From bcee502ceb6c0dcbc7ccd460ed7040c3d6998c3e Mon Sep 17 00:00:00 2001
From: Sergei Shtylyov <sergei.shtylyov@cogentembedded.com>
Date: Fri, 20 Jul 2018 22:21:45 +0300
Subject: [PATCH] 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>
---
 arch/arm64/boot/dts/renesas/r8a77980-condor.dts |  5 +++++
 arch/arm64/boot/dts/renesas/r8a77980-v3hsk.dts  |  5 +++++
 arch/arm64/boot/dts/renesas/r8a77980.dtsi       | 10 ++++++++++
 3 files changed, 20 insertions(+)

diff --git a/arch/arm64/boot/dts/renesas/r8a77980-condor.dts b/arch/arm64/boot/dts/renesas/r8a77980-condor.dts
index 9f25c407dfd7..494f4ef37a4e 100644
--- 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 9dac42f8f804..9147d8564557 100644
--- 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 b8c9a56562f2..4a1097e32551 100644
--- 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";
-- 
2.30.2