From 06985289d452ad2423145cfed8cece61a7f8cec6 Mon Sep 17 00:00:00 2001 From: Stefan Roese Date: Thu, 11 Apr 2019 15:58:44 +0200 Subject: watchdog: Implement generic watchdog_reset() version MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit This patch tries to implement a generic watchdog_reset() function that can be used by all boards that want to service the watchdog device in U-Boot. This watchdog servicing is enabled via CONFIG_WATCHDOG. Without this approach, new boards or platforms needed to implement a board specific version of this functionality, mostly copy'ing the same code over and over again into their board or platforms code base. With this new generic function, the scattered other functions are now removed to be replaced by the generic one. The new version also enables the configuration of the watchdog timeout via the DT "timeout-sec" property (if enabled via CONFIG_OF_CONTROL). This patch also adds a new flag to the GD flags, to flag that the watchdog is ready to use and adds the pointer to the watchdog device to the GD. This enables us to remove the global "watchdog_dev" variable, which was prone to cause problems because of its potentially very early use in watchdog_reset(), even before the BSS is cleared. Signed-off-by: Stefan Roese Cc: Heiko Schocher Cc: Tom Rini Cc: Michal Simek Cc: "Marek Behún" Cc: Daniel Schwierzeck Cc: Maxim Sloyko Cc: Erik van Luijk Cc: Ryder Lee Cc: Weijie Gao Cc: Simon Glass Cc: "Álvaro Fernández Rojas" Cc: Philippe Reynes Cc: Christophe Leroy Reviewed-by: Michal Simek Tested-by: Michal Simek (on zcu100) --- drivers/watchdog/Kconfig | 1 + 1 file changed, 1 insertion(+) (limited to 'drivers/watchdog/Kconfig') diff --git a/drivers/watchdog/Kconfig b/drivers/watchdog/Kconfig index 9d7f503b69..aa8e725573 100644 --- a/drivers/watchdog/Kconfig +++ b/drivers/watchdog/Kconfig @@ -51,6 +51,7 @@ config ULP_WATCHDOG config WDT bool "Enable driver model for watchdog timer drivers" depends on DM + imply WATCHDOG help Enable driver model for watchdog timer. At the moment the API is very simple and only supports four operations: -- cgit