arm64: zynqmp: List lpd watchdog in dtsi

There are use cases where lpd watchdog can be configured for APU use. By
design this IP should be listed in zynqmp.dtsi to make sure that node is
properly enabled by DTG.

Signed-off-by: Michal Simek <michal.simek@xilinx.com>

arch/arm/dts/zynqmp-clk-ccf.dtsi

@@ -272,6 +272,10 @@
 	clocks = <&zynqmp_clk WDT>;
 };
 
+&lpd_watchdog {
+	clocks = <&zynqmp_clk LPD_WDT>;
+};
+
 &xilinx_ams {
 	clocks = <&zynqmp_clk AMS_REF>;
 };

arch/arm/dts/zynqmp-clk.dtsi

@@ -223,6 +223,10 @@
 	clocks = <&clk100>;
 };
 
+&lpd_watchdog {
+	clocks = <&clk250>;
+};
+
 &xilinx_drm {
 	clocks = <&drm_clock>;
 };

arch/arm/dts/zynqmp.dtsi

@@ -980,6 +980,15 @@
 			reset-on-timeout;
 		};
 
+		lpd_watchdog: watchdog@ff150000 {
+			compatible = "cdns,wdt-r1p2";
+			status = "disabled";
+			interrupt-parent = <&gic>;
+			interrupts = <0 52 1>;
+			reg = <0x0 0xff150000 0x0 0x1000>;
+			timeout-sec = <10>;
+		};
+
 		xilinx_ams: ams@ffa50000 {
 			compatible = "xlnx,zynqmp-ams";
 			status = "disabled";