From 0d7b101404f7bedcf3f448c1667c3744551cd9ee Mon Sep 17 00:00:00 2001 From: Anton Vorontsov Date: Thu, 3 Jul 2008 23:51:36 -0700 Subject: [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 Tested-by: Jochen Friedrich Cc: Kumar Gala Signed-off-by: Wim Van Sebroeck Signed-off-by: Andrew Morton --- drivers/watchdog/Kconfig | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) (limited to 'drivers/watchdog/Kconfig') diff --git a/drivers/watchdog/Kconfig b/drivers/watchdog/Kconfig index 01e33e80eac0..50d44b4b466b 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 -- cgit v1.2.1