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>
---
v2->v3
- No change

v1->v2
- No change
---
 arch/arm64/boot/dts/renesas/r9a09g057.dtsi | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/arch/arm64/boot/dts/renesas/r9a09g057.dtsi b/arch/arm64/boot/dts/renesas/r9a09g057.dtsi
index acc9c512fbab..4d5baed02fda 100644
--- a/arch/arm64/boot/dts/renesas/r9a09g057.dtsi
+++ b/arch/arm64/boot/dts/renesas/r9a09g057.dtsi
@@ -367,6 +367,7 @@ wdt0: watchdog@11c00400 {
 			clock-names = "pclk", "oscclk";
 			resets = <&cpg 0x75>;
 			power-domains = <&cpg>;
+			renesas,syscon-cpg-error-rst = <&cpg 0xb40 0>;
 			status = "disabled";
 		};
 
@@ -377,6 +378,7 @@ wdt1: watchdog@14400000 {
 			clock-names = "pclk", "oscclk";
 			resets = <&cpg 0x76>;
 			power-domains = <&cpg>;
+			renesas,syscon-cpg-error-rst = <&cpg 0xb40 1>;
 			status = "disabled";
 		};
 
@@ -387,6 +389,7 @@ wdt2: watchdog@13000000 {
 			clock-names = "pclk", "oscclk";
 			resets = <&cpg 0x77>;
 			power-domains = <&cpg>;
+			renesas,syscon-cpg-error-rst = <&cpg 0xb40 2>;
 			status = "disabled";
 		};
 
@@ -397,6 +400,7 @@ 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