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/of.h>
24
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 */
30void __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);
37	if (IS_ERR(clk))
38		pr_err("sys_pclk not registered\n");
39
40	clk = clk_register_fixed_rate(NULL, "apb_pclk", NULL, CLK_IS_ROOT,
41					126000000);
42	if (IS_ERR(clk))
43		pr_err("apb_pclk not registered\n");
44
45	clk = clk_register_fixed_rate(NULL, "uart0_pclk", NULL, CLK_IS_ROOT,
46					3000000);
47	if (IS_ERR(clk))
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);
55	if (IS_ERR(clk))
56		pr_err("uart1_pclk not registered\n");
57	ret = clk_register_clkdev(clk, NULL, "20215000.uart");
58	if (ret)
59		pr_err("uart1_pclk alias not registered\n");
60}
61