[PATCH 3/3] smegw01: Convert to watchdog driver model

[Fabio Estevam <festevam@gmail.com>]

From: Fabio Estevam <festevam@denx.de>

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@denx.de>
---
 arch/arm/dts/imx7d-smegw01-u-boot.dtsi | 13 +++++++++++++
 configs/smegw01_defconfig              |  3 +++
 2 files changed, 16 insertions(+)
 create mode 100644 arch/arm/dts/imx7d-smegw01-u-boot.dtsi

diff --git a/arch/arm/dts/imx7d-smegw01-u-boot.dtsi b/arch/arm/dts/imx7d-smegw01-u-boot.dtsi
new file mode 100644
index 000000000000..cf7ba3a95817
--- /dev/null
+++ b/arch/arm/dts/imx7d-smegw01-u-boot.dtsi
@@ -0,0 +1,13 @@
+// SPDX-License-Identifier: (GPL-2.0+ OR MIT)
+
+/ {
+	wdt-reboot {
+		compatible = "wdt-reboot";
+		wdt = <&wdog1>;
+		bootph-pre-ram;
+	};
+};
+
+&wdog1 {
+	bootph-pre-ram;
+};
diff --git a/configs/smegw01_defconfig b/configs/smegw01_defconfig
index 7f1b2bee8e16..a3d289eeca1a 100644
--- a/configs/smegw01_defconfig
+++ b/configs/smegw01_defconfig
@@ -80,5 +80,8 @@ CONFIG_DM_REGULATOR_GPIO=y
 CONFIG_SPECIFY_CONSOLE_INDEX=y
 CONFIG_DM_SERIAL=y
 CONFIG_MXC_UART=y
+CONFIG_SYSRESET=y
+CONFIG_SYSRESET_WATCHDOG=y
 CONFIG_IMX_THERMAL=y
+CONFIG_IMX_WATCHDOG=y
 # CONFIG_CMD_BOOTEFI_BOOTMGR is not set
-- 
2.34.1