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