From 76534860f108b812926a4fbfbdadbfa9cdec89d0 Mon Sep 17 00:00:00 2001 From: Wenyou Yang Date: Thu, 6 Aug 2015 18:16:46 +0800 Subject: watchdog: add a driver to support SAMA5D4 watchdog timer From SAMA5D4, the watchdog timer is upgrated with a new feature, which is describled as in the datasheet, "WDT_MR can be written until a LOCKMR command is issued in WDT_CR". That is to say, as long as the bootstrap and u-boot don't issue a LOCKMR command, WDT_MR can be written more than once in the driver. So the SAMA5D4 watchdog driver's implementation is different from the at91sam9260 watchdog driver implemented in file at91sam9_wdt.c. The user application open the device file to enable the watchdog timer hardware, and close to disable it, and set the watchdog timer timeout by seting WDV and WDD fields of WDT_MR register, and ping the watchdog by issuing WDRSTT command to WDT_CR register with hard-coded key. Signed-off-by: Wenyou Yang Reviewed-by: Guenter Roeck Signed-off-by: Wim Van Sebroeck --- drivers/watchdog/Makefile | 1 + 1 file changed, 1 insertion(+) (limited to 'drivers/watchdog/Makefile') diff --git a/drivers/watchdog/Makefile b/drivers/watchdog/Makefile index 1b0ef48bf19a..0c616e3f67bb 100644 --- a/drivers/watchdog/Makefile +++ b/drivers/watchdog/Makefile @@ -41,6 +41,7 @@ obj-$(CONFIG_IXP4XX_WATCHDOG) += ixp4xx_wdt.o obj-$(CONFIG_KS8695_WATCHDOG) += ks8695_wdt.o obj-$(CONFIG_S3C2410_WATCHDOG) += s3c2410_wdt.o obj-$(CONFIG_SA1100_WATCHDOG) += sa1100_wdt.o +obj-$(CONFIG_SAMA5D4_WATCHDOG) += sama5d4_wdt.o obj-$(CONFIG_DW_WATCHDOG) += dw_wdt.o obj-$(CONFIG_EP93XX_WATCHDOG) += ep93xx_wdt.o obj-$(CONFIG_PNX4008_WATCHDOG) += pnx4008_wdt.o -- cgit v1.2.3