61 lines
1.9 KiB
C
61 lines
1.9 KiB
C
/*
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* Copyright (C) 2010 Broadcom
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* Copyright (C) 2012 Stephen Warren
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*/
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#include <linux/clk-provider.h>
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#include <linux/clkdev.h>
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#include <linux/clk/bcm2835.h>
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#include <linux/of.h>
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/*
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* These are fixed clocks. They're probably not all root clocks and it may
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* be possible to turn them on and off but until this is mapped out better
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* it's the only way they can be used.
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*/
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void __init bcm2835_init_clocks(void)
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{
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struct clk *clk;
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int ret;
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clk = clk_register_fixed_rate(NULL, "sys_pclk", NULL, CLK_IS_ROOT,
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250000000);
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if (IS_ERR(clk))
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pr_err("sys_pclk not registered\n");
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clk = clk_register_fixed_rate(NULL, "apb_pclk", NULL, CLK_IS_ROOT,
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126000000);
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if (IS_ERR(clk))
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pr_err("apb_pclk not registered\n");
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clk = clk_register_fixed_rate(NULL, "uart0_pclk", NULL, CLK_IS_ROOT,
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3000000);
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if (IS_ERR(clk))
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pr_err("uart0_pclk not registered\n");
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ret = clk_register_clkdev(clk, NULL, "20201000.uart");
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if (ret)
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pr_err("uart0_pclk alias not registered\n");
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clk = clk_register_fixed_rate(NULL, "uart1_pclk", NULL, CLK_IS_ROOT,
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125000000);
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if (IS_ERR(clk))
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pr_err("uart1_pclk not registered\n");
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ret = clk_register_clkdev(clk, NULL, "20215000.uart");
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if (ret)
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pr_err("uart1_pclk alias not registered\n");
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}
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