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1 | /* |
2 | * Copyright (C) 2010 Broadcom |
3 | * Copyright (C) 2012 Stephen Warren |
4 | * |
5 | * This program is free software; you can redistribute it and/or modify |
6 | * it under the terms of the GNU General Public License as published by |
7 | * the Free Software Foundation; either version 2 of the License, or |
8 | * (at your option) any later version. |
9 | * |
10 | * This program is distributed in the hope that it will be useful, |
11 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
12 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
13 | * GNU General Public License for more details. |
14 | * |
15 | * You should have received a copy of the GNU General Public License |
16 | * along with this program; if not, write to the Free Software |
17 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
18 | */ |
19 | |
20 | #include <linux/clk-provider.h> |
21 | #include <linux/clkdev.h> |
22 | #include <linux/clk/bcm2835.h> |
23 | #include <linux/clk-provider.h> |
24 | #include <linux/of.h> |
25 | |
26 | static const __initconst struct of_device_id clk_match[] = { |
27 | { .compatible = "fixed-clock", .data = of_fixed_clk_setup, }, |
28 | { } |
29 | }; |
30 | |
31 | /* |
32 | * These are fixed clocks. They're probably not all root clocks and it may |
33 | * be possible to turn them on and off but until this is mapped out better |
34 | * it's the only way they can be used. |
35 | */ |
36 | void __init bcm2835_init_clocks(void) |
37 | { |
38 | struct clk *clk; |
39 | int ret; |
40 | |
41 | clk = clk_register_fixed_rate(NULL, "sys_pclk", NULL, CLK_IS_ROOT, |
42 | 250000000); |
43 | if (IS_ERR(clk)) |
44 | pr_err("sys_pclk not registered\n"); |
45 | |
46 | clk = clk_register_fixed_rate(NULL, "apb_pclk", NULL, CLK_IS_ROOT, |
47 | 126000000); |
48 | if (IS_ERR(clk)) |
49 | pr_err("apb_pclk not registered\n"); |
50 | |
51 | clk = clk_register_fixed_rate(NULL, "uart0_pclk", NULL, CLK_IS_ROOT, |
52 | 3000000); |
53 | if (IS_ERR(clk)) |
54 | pr_err("uart0_pclk not registered\n"); |
55 | ret = clk_register_clkdev(clk, NULL, "20201000.uart"); |
56 | if (ret) |
57 | pr_err("uart0_pclk alias not registered\n"); |
58 | |
59 | clk = clk_register_fixed_rate(NULL, "uart1_pclk", NULL, CLK_IS_ROOT, |
60 | 125000000); |
61 | if (IS_ERR(clk)) |
62 | pr_err("uart1_pclk not registered\n"); |
63 | ret = clk_register_clkdev(clk, NULL, "20215000.uart"); |
64 | if (ret) |
65 | pr_err("uart1_pclk alias not registered\n"); |
66 | |
67 | of_clk_init(clk_match); |
68 | } |
69 |
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Tags:
od-2011-09-04
od-2011-09-18
v2.6.34-rc5
v2.6.34-rc6
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v3.9