commit 73a6e706002cc9e90adff69198755ee957723392
author ETIENNE DUBLE <etienne.duble@imag.fr> Wed Jan 25 10:57:28 2023 +0100
committer Stefan Roese <sr@denx.de> Tue Apr 18 08:42:43 2023 +0200
tree 4e9b47e43d89e79232a9f7b80ed5ee3ad804d9a6
parent 52992a75cd1350d364ba49881732493b6831aca5

watchdog: Add a watchdog driver for Raspberry Pi boards

This driver supports the bcm2835 watchdog found on
Raspberry Pi boards.
It is derived from the Linux driver and was tested
on two Raspberry Pi board versions (B+ and 3B+).

Signed-off-by: Etienne Dublé <etienne.duble@imag.fr>
Reviewed-by: Stefan Roese <sr@denx.de>

drivers/watchdog/Kconfig

diff --git a/drivers/watchdog/Kconfig b/drivers/watchdog/Kconfig
index b5ac8f7..35c42dd 100644
--- a/drivers/watchdog/Kconfig
+++ b/drivers/watchdog/Kconfig
@@ -31,6 +31,7 @@
 	default 30000 if ARCH_SOCFPGA
 	default 16000 if ARCH_SUNXI
 	default 5376 if ULP_WATCHDOG
+	default 15000 if ARCH_BCM283X
 	default 60000
 	help
 	  Watchdog timeout in msec
@@ -327,6 +328,14 @@
 	help
 	  Enable support for the watchdog timer in Allwinner sunxi SoCs.
 
+config WDT_BCM2835
+	bool "Broadcom 2835 watchdog timer support"
+	depends on WDT && ARCH_BCM283X
+	default y
+	help
+	  Enable support for the watchdog timer in Broadcom 283X SoCs such
+	  as Raspberry Pi boards.
+
 config XILINX_TB_WATCHDOG
 	bool "Xilinx Axi watchdog timer support"
 	depends on WDT