44 lines
1.1 KiB
C
44 lines
1.1 KiB
C
/*
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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/module.h>
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#include <linux/init.h>
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#include <linux/clk.h>
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#include <asm/io.h>
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#include "prm.h"
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#include "prm-regbits-24xx.h"
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extern void omap2_clk_prepare_for_reboot(void);
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u32 omap_prcm_get_reset_sources(void)
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{
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return prm_read_mod_reg(WKUP_MOD, RM_RSTST) & 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 wkup;
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omap2_clk_prepare_for_reboot();
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if (cpu_is_omap24xx()) {
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wkup = prm_read_mod_reg(WKUP_MOD, RM_RSTCTRL) | OMAP_RST_DPLL3;
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prm_write_mod_reg(wkup, WKUP_MOD, RM_RSTCTRL);
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}
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}
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