lk/linux-kernel-test
1
0
Fork 0
Code Issues Pull Requests Releases Wiki Activity

MIPS: TXx9: Default machine_restart using watchdog reset

Browse Source 
Add default machine_restart routine using watchdog reset of TX4927 and
TX4938.

Signed-off-by: Atsushi Nemoto <anemo@mba.ocn.ne.jp>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
This commit is contained in:
Atsushi Nemoto
2008-08-19 22:55:15 +09:00
committed by Ralf Baechle
parent d75a40e90e
commit 496a3b5c2c
4 changed files with 72 additions and 0 deletions
Download Patch File Download Diff File Expand all files Collapse all files

15
arch/mips/txx9/generic/setup.c
View File

@ -29,6 +29,7 @@
#include <asm/r4kcache.h>
#include <asm/txx9/generic.h>
#include <asm/txx9/pci.h>
#include <asm/txx9tmr.h>
#ifdef CONFIG_CPU_TX49XX
#include <asm/txx9/tx4938.h>
#endif
@ -444,6 +445,20 @@ void __init txx9_wdt_init(unsigned long base)
platform_device_register_simple("txx9wdt", -1, &res, 1);
}
void txx9_wdt_now(unsigned long base)
{
struct txx9_tmr_reg __iomem *tmrptr =
ioremap(base, sizeof(struct txx9_tmr_reg));
/* disable watch dog timer */
__raw_writel(TXx9_TMWTMR_WDIS | TXx9_TMWTMR_TWC, &tmrptr->wtmr);
__raw_writel(0, &tmrptr->tcr);
/* kick watchdog */
__raw_writel(TXx9_TMWTMR_TWIE, &tmrptr->wtmr);
__raw_writel(1, &tmrptr->cpra); /* immediate */
__raw_writel(TXx9_TMTCR_TCE | TXx9_TMTCR_CCDE | TXx9_TMTCR_TMODE_WDOG,
&tmrptr->tcr);
}
/* SPI support */
void __init txx9_spi_init(int busid, unsigned long base, int irq)
{