[PATCH] wandboard: Convert to watchdog driver model

[PATCH] wandboard: Convert to watchdog driver model

[Fabio Estevam]

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>
---
 arch/arm/dts/imx6qdl-wandboard-u-boot.dtsi | 10 ++++++++++
 configs/wandboard_defconfig                |  3 +++
 2 files changed, 13 insertions(+)

diff --git a/arch/arm/dts/imx6qdl-wandboard-u-boot.dtsi b/arch/arm/dts/imx6qdl-wandboard-u-boot.dtsi
index 46c4b3b31f4a..80921e80123f 100644
--- 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 168e2f086008..e9deab38038f 100644
--- 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
-- 
2.34.1

Re: [PATCH] wandboard: Convert to watchdog driver model

[Fabio Estevam]

On Fri, Jan 19, 2024 at 2:25 PM Fabio Estevam <festevam@gmail.com> wrote:
>
> 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>

Applied, thanks.