arm64: dts: renesas: r8a77980: add RWDT support

Describe RWDT in the R8A77980 SoC device tree.

Enable RWDT on the Condor and V3H Starter Kit boards.

Based on the original (and large) patch by Vladimir Barinov.

Signed-off-by: Vladimir Barinov <vladimir.barinov@cogentembedded.com>
Signed-off-by: Sergei Shtylyov <sergei.shtylyov@cogentembedded.com>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>

diff --git a/arch/arm64/boot/dts/renesas/r8a77980-condor.dts b/arch/arm64/boot/dts/renesas/r8a77980-condor.dts
index 9f25c407dfd711741d14e2b19521c60097ad5006..494f4ef37a4eb4b1e8746b94e615e1c53398aa7b 100644 (file)
--- a/arch/arm64/boot/dts/renesas/r8a77980-condor.dts
+++ b/arch/arm64/boot/dts/renesas/r8a77980-condor.dts
@@ -156,6 +156,11 @@
        };
 };
 
+&rwdt {
+       timeout-sec = <60>;
+       status = "okay";
+};
+
 &scif0 {
        pinctrl-0 = <&scif0_pins>, <&scif_clk_pins>;
        pinctrl-names = "default";

diff --git a/arch/arm64/boot/dts/renesas/r8a77980-v3hsk.dts b/arch/arm64/boot/dts/renesas/r8a77980-v3hsk.dts
index 9dac42f8f80435c91e19fad0121e1e56df6855e1..9147d85645571a5581df8ffea4f41832cdd3f230 100644 (file)
--- a/arch/arm64/boot/dts/renesas/r8a77980-v3hsk.dts
+++ b/arch/arm64/boot/dts/renesas/r8a77980-v3hsk.dts
@@ -71,6 +71,11 @@
        };
 };
 
+&rwdt {
+       timeout-sec = <60>;
+       status = "okay";
+};
+
 &scif0 {
        pinctrl-0 = <&scif0_pins>, <&scif_clk_pins>;
        pinctrl-names = "default";

diff --git a/arch/arm64/boot/dts/renesas/r8a77980.dtsi b/arch/arm64/boot/dts/renesas/r8a77980.dtsi
index b8c9a56562f249bb084a9002f7332fc4f43dad5d..4a1097e32551d9b14592c1f2cea186e5874fa144 100644 (file)
--- a/arch/arm64/boot/dts/renesas/r8a77980.dtsi
+++ b/arch/arm64/boot/dts/renesas/r8a77980.dtsi
@@ -118,6 +118,16 @@
                #size-cells = <2>;
                ranges;
 
+               rwdt: watchdog@e6020000 {
+                       compatible = "renesas,r8a77980-wdt",
+                                    "renesas,rcar-gen3-wdt";
+                       reg = <0 0xe6020000 0 0x0c>;
+                       clocks = <&cpg CPG_MOD 402>;
+                       power-domains = <&sysc R8A77980_PD_ALWAYS_ON>;
+                       resets = <&cpg 402>;
+                       status = "disabled";
+               };
+
                gpio0: gpio@e6050000 {
                        compatible = "renesas,gpio-r8a77980",
                                     "renesas,rcar-gen3-gpio";