2012-09-10 23:26:15 -06:00
|
|
|
/*
|
|
|
|
* Copyright (C) 2010 Broadcom
|
|
|
|
* Copyright (C) 2012 Stephen Warren
|
|
|
|
*
|
|
|
|
* This program is free software; you can redistribute it and/or modify
|
|
|
|
* it under the terms of the GNU General Public License as published by
|
|
|
|
* the Free Software Foundation; either version 2 of the License, or
|
|
|
|
* (at your option) any later version.
|
|
|
|
*
|
|
|
|
* This program is distributed in the hope that it will be useful,
|
|
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
|
|
* GNU General Public License for more details.
|
|
|
|
*
|
|
|
|
* You should have received a copy of the GNU General Public License
|
|
|
|
* along with this program; if not, write to the Free Software
|
|
|
|
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
|
|
|
|
*/
|
|
|
|
|
|
|
|
#include <linux/clk-provider.h>
|
|
|
|
#include <linux/clkdev.h>
|
|
|
|
#include <linux/clk/bcm2835.h>
|
2012-12-24 21:55:01 -07:00
|
|
|
#include <linux/of.h>
|
|
|
|
|
2012-09-10 23:26:15 -06:00
|
|
|
/*
|
|
|
|
* These are fixed clocks. They're probably not all root clocks and it may
|
|
|
|
* be possible to turn them on and off but until this is mapped out better
|
|
|
|
* it's the only way they can be used.
|
|
|
|
*/
|
|
|
|
void __init bcm2835_init_clocks(void)
|
|
|
|
{
|
|
|
|
struct clk *clk;
|
|
|
|
int ret;
|
|
|
|
|
|
|
|
clk = clk_register_fixed_rate(NULL, "apb_pclk", NULL, CLK_IS_ROOT,
|
|
|
|
126000000);
|
2012-10-08 20:46:00 -06:00
|
|
|
if (IS_ERR(clk))
|
2012-09-10 23:26:15 -06:00
|
|
|
pr_err("apb_pclk not registered\n");
|
|
|
|
|
|
|
|
clk = clk_register_fixed_rate(NULL, "uart0_pclk", NULL, CLK_IS_ROOT,
|
|
|
|
3000000);
|
2012-10-08 20:46:00 -06:00
|
|
|
if (IS_ERR(clk))
|
2012-09-10 23:26:15 -06:00
|
|
|
pr_err("uart0_pclk not registered\n");
|
|
|
|
ret = clk_register_clkdev(clk, NULL, "20201000.uart");
|
|
|
|
if (ret)
|
|
|
|
pr_err("uart0_pclk alias not registered\n");
|
|
|
|
|
|
|
|
clk = clk_register_fixed_rate(NULL, "uart1_pclk", NULL, CLK_IS_ROOT,
|
|
|
|
125000000);
|
2012-10-08 20:46:00 -06:00
|
|
|
if (IS_ERR(clk))
|
2012-09-10 23:26:15 -06:00
|
|
|
pr_err("uart1_pclk not registered\n");
|
|
|
|
ret = clk_register_clkdev(clk, NULL, "20215000.uart");
|
|
|
|
if (ret)
|
2012-10-19 19:35:28 -06:00
|
|
|
pr_err("uart1_pclk alias not registered\n");
|
2012-09-10 23:26:15 -06:00
|
|
|
}
|