[PATCH] imx53-qsb: Convert to watchdog driver model

[Jason Liu]

________________________________
From: Fabio Estevam <festevam at gmail.com>
Sent: Thursday, February 22, 2024 1:39 AM
To: sbabic at denx.de <sbabic at denx.de>
Cc: Jason Liu <jason.hui.liu at nxp.com>; u-boot at lists.denx.de <u-boot at lists.denx.de>; Fabio Estevam <festevam at gmail.com>
Subject: [PATCH] imx53-qsb: 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 at gmail.com>
---
 arch/arm/dts/imx53-qsb-u-boot.dtsi | 14 ++++++++++++++
 configs/mx53loco_defconfig         |  3 +++
 2 files changed, 17 insertions(+)
 create mode 100644 arch/arm/dts/imx53-qsb-u-boot.dtsi

 Thx for the fix.

Reviewed-by: Jason Liu <jason.hui.liu at nxp.com>

diff --git a/arch/arm/dts/imx53-qsb-u-boot.dtsi b/arch/arm/dts/imx53-qsb-u-boot.dtsi
new file mode 100644
index 000000000000..593ab7caa635
--- /dev/null
+++ b/arch/arm/dts/imx53-qsb-u-boot.dtsi
@@ -0,0 +1,14 @@
+// SPDX-License-Identifier: GPL-2.0+
+
+/ {
+       wdt-reboot {
+               compatible = "wdt-reboot";
+               wdt = <&wdog1>;
+               bootph-pre-ram;
+       };
+};
+
+&wdog1 {
+       bootph-pre-ram;
+};
+
diff --git a/configs/mx53loco_defconfig b/configs/mx53loco_defconfig
index d4de8df7b49d..e2d3bc0b094e 100644
--- a/configs/mx53loco_defconfig
+++ b/configs/mx53loco_defconfig
@@ -60,6 +60,8 @@ CONFIG_POWER_FSL=y
 CONFIG_POWER_I2C=y
 CONFIG_DM_SERIAL=y
 CONFIG_MXC_UART=y
+CONFIG_SYSRESET=y
+CONFIG_SYSRESET_WATCHDOG=y
 CONFIG_USB=y
 CONFIG_USB_EHCI_MX5=y
 CONFIG_USB_STORAGE=y
@@ -67,3 +69,4 @@ CONFIG_USB_HOST_ETHER=y
 CONFIG_USB_ETHER_ASIX=y
 CONFIG_USB_ETHER_MCS7830=y
 CONFIG_USB_ETHER_SMSC95XX=y
+CONFIG_IMX_WATCHDOG=y
--
2.34.1