk *clk);
extern void c64x_setup_clocks(void);
extern struct pll_data c6x_soc_pll1;
extern struct clk clkin1;
extern struct clk c6x_core_clk;
extern struct clk c6x_i2c_clk;
extern struct clk c6x_watchdog_clk;
extern struct clk c6x_mcbsp1_clk;
extern struct clk c6x_mcbsp2_clk;
extern struct clk c6x_mdio_clk;
#endif
#endif /* _ASM_C6X_CLOCK_H */