From: Mounika Grace Akula mounika.grace.akula@xilinx.com
This patch adds reset-on-timeout to FPD WDT which will trigger an interrupt to PMU when watchdog expiry happens and PMU takes the necessary action. If this property is not enabled, reason will not be known when watchdog expiry happens. This patch also modifies the default timeout to 60 seconds. Reason is that if u-boot enables WDT, it will set the timeout to 10 seconds and this is not enough to boot till Linux and start the WDT application in Linux. 60 seconds is the maximum safest value to boot till Linux and start the WDT application.
Users need to change this timeout value to fit their needs.
Signed-off-by: Mounika Grace Akula mounika.grace.akula@xilinx.com Signed-off-by: Michal Simek michal.simek@xilinx.com ---
arch/arm/dts/zynqmp-zcu100-revC.dts | 1 - arch/arm/dts/zynqmp.dtsi | 3 ++- 2 files changed, 2 insertions(+), 2 deletions(-)
diff --git a/arch/arm/dts/zynqmp-zcu100-revC.dts b/arch/arm/dts/zynqmp-zcu100-revC.dts index 05491e9bbc0c..0d9ad86029aa 100644 --- a/arch/arm/dts/zynqmp-zcu100-revC.dts +++ b/arch/arm/dts/zynqmp-zcu100-revC.dts @@ -332,7 +332,6 @@
&watchdog0 { status = "okay"; - reset-on-timeout; };
&xilinx_ams { diff --git a/arch/arm/dts/zynqmp.dtsi b/arch/arm/dts/zynqmp.dtsi index 831d6e1ecc4d..b28e75732f1e 100644 --- a/arch/arm/dts/zynqmp.dtsi +++ b/arch/arm/dts/zynqmp.dtsi @@ -884,7 +884,8 @@ interrupt-parent = <&gic>; interrupts = <0 113 1>; reg = <0x0 0xfd4d0000 0x0 0x1000>; - timeout-sec = <10>; + timeout-sec = <60>; + reset-on-timeout; };
xilinx_ams: ams@ffa50000 {