toradex: imx6*: fix reset using wdt-reboot driver

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.

Acked-by: Marcel Ziswiler <marcel.ziswiler@toradex.com>
Fixes: 68dcbdd594d4 ("ARM: imx: Add weak default reset_cpu()")
Signed-off-by: Parth Pancholi <parth.pancholi@toradex.com>
Signed-off-by: Francesco Dolcini <francesco.dolcini@toradex.com>
Reviewed-by: Fabio Estevam <festevam@gmail.com>

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 5a91d0a..44baaa8 100644 (file)
--- 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 5941263..103605a 100644 (file)
--- 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 7318142..8494b1a 100644 (file)
--- 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 4925506..fae3dc3 100644 (file)
--- 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 2b04855..c4ecdc0 100644 (file)
--- 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 959930c..9c68d96 100644 (file)
--- 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 55c71a0..74c5401 100644 (file)
--- 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