linux-kernel - [PATCH v3 4/5] arm64: dts: exynos: gs101: add pmu-intr-gen syscon node

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Message-Id: <20250429-contrib-pg-cpu-hotplug-suspend2ram-fixes-v1-v3-4-1bcc44fb1d55@linaro.org>
Date: Tue, 29 Apr 2025 07:19:40 +0100
From: Peter Griffin <peter.griffin@...aro.org>
To: Rob Herring <robh@...nel.org>, Krzysztof Kozlowski <krzk@...nel.org>, 
 Conor Dooley <conor+dt@...nel.org>, Alim Akhtar <alim.akhtar@...sung.com>
Cc: devicetree@...r.kernel.org, linux-arm-kernel@...ts.infradead.org, 
 linux-samsung-soc@...r.kernel.org, linux-kernel@...r.kernel.org, 
 tudor.ambarus@...aro.org, andre.draszik@...aro.org, willmcvicker@...gle.com, 
 kernel-team@...roid.com, Peter Griffin <peter.griffin@...aro.org>
Subject: [PATCH v3 4/5] arm64: dts: exynos: gs101: add pmu-intr-gen syscon
 node

Add syscon node for the PMU Interrupt Generation registers.

Additionally update the exynos-pmu node to provide a phandle
to pmu-intr-gen syscon.

These registers are required for CPU hotplug to be functional.

Signed-off-by: Peter Griffin <peter.griffin@...aro.org>
---
Changes since v1:
* Model pmu-intr-gen as it's own syscon (Krzysztof)
---
 arch/arm64/boot/dts/exynos/google/gs101.dtsi | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/arch/arm64/boot/dts/exynos/google/gs101.dtsi b/arch/arm64/boot/dts/exynos/google/gs101.dtsi
index 91cda7758020563b2c5b5768d8921e87b1f4231c..48c691fd0a3ae430b5d66b402610d23b72b144d7 100644
--- a/arch/arm64/boot/dts/exynos/google/gs101.dtsi
+++ b/arch/arm64/boot/dts/exynos/google/gs101.dtsi
@@ -1405,6 +1405,7 @@ sysreg_apm: syscon@...204e0 {
 		pmu_system_controller: system-controller@...60000 {
 			compatible = "google,gs101-pmu", "syscon";
 			reg = <0x17460000 0x10000>;
+			google,pmu-intr-gen-syscon = <&pmu_intr_gen>;
 
 			poweroff: syscon-poweroff {
 				compatible = "syscon-poweroff";
@@ -1434,6 +1435,11 @@ reboot-mode {
 			};
 		};
 
+		pmu_intr_gen: syscon@...70000 {
+			compatible = "google,gs101-pmu-intr-gen", "syscon";
+			reg = <0x17470000 0x10000>;
+		};
+
 		pinctrl_gpio_alive: pinctrl@...d0000 {
 			compatible = "google,gs101-pinctrl";
 			reg = <0x174d0000 0x00001000>;

-- 
2.49.0.901.g37484f566f-goog