41 lines
1 KiB
C
41 lines
1 KiB
C
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/*
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* linux/arch/arm/mach-omap2/prcm.c
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*
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* OMAP 24xx Power Reset and Clock Management (PRCM) functions
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*
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* Copyright (C) 2005 Nokia Corporation
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*
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* Written by Tony Lindgren <tony.lindgren@nokia.com>
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*
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* Some pieces of code Copyright (C) 2005 Texas Instruments, Inc.
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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 version 2 as
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* published by the Free Software Foundation.
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*/
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#include <linux/config.h>
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#include <linux/module.h>
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#include <linux/init.h>
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#include <linux/clk.h>
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#include "prcm-regs.h"
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u32 omap_prcm_get_reset_sources(void)
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{
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return RM_RSTST_WKUP & 0x7f;
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}
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EXPORT_SYMBOL(omap_prcm_get_reset_sources);
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/* Resets clock rates and reboots the system. Only called from system.h */
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void omap_prcm_arch_reset(char mode)
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{
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u32 rate;
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struct clk *vclk, *sclk;
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vclk = clk_get(NULL, "virt_prcm_set");
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sclk = clk_get(NULL, "sys_ck");
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rate = clk_get_rate(sclk);
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clk_set_rate(vclk, rate); /* go to bypass for OMAP limitation */
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RM_RSTCTRL_WKUP |= 2;
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}
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