blob: 67ad16b20b8119cc079e63d5dc7a9da0c79c567c [file] [log] [blame]
Simon Arlott75fabc32012-09-10 23:26:15 -06001/*
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
24/*
25 * These are fixed clocks. They're probably not all root clocks and it may
26 * be possible to turn them on and off but until this is mapped out better
27 * it's the only way they can be used.
28 */
29void __init bcm2835_init_clocks(void)
30{
31 struct clk *clk;
32 int ret;
33
34 clk = clk_register_fixed_rate(NULL, "sys_pclk", NULL, CLK_IS_ROOT,
35 250000000);
36 if (!clk)
37 pr_err("sys_pclk not registered\n");
38
39 clk = clk_register_fixed_rate(NULL, "apb_pclk", NULL, CLK_IS_ROOT,
40 126000000);
41 if (!clk)
42 pr_err("apb_pclk not registered\n");
43
44 clk = clk_register_fixed_rate(NULL, "uart0_pclk", NULL, CLK_IS_ROOT,
45 3000000);
46 if (!clk)
47 pr_err("uart0_pclk not registered\n");
48 ret = clk_register_clkdev(clk, NULL, "20201000.uart");
49 if (ret)
50 pr_err("uart0_pclk alias not registered\n");
51
52 clk = clk_register_fixed_rate(NULL, "uart1_pclk", NULL, CLK_IS_ROOT,
53 125000000);
54 if (!clk)
55 pr_err("uart1_pclk not registered\n");
56 ret = clk_register_clkdev(clk, NULL, "20215000.uart");
57 if (ret)
58 pr_err("uart0_pclk alias not registered\n");
59}