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MIPS: BCM47XX: make reboot more relaiable 

The reboot on the BCM47XX SoCs is done, by setting the watchdog counter
to 1 and let it trigger a reboot, when it reaches 0. Some devices with
a BCM4705/BCM4785 SoC do not reboot when the counter is set to 1 and
decreased to 0 by the hardware. It looks like it works more reliable
when we set it to 3. As far as I understand the hardware, this should
not make any difference, but I do not have access to any documentation
for this SoC.
It is still not 100% reliable.

Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>
Cc: zajec5@gmail.com
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/7488/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
This commit is contained in:
Hauke Mehrtens 2014-07-28 23:53:57 +02:00 committed by Ralf Baechle
parent 1bc2d3e38e
commit 316cad5c1d
1 changed files with 2 additions and 2 deletions
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4
arch/mips/bcm47xx/setup.c
View File

@ -59,12 +59,12 @@ static void bcm47xx_machine_restart(char *command)
switch (bcm47xx_bus_type) {
#ifdef CONFIG_BCM47XX_SSB
case BCM47XX_BUS_TYPE_SSB:
ssb_watchdog_timer_set(&bcm47xx_bus.ssb, 1);
ssb_watchdog_timer_set(&bcm47xx_bus.ssb, 3);
break;
#endif
#ifdef CONFIG_BCM47XX_BCMA
case BCM47XX_BUS_TYPE_BCMA:
bcma_chipco_watchdog_timer_set(&bcm47xx_bus.bcma.bus.drv_cc, 1);
bcma_chipco_watchdog_timer_set(&bcm47xx_bus.bcma.bus.drv_cc, 3);
break;
#endif
}