arm64: dts: renesas: r8a779f0: Add RWDT node

Add a device node for the RCLK Watchdog Timer (RWDT) on the Renesas
R-Car S4-8 (R8A779F0) SoC.

Extracted from a larger patch in the BSP by LUU HOAI.

Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Acked-by: Guenter Roeck <linux@roeck-us.net>
Reviewed-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Link: https://lore.kernel.org/r/556a7f41bdadceecbe8b59b79ac7e9f592ca17a2.1642525158.git.geert+renesas@glider.be

diff --git a/arch/arm64/boot/dts/renesas/r8a779f0.dtsi b/arch/arm64/boot/dts/renesas/r8a779f0.dtsi
index 5426532..0ac8c34 100644 (file)
--- a/arch/arm64/boot/dts/renesas/r8a779f0.dtsi
+++ b/arch/arm64/boot/dts/renesas/r8a779f0.dtsi
@@ -59,6 +59,16 @@
                #size-cells = <2>;
                ranges;
 
+               rwdt: watchdog@e6020000 {
+                       compatible = "renesas,r8a779f0-wdt",
+                                    "renesas,rcar-gen4-wdt";
+                       reg = <0 0xe6020000 0 0x0c>;
+                       clocks = <&cpg CPG_MOD 907>;
+                       power-domains = <&sysc R8A779F0_PD_ALWAYS_ON>;
+                       resets = <&cpg 907>;
+                       status = "disabled";
+               };
+
                cpg: clock-controller@e6150000 {
                        compatible = "renesas,r8a779f0-cpg-mssr";
                        reg = <0 0xe6150000 0 0x4000>;