Commit | Line | Data |
---|---|---|
75fabc3f SA |
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> | |
526d239c SW |
23 | #include <linux/of.h> |
24 | ||
75fabc3f SA |
25 | /* |
26 | * These are fixed clocks. They're probably not all root clocks and it may | |
27 | * be possible to turn them on and off but until this is mapped out better | |
28 | * it's the only way they can be used. | |
29 | */ | |
30 | void __init bcm2835_init_clocks(void) | |
31 | { | |
32 | struct clk *clk; | |
33 | int ret; | |
34 | ||
35 | clk = clk_register_fixed_rate(NULL, "sys_pclk", NULL, CLK_IS_ROOT, | |
36 | 250000000); | |
0de9f23a | 37 | if (IS_ERR(clk)) |
75fabc3f SA |
38 | pr_err("sys_pclk not registered\n"); |
39 | ||
40 | clk = clk_register_fixed_rate(NULL, "apb_pclk", NULL, CLK_IS_ROOT, | |
41 | 126000000); | |
0de9f23a | 42 | if (IS_ERR(clk)) |
75fabc3f SA |
43 | pr_err("apb_pclk not registered\n"); |
44 | ||
45 | clk = clk_register_fixed_rate(NULL, "uart0_pclk", NULL, CLK_IS_ROOT, | |
46 | 3000000); | |
0de9f23a | 47 | if (IS_ERR(clk)) |
75fabc3f SA |
48 | pr_err("uart0_pclk not registered\n"); |
49 | ret = clk_register_clkdev(clk, NULL, "20201000.uart"); | |
50 | if (ret) | |
51 | pr_err("uart0_pclk alias not registered\n"); | |
52 | ||
53 | clk = clk_register_fixed_rate(NULL, "uart1_pclk", NULL, CLK_IS_ROOT, | |
54 | 125000000); | |
0de9f23a | 55 | if (IS_ERR(clk)) |
75fabc3f SA |
56 | pr_err("uart1_pclk not registered\n"); |
57 | ret = clk_register_clkdev(clk, NULL, "20215000.uart"); | |
58 | if (ret) | |
686ea585 | 59 | pr_err("uart1_pclk alias not registered\n"); |
75fabc3f | 60 | } |