clk-efm32gg.c
3.19 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
/*
* Copyright (C) 2013 Pengutronix
* Uwe Kleine-Koenig <u.kleine-koenig@pengutronix.de>
*
* 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.
*/
#include <linux/clk.h>
#include <linux/io.h>
#include <linux/clk-provider.h>
#include <linux/of.h>
#include <linux/of_address.h>
#include <dt-bindings/clock/efm32-cmu.h>
#define CMU_HFPERCLKEN0 0x44
static struct clk *clk[37];
static struct clk_onecell_data clk_data = {
.clks = clk,
.clk_num = ARRAY_SIZE(clk),
};
static int __init efm32gg_cmu_init(struct device_node *np)
{
int i;
void __iomem *base;
for (i = 0; i < ARRAY_SIZE(clk); ++i)
clk[i] = ERR_PTR(-ENOENT);
base = of_iomap(np, 0);
if (!base) {
pr_warn("Failed to map address range for efm32gg,cmu node\n");
return -EADDRNOTAVAIL;
}
clk[clk_HFXO] = clk_register_fixed_rate(NULL, "HFXO", NULL,
CLK_IS_ROOT, 48000000);
clk[clk_HFPERCLKUSART0] = clk_register_gate(NULL, "HFPERCLK.USART0",
"HFXO", 0, base + CMU_HFPERCLKEN0, 0, 0, NULL);
clk[clk_HFPERCLKUSART1] = clk_register_gate(NULL, "HFPERCLK.USART1",
"HFXO", 0, base + CMU_HFPERCLKEN0, 1, 0, NULL);
clk[clk_HFPERCLKUSART2] = clk_register_gate(NULL, "HFPERCLK.USART2",
"HFXO", 0, base + CMU_HFPERCLKEN0, 2, 0, NULL);
clk[clk_HFPERCLKUART0] = clk_register_gate(NULL, "HFPERCLK.UART0",
"HFXO", 0, base + CMU_HFPERCLKEN0, 3, 0, NULL);
clk[clk_HFPERCLKUART1] = clk_register_gate(NULL, "HFPERCLK.UART1",
"HFXO", 0, base + CMU_HFPERCLKEN0, 4, 0, NULL);
clk[clk_HFPERCLKTIMER0] = clk_register_gate(NULL, "HFPERCLK.TIMER0",
"HFXO", 0, base + CMU_HFPERCLKEN0, 5, 0, NULL);
clk[clk_HFPERCLKTIMER1] = clk_register_gate(NULL, "HFPERCLK.TIMER1",
"HFXO", 0, base + CMU_HFPERCLKEN0, 6, 0, NULL);
clk[clk_HFPERCLKTIMER2] = clk_register_gate(NULL, "HFPERCLK.TIMER2",
"HFXO", 0, base + CMU_HFPERCLKEN0, 7, 0, NULL);
clk[clk_HFPERCLKTIMER3] = clk_register_gate(NULL, "HFPERCLK.TIMER3",
"HFXO", 0, base + CMU_HFPERCLKEN0, 8, 0, NULL);
clk[clk_HFPERCLKACMP0] = clk_register_gate(NULL, "HFPERCLK.ACMP0",
"HFXO", 0, base + CMU_HFPERCLKEN0, 9, 0, NULL);
clk[clk_HFPERCLKACMP1] = clk_register_gate(NULL, "HFPERCLK.ACMP1",
"HFXO", 0, base + CMU_HFPERCLKEN0, 10, 0, NULL);
clk[clk_HFPERCLKI2C0] = clk_register_gate(NULL, "HFPERCLK.I2C0",
"HFXO", 0, base + CMU_HFPERCLKEN0, 11, 0, NULL);
clk[clk_HFPERCLKI2C1] = clk_register_gate(NULL, "HFPERCLK.I2C1",
"HFXO", 0, base + CMU_HFPERCLKEN0, 12, 0, NULL);
clk[clk_HFPERCLKGPIO] = clk_register_gate(NULL, "HFPERCLK.GPIO",
"HFXO", 0, base + CMU_HFPERCLKEN0, 13, 0, NULL);
clk[clk_HFPERCLKVCMP] = clk_register_gate(NULL, "HFPERCLK.VCMP",
"HFXO", 0, base + CMU_HFPERCLKEN0, 14, 0, NULL);
clk[clk_HFPERCLKPRS] = clk_register_gate(NULL, "HFPERCLK.PRS",
"HFXO", 0, base + CMU_HFPERCLKEN0, 15, 0, NULL);
clk[clk_HFPERCLKADC0] = clk_register_gate(NULL, "HFPERCLK.ADC0",
"HFXO", 0, base + CMU_HFPERCLKEN0, 16, 0, NULL);
clk[clk_HFPERCLKDAC0] = clk_register_gate(NULL, "HFPERCLK.DAC0",
"HFXO", 0, base + CMU_HFPERCLKEN0, 17, 0, NULL);
return of_clk_add_provider(np, of_clk_src_onecell_get, &clk_data);
}
CLK_OF_DECLARE(efm32ggcmu, "efm32gg,cmu", efm32gg_cmu_init);