wandboard: Convert to watchdog driver model

Commit 68dcbdd594d4 ("ARM: imx: Add weak default reset_cpu()") caused
the 'reset' command in U-Boot to not cause a board reset.

Fix it by switching to the watchdog driver model via sysreset, which
is the preferred method for implementing the watchdog reset.

Signed-off-by: Fabio Estevam <festevam@gmail.com>

diff --git a/arch/arm/dts/imx6qdl-wandboard-u-boot.dtsi b/arch/arm/dts/imx6qdl-wandboard-u-boot.dtsi
index 46c4b3b31f4a7fd32d064eb33e7be9458d1ff187..80921e80123f7474de6cd89d0d871ec52a5c21c5 100644 (file)
--- a/arch/arm/dts/imx6qdl-wandboard-u-boot.dtsi
+++ b/arch/arm/dts/imx6qdl-wandboard-u-boot.dtsi
@@ -6,4 +6,14 @@
        aliases {
                mmc0 = &usdhc3;
        };
+
+       wdt-reboot {
+               compatible = "wdt-reboot";
+               wdt = <&wdog1>;
+               bootph-pre-ram;
+       };
+};
+
+&wdog1 {
+       bootph-pre-ram;
 };

diff --git a/configs/wandboard_defconfig b/configs/wandboard_defconfig
index 168e2f086008603e92ab9432717756c1735aa82d..e9deab38038f71c7c057e4a9be54445a66704ed6 100644 (file)
--- a/configs/wandboard_defconfig
+++ b/configs/wandboard_defconfig
@@ -75,6 +75,8 @@ CONFIG_DM_PMIC_PFUZE100=y
 CONFIG_SCSI=y
 CONFIG_DM_SERIAL=y
 CONFIG_MXC_UART=y
+CONFIG_SYSRESET=y
+CONFIG_SYSRESET_WATCHDOG=y
 CONFIG_DM_THERMAL=y
 CONFIG_USB=y
 CONFIG_VIDEO=y
@@ -88,3 +90,4 @@ CONFIG_IMX_HDMI=y
 CONFIG_SPLASH_SCREEN=y
 CONFIG_SPLASH_SCREEN_ALIGN=y
 CONFIG_BMP_16BPP=y
+CONFIG_IMX_WATCHDOG=y