[PATCH v1 7/7] toradex: imx6*: fix reset using wdt-reboot driver

[Francesco Dolcini]

From: Parth Pancholi <parth.pancholi at toradex.com>

commit 68dcbdd594d4 ("ARM: imx: Add weak default reset_cpu()")
introduced a regression that 'reset' command unable to reset
imx6 and imx6ull based Toradex's modules in the u-boot.

This change enables a watchdog-based sysreset driver for
Toradex's colibri-imx6, colibri-imx6ull (with nand and emmc)
and apalis-imx6 which solves the reset command regression on
these modules.

Fixes: 68dcbdd594d4 ("ARM: imx: Add weak default reset_cpu()")
Signed-off-by: Parth Pancholi <parth.pancholi at toradex.com>
Signed-off-by: Francesco Dolcini <francesco.dolcini at toradex.com>
---
 arch/arm/dts/imx6dl-colibri-eval-v3-u-boot.dtsi  |  6 ++++++
 arch/arm/dts/imx6q-apalis-eval-u-boot.dtsi       |  6 ++++++
 arch/arm/dts/imx6ull-colibri-eval-v3-u-boot.dtsi | 10 ++++++++++
 configs/apalis_imx6_defconfig                    |  3 +++
 configs/colibri-imx6ull-emmc_defconfig           |  3 +++
 configs/colibri-imx6ull_defconfig                |  3 +++
 configs/colibri_imx6_defconfig                   |  3 +++
 7 files changed, 34 insertions(+)

diff --git a/arch/arm/dts/imx6dl-colibri-eval-v3-u-boot.dtsi b/arch/arm/dts/imx6dl-colibri-eval-v3-u-boot.dtsi
index 5a91d0aca204..44baaa803243 100644
--- a/arch/arm/dts/imx6dl-colibri-eval-v3-u-boot.dtsi
+++ b/arch/arm/dts/imx6dl-colibri-eval-v3-u-boot.dtsi
@@ -20,6 +20,12 @@
 	sysinfo {
 		compatible = "toradex,sysinfo";
 	};
+
+	wdt-reboot {
+		compatible = "wdt-reboot";
+		wdt = <&wdog1>;
+		bootph-pre-ram;
+	};
 };
 
 &wdog1 {
diff --git a/arch/arm/dts/imx6q-apalis-eval-u-boot.dtsi b/arch/arm/dts/imx6q-apalis-eval-u-boot.dtsi
index 59412635420a..103605ac930d 100644
--- a/arch/arm/dts/imx6q-apalis-eval-u-boot.dtsi
+++ b/arch/arm/dts/imx6q-apalis-eval-u-boot.dtsi
@@ -23,6 +23,12 @@
 	sysinfo {
 		compatible = "toradex,sysinfo";
 	};
+
+	wdt-reboot {
+		compatible = "wdt-reboot";
+		wdt = <&wdog1>;
+		bootph-pre-ram;
+	};
 };
 
 &wdog1 {
diff --git a/arch/arm/dts/imx6ull-colibri-eval-v3-u-boot.dtsi b/arch/arm/dts/imx6ull-colibri-eval-v3-u-boot.dtsi
index 731814216e1f..8494b1a2c603 100644
--- a/arch/arm/dts/imx6ull-colibri-eval-v3-u-boot.dtsi
+++ b/arch/arm/dts/imx6ull-colibri-eval-v3-u-boot.dtsi
@@ -13,6 +13,12 @@
 	sysinfo {
 		compatible = "toradex,sysinfo";
 	};
+
+	wdt-reboot {
+		compatible = "wdt-reboot";
+		wdt = <&wdog1>;
+		bootph-pre-ram;
+	};
 };
 
 &pinctrl_uart1 {
@@ -58,3 +64,7 @@
 		};
 	};
 };
+
+&wdog1 {
+	bootph-pre-ram;
+};
diff --git a/configs/apalis_imx6_defconfig b/configs/apalis_imx6_defconfig
index 492550607035..fae3dc322471 100644
--- a/configs/apalis_imx6_defconfig
+++ b/configs/apalis_imx6_defconfig
@@ -96,6 +96,8 @@ CONFIG_DM_I2C=y
 CONFIG_SPL_SYS_I2C_LEGACY=y
 CONFIG_SYS_I2C_MXC=y
 CONFIG_SYS_MXC_I2C3_SPEED=400000
+CONFIG_SYSRESET=y
+CONFIG_SYSRESET_WATCHDOG=y
 CONFIG_SUPPORT_EMMC_BOOT=y
 CONFIG_FSL_USDHC=y
 CONFIG_PHYLIB=y
@@ -113,6 +115,7 @@ CONFIG_DM_REGULATOR_FIXED=y
 CONFIG_SCSI=y
 CONFIG_MXC_UART=y
 CONFIG_IMX_THERMAL=y
+CONFIG_IMX_WATCHDOG=y
 CONFIG_USB=y
 CONFIG_SPL_USB_HOST=y
 CONFIG_USB_MAX_CONTROLLER_COUNT=2
diff --git a/configs/colibri-imx6ull-emmc_defconfig b/configs/colibri-imx6ull-emmc_defconfig
index 2b04855770ab..c4ecdc03e2a8 100644
--- a/configs/colibri-imx6ull-emmc_defconfig
+++ b/configs/colibri-imx6ull-emmc_defconfig
@@ -69,6 +69,8 @@ CONFIG_FASTBOOT_BUF_ADDR=0x81100000
 CONFIG_FASTBOOT_UUU_SUPPORT=y
 CONFIG_DM_I2C=y
 CONFIG_SYS_I2C_MXC=y
+CONFIG_SYSRESET=y
+CONFIG_SYSRESET_WATCHDOG=y
 CONFIG_SUPPORT_EMMC_BOOT=y
 CONFIG_FSL_USDHC=y
 CONFIG_PHYLIB=y
@@ -83,6 +85,7 @@ CONFIG_DM_REGULATOR_FIXED=y
 CONFIG_DM_SERIAL=y
 CONFIG_MXC_UART=y
 CONFIG_IMX_THERMAL=y
+CONFIG_IMX_WATCHDOG=y
 CONFIG_USB=y
 CONFIG_USB_GADGET=y
 CONFIG_USB_GADGET_MANUFACTURER="Toradex"
diff --git a/configs/colibri-imx6ull_defconfig b/configs/colibri-imx6ull_defconfig
index 959930cf2e31..9c68d96b2fd7 100644
--- a/configs/colibri-imx6ull_defconfig
+++ b/configs/colibri-imx6ull_defconfig
@@ -80,6 +80,8 @@ CONFIG_FASTBOOT_BUF_ADDR=0x81100000
 CONFIG_FASTBOOT_UUU_SUPPORT=y
 CONFIG_DM_I2C=y
 CONFIG_SYS_I2C_MXC=y
+CONFIG_SYSRESET=y
+CONFIG_SYSRESET_WATCHDOG=y
 CONFIG_FSL_USDHC=y
 CONFIG_MTD=y
 CONFIG_DM_MTD=y
@@ -100,6 +102,7 @@ CONFIG_DM_REGULATOR_FIXED=y
 CONFIG_DM_SERIAL=y
 CONFIG_MXC_UART=y
 CONFIG_IMX_THERMAL=y
+CONFIG_IMX_WATCHDOG=y
 CONFIG_USB=y
 CONFIG_USB_GADGET=y
 CONFIG_USB_GADGET_MANUFACTURER="Toradex"
diff --git a/configs/colibri_imx6_defconfig b/configs/colibri_imx6_defconfig
index 55c71a000d00..74c54011989c 100644
--- a/configs/colibri_imx6_defconfig
+++ b/configs/colibri_imx6_defconfig
@@ -22,6 +22,8 @@ CONFIG_SYS_MONITOR_LEN=409600
 CONFIG_SPL_MMC=y
 CONFIG_SPL_SERIAL=y
 CONFIG_SPL=y
+CONFIG_SYSRESET=y
+CONFIG_SYSRESET_WATCHDOG=y
 CONFIG_CMD_HDMIDETECT=y
 CONFIG_SYS_LOAD_ADDR=0x14200000
 CONFIG_SYS_MEMTEST_START=0x10000000
@@ -109,6 +111,7 @@ CONFIG_DM_REGULATOR_PFUZE100=y
 CONFIG_DM_REGULATOR_FIXED=y
 CONFIG_MXC_UART=y
 CONFIG_IMX_THERMAL=y
+CONFIG_IMX_WATCHDOG=y
 CONFIG_USB=y
 CONFIG_SPL_USB_HOST=y
 CONFIG_USB_MAX_CONTROLLER_COUNT=2
-- 
2.39.2