linux-kernel - [PATCH 3/4] arm64: dts: apm: Add "reg" to "syscon-reboot" and "syscon-poweroff"

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Message-Id: <20251216-dt-apm-v1-3-0bf2bf8b982c@kernel.org>
Date: Tue, 16 Dec 2025 14:27:50 -0600
From: "Rob Herring (Arm)" <robh@...nel.org>
To: soc@...nel.org, Khuong Dinh <khuong@...amperecomputing.com>, 
 Krzysztof Kozlowski <krzk+dt@...nel.org>, 
 Conor Dooley <conor+dt@...nel.org>
Cc: devicetree@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: [PATCH 3/4] arm64: dts: apm: Add "reg" to "syscon-reboot" and
 "syscon-poweroff"

As the nodes already have a unit-address, add the corresponding "reg"
entry which is preferred over "offset".

Signed-off-by: Rob Herring (Arm) <robh@...nel.org>
---
 arch/arm64/boot/dts/apm/apm-merlin.dts     | 1 +
 arch/arm64/boot/dts/apm/apm-mustang.dts    | 1 +
 arch/arm64/boot/dts/apm/apm-shadowcat.dtsi | 1 +
 arch/arm64/boot/dts/apm/apm-storm.dtsi     | 1 +
 4 files changed, 4 insertions(+)

diff --git a/arch/arm64/boot/dts/apm/apm-merlin.dts b/arch/arm64/boot/dts/apm/apm-merlin.dts
index b1160780a2a6..4ec05886dd41 100644
--- a/arch/arm64/boot/dts/apm/apm-merlin.dts
+++ b/arch/arm64/boot/dts/apm/apm-merlin.dts
@@ -38,6 +38,7 @@ poweroff_mbox: poweroff_mbox@...48000 {
 
 	poweroff: poweroff@...48010 {
 		compatible = "syscon-poweroff";
+		reg = <0x0 0x10548010 0x0 0x4>;
 		regmap = <&poweroff_mbox>;
 		offset = <0x10>;
 		mask = <0x1>;
diff --git a/arch/arm64/boot/dts/apm/apm-mustang.dts b/arch/arm64/boot/dts/apm/apm-mustang.dts
index 2ef658796746..8f7eeba56dc4 100644
--- a/arch/arm64/boot/dts/apm/apm-mustang.dts
+++ b/arch/arm64/boot/dts/apm/apm-mustang.dts
@@ -38,6 +38,7 @@ poweroff_mbox: poweroff_mbox@...48000 {
 
 	poweroff: poweroff@...48010 {
 		compatible = "syscon-poweroff";
+		reg = <0x0 0x10548010 0x0 0x4>;
 		regmap = <&poweroff_mbox>;
 		offset = <0x10>;
 		mask = <0x1>;
diff --git a/arch/arm64/boot/dts/apm/apm-shadowcat.dtsi b/arch/arm64/boot/dts/apm/apm-shadowcat.dtsi
index 95281268fb7f..e930f2f26f4b 100644
--- a/arch/arm64/boot/dts/apm/apm-shadowcat.dtsi
+++ b/arch/arm64/boot/dts/apm/apm-shadowcat.dtsi
@@ -417,6 +417,7 @@ scu: system-clk-controller@...00000 {
 
 		reboot: reboot@...00014 {
 			compatible = "syscon-reboot";
+			reg = <0x0 0x17000014 0x0 0x4>;
 			regmap = <&scu>;
 			offset = <0x14>;
 			mask = <0x1>;
diff --git a/arch/arm64/boot/dts/apm/apm-storm.dtsi b/arch/arm64/boot/dts/apm/apm-storm.dtsi
index 85ad18b63038..3bb59704fcb2 100644
--- a/arch/arm64/boot/dts/apm/apm-storm.dtsi
+++ b/arch/arm64/boot/dts/apm/apm-storm.dtsi
@@ -462,6 +462,7 @@ scu: system-clk-controller@...00000 {
 
 		reboot: reboot@...00014 {
 			compatible = "syscon-reboot";
+			reg = <0x0 0x17000014 0x0 0x4>;
 			regmap = <&scu>;
 			offset = <0x14>;
 			mask = <0x1>;

-- 
2.51.0