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authorAnton Vorontsov <avorontsov@ru.mvista.com>2008-07-03 23:51:36 -0700
committerWim Van Sebroeck <wim@iguana.be>2008-08-06 13:08:47 +0000
commit0d7b101404f7bedcf3f448c1667c3744551cd9ee (patch)
treeb38363e88e0b02c4bdbc265c05b3fb770fe0b143 /drivers/watchdog/Kconfig
parentcb55d282a0d2156e7d40ee81726ab16b569e96d7 (diff)
downloadop-kernel-dev-0d7b101404f7bedcf3f448c1667c3744551cd9ee.zip
op-kernel-dev-0d7b101404f7bedcf3f448c1667c3744551cd9ee.tar.gz
[WATCHDOG] mpc8xxx_wdt: add support for MPC8xx watchdogs
The mpc8xxx_wdt driver is using two registers: SWSRR to push magic numbers, and SWCRR to control the watchdog. Both registers are available on the MPC8xx, and seem to have the same offsets and semantics as in MPC83xx/MPC86xx watchdogs. The only difference is prescale value. So this driver simply works on the MPC8xx CPUs. One quirk is needed for the MPC8xx, though. It has small prescale value and slow CPU, so the watchdog resets board prior to the driver has time to load. To solve this we should split initialization in two steps: start ping the watchdog early, and register the watchdog userspace interface later. MPC823 seem to be the first CPU in MPC8xx line, so we use fsl,mpc823-wdt compatible matching. Signed-off-by: Anton Vorontsov <avorontsov@ru.mvista.com> Tested-by: Jochen Friedrich <jochen@scram.de> Cc: Kumar Gala <galak@kernel.crashing.org> Signed-off-by: Wim Van Sebroeck <wim@iguana.be> Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Diffstat (limited to 'drivers/watchdog/Kconfig')
-rw-r--r--drivers/watchdog/Kconfig3
1 files changed, 2 insertions, 1 deletions
diff --git a/drivers/watchdog/Kconfig b/drivers/watchdog/Kconfig
index 01e33e8..50d44b4 100644
--- a/drivers/watchdog/Kconfig
+++ b/drivers/watchdog/Kconfig
@@ -697,10 +697,11 @@ config 8xx_WDT
config 8xxx_WDT
tristate "MPC8xxx Platform Watchdog Timer"
- depends on PPC_83xx || PPC_86xx
+ depends on PPC_8xx || PPC_83xx || PPC_86xx
help
This driver is for a SoC level watchdog that exists on some
Freescale PowerPC processors. So far this driver supports:
+ - MPC8xx watchdogs
- MPC83xx watchdogs
- MPC86xx watchdogs
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