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
|
/*
* arch/sh/kernel/cpu/sh4/clock-sh7757.c
*
* SH7757 support for the clock framework
*
* Copyright (C) 2009-2010 Renesas Solutions Corp.
*
* This file is subject to the terms and conditions of the GNU General Public
* License. See the file "COPYING" in the main directory of this archive
* for more details.
*/
#include <linux/init.h>
#include <linux/kernel.h>
#include <linux/io.h>
#include <linux/clkdev.h>
#include <asm/clock.h>
#include <asm/freq.h>
/*
* Default rate for the root input clock, reset this with clk_set_rate()
* from the platform code.
*/
static struct clk extal_clk = {
.rate = 48000000,
};
static unsigned long pll_recalc(struct clk *clk)
{
int multiplier;
multiplier = test_mode_pin(MODE_PIN0) ? 24 : 16;
return clk->parent->rate * multiplier;
}
static struct sh_clk_ops pll_clk_ops = {
.recalc = pll_recalc,
};
static struct clk pll_clk = {
.ops = &pll_clk_ops,
.parent = &extal_clk,
.flags = CLK_ENABLE_ON_INIT,
};
static struct clk *clks[] = {
&extal_clk,
&pll_clk,
};
static unsigned int div2[] = { 1, 1, 2, 1, 1, 4, 1, 6,
1, 1, 1, 16, 1, 24, 1, 1 };
static struct clk_div_mult_table div4_div_mult_table = {
.divisors = div2,
.nr_divisors = ARRAY_SIZE(div2),
};
static struct clk_div4_table div4_table = {
.div_mult_table = &div4_div_mult_table,
};
enum { DIV4_I, DIV4_SH, DIV4_P, DIV4_NR };
#define DIV4(_bit, _mask, _flags) \
SH_CLK_DIV4(&pll_clk, FRQCR, _bit, _mask, _flags)
struct clk div4_clks[DIV4_NR] = {
/*
* P clock is always enable, because some P clock modules is used
* by Host PC.
*/
[DIV4_P] = DIV4(0, 0x2800, CLK_ENABLE_ON_INIT),
[DIV4_SH] = DIV4(12, 0x00a0, CLK_ENABLE_ON_INIT),
[DIV4_I] = DIV4(20, 0x0004, CLK_ENABLE_ON_INIT),
};
#define MSTPCR0 0xffc80030
#define MSTPCR1 0xffc80034
#define MSTPCR2 0xffc10028
enum { MSTP004, MSTP000, MSTP114, MSTP113, MSTP112,
MSTP111, MSTP110, MSTP103, MSTP102, MSTP220,
MSTP_NR };
static struct clk mstp_clks[MSTP_NR] = {
/* MSTPCR0 */
[MSTP004] = SH_CLK_MSTP32(&div4_clks[DIV4_P], MSTPCR0, 4, 0),
[MSTP000] = SH_CLK_MSTP32(&div4_clks[DIV4_P], MSTPCR0, 0, 0),
/* MSTPCR1 */
[MSTP114] = SH_CLK_MSTP32(&div4_clks[DIV4_P], MSTPCR1, 14, 0),
[MSTP113] = SH_CLK_MSTP32(&div4_clks[DIV4_P], MSTPCR1, 13, 0),
[MSTP112] = SH_CLK_MSTP32(&div4_clks[DIV4_P], MSTPCR1, 12, 0),
[MSTP111] = SH_CLK_MSTP32(&div4_clks[DIV4_P], MSTPCR1, 11, 0),
[MSTP110] = SH_CLK_MSTP32(&div4_clks[DIV4_P], MSTPCR1, 10, 0),
[MSTP103] = SH_CLK_MSTP32(&div4_clks[DIV4_P], MSTPCR1, 3, 0),
[MSTP102] = SH_CLK_MSTP32(&div4_clks[DIV4_P], MSTPCR1, 2, 0),
/* MSTPCR2 */
[MSTP220] = SH_CLK_MSTP32(&div4_clks[DIV4_P], MSTPCR2, 20, 0),
};
static struct clk_lookup lookups[] = {
/* main clocks */
CLKDEV_CON_ID("extal", &extal_clk),
CLKDEV_CON_ID("pll_clk", &pll_clk),
/* DIV4 clocks */
CLKDEV_CON_ID("peripheral_clk", &div4_clks[DIV4_P]),
CLKDEV_CON_ID("shyway_clk", &div4_clks[DIV4_SH]),
CLKDEV_CON_ID("cpu_clk", &div4_clks[DIV4_I]),
/* MSTP32 clocks */
CLKDEV_CON_ID("sdhi0", &mstp_clks[MSTP004]),
CLKDEV_CON_ID("riic0", &mstp_clks[MSTP000]),
CLKDEV_CON_ID("riic1", &mstp_clks[MSTP000]),
CLKDEV_CON_ID("riic2", &mstp_clks[MSTP000]),
CLKDEV_CON_ID("riic3", &mstp_clks[MSTP000]),
CLKDEV_CON_ID("riic4", &mstp_clks[MSTP000]),
CLKDEV_CON_ID("riic5", &mstp_clks[MSTP000]),
CLKDEV_CON_ID("riic6", &mstp_clks[MSTP000]),
CLKDEV_CON_ID("riic7", &mstp_clks[MSTP000]),
CLKDEV_ICK_ID("tmu_fck", "sh_tmu.0", &mstp_clks[MSTP113]),
CLKDEV_ICK_ID("tmu_fck", "sh_tmu.1", &mstp_clks[MSTP114]),
CLKDEV_ICK_ID("sci_fck", "sh-sci.2", &mstp_clks[MSTP112]),
CLKDEV_ICK_ID("sci_fck", "sh-sci.1", &mstp_clks[MSTP111]),
CLKDEV_ICK_ID("sci_fck", "sh-sci.0", &mstp_clks[MSTP110]),
CLKDEV_CON_ID("usb_fck", &mstp_clks[MSTP103]),
CLKDEV_DEV_ID("renesas_usbhs.0", &mstp_clks[MSTP102]),
CLKDEV_CON_ID("mmc0", &mstp_clks[MSTP220]),
};
int __init arch_clk_init(void)
{
int i, ret = 0;
for (i = 0; i < ARRAY_SIZE(clks); i++)
ret |= clk_register(clks[i]);
for (i = 0; i < ARRAY_SIZE(lookups); i++)
clkdev_add(&lookups[i]);
if (!ret)
ret = sh_clk_div4_register(div4_clks, ARRAY_SIZE(div4_clks),
&div4_table);
if (!ret)
ret = sh_clk_mstp32_register(mstp_clks, MSTP_NR);
return ret;
}
|
