Enable watchdog on zcu100 to make sure if there is a bug in the u-boot there is proper reset. Watchdog expires and PMU fw is informed and based on setting proper action is taken.
The patch is enabling reset-on-timeout feature and also fixing fixed clock rate for watchdog where 100MHz is max (and also default) clock value. Signed-off-by: Michal Simek <[email protected]> --- arch/arm/dts/zynqmp-clk.dtsi | 2 +- arch/arm/dts/zynqmp-zcu100-revC.dts | 1 + configs/xilinx_zynqmp_zcu100_revC_defconfig | 2 ++ 3 files changed, 4 insertions(+), 1 deletion(-) diff --git a/arch/arm/dts/zynqmp-clk.dtsi b/arch/arm/dts/zynqmp-clk.dtsi index a8664e81870e..a795efdc15c8 100644 --- a/arch/arm/dts/zynqmp-clk.dtsi +++ b/arch/arm/dts/zynqmp-clk.dtsi @@ -219,7 +219,7 @@ }; &watchdog0 { - clocks = <&clk250>; + clocks = <&clk100>; }; &xilinx_drm { diff --git a/arch/arm/dts/zynqmp-zcu100-revC.dts b/arch/arm/dts/zynqmp-zcu100-revC.dts index 38b8753da114..da5af96051d1 100644 --- a/arch/arm/dts/zynqmp-zcu100-revC.dts +++ b/arch/arm/dts/zynqmp-zcu100-revC.dts @@ -332,6 +332,7 @@ &watchdog0 { status = "okay"; + reset-on-timeout; }; &xilinx_ams { diff --git a/configs/xilinx_zynqmp_zcu100_revC_defconfig b/configs/xilinx_zynqmp_zcu100_revC_defconfig index 348c8c77cd41..db6ed1aa86eb 100644 --- a/configs/xilinx_zynqmp_zcu100_revC_defconfig +++ b/configs/xilinx_zynqmp_zcu100_revC_defconfig @@ -80,5 +80,7 @@ CONFIG_USB_ULPI=y CONFIG_USB_STORAGE=y CONFIG_USB_GADGET=y CONFIG_USB_GADGET_DOWNLOAD=y +CONFIG_WDT=y +CONFIG_WDT_CDNS=y CONFIG_OF_LIBFDT_OVERLAY=y CONFIG_EFI_LOADER_BOUNCE_BUFFER=y -- 2.17.0 _______________________________________________ U-Boot mailing list [email protected] https://lists.denx.de/listinfo/u-boot
