6b13f685e
 김민수
BSP 최초 추가
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/*
* 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>
#include <linux/of.h>
/*
* 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, "sys_pclk", NULL, CLK_IS_ROOT,
250000000);
if (IS_ERR(clk))
pr_err("sys_pclk not registered
");
clk = clk_register_fixed_rate(NULL, "apb_pclk", NULL, CLK_IS_ROOT,
126000000);
if (IS_ERR(clk))
pr_err("apb_pclk not registered
");
clk = clk_register_fixed_rate(NULL, "uart0_pclk", NULL, CLK_IS_ROOT,
3000000);
if (IS_ERR(clk))
pr_err("uart0_pclk not registered
");
ret = clk_register_clkdev(clk, NULL, "20201000.uart");
if (ret)
pr_err("uart0_pclk alias not registered
");
clk = clk_register_fixed_rate(NULL, "uart1_pclk", NULL, CLK_IS_ROOT,
125000000);
if (IS_ERR(clk))
pr_err("uart1_pclk not registered
");
ret = clk_register_clkdev(clk, NULL, "20215000.uart");
if (ret)
pr_err("uart1_pclk alias not registered
");
}
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