From: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com>

Add `renesas,syscon-cpg-error-rst` property to WDT node, to determine
whether the current boot resulted from a `Power-on Reset` or a
`Watchdog Reset`.

Signed-off-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com>
---
v3->v4
- New patch
---
 arch/arm64/boot/dts/renesas/r9a09g047.dtsi | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/arch/arm64/boot/dts/renesas/r9a09g047.dtsi b/arch/arm64/boot/dts/renesas/r9a09g047.dtsi
index c366bd2667ff..d5d7b390fac9 100644
--- a/arch/arm64/boot/dts/renesas/r9a09g047.dtsi
+++ b/arch/arm64/boot/dts/renesas/r9a09g047.dtsi
@@ -189,6 +189,7 @@ wdt1: watchdog@14400000 {
 			clock-names = "pclk", "oscclk";
 			resets = <&cpg 0x76>;
 			power-domains = <&cpg>;
+			renesas,syscon-cpg-error-rst = <&cpg 0xb40 1>;
 			status = "disabled";
 		};
 
@@ -199,6 +200,7 @@ wdt2: watchdog@13000000 {
 			clock-names = "pclk", "oscclk";
 			resets = <&cpg 0x77>;
 			power-domains = <&cpg>;
+			renesas,syscon-cpg-error-rst = <&cpg 0xb40 2>;
 			status = "disabled";
 		};
 
@@ -209,6 +211,7 @@ wdt3: watchdog@13000400 {
 			clock-names = "pclk", "oscclk";
 			resets = <&cpg 0x78>;
 			power-domains = <&cpg>;
+			renesas,syscon-cpg-error-rst = <&cpg 0xb40 3>;
 			status = "disabled";
 		};
 
-- 
2.43.0