linux-kernel - [PATCH 2/3] arm64: dts: exynos: gs101-pixel-common: add main PMIC node

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Message-Id: <20250627-gs101-reboot3-v1-2-c3ae49657b1f@linaro.org>
Date: Fri, 27 Jun 2025 14:29:31 +0100
From: André Draszik <andre.draszik@...aro.org>
To: Catalin Marinas <catalin.marinas@....com>, 
 Will Deacon <will@...nel.org>, Peter Griffin <peter.griffin@...aro.org>, 
 Tudor Ambarus <tudor.ambarus@...aro.org>, Rob Herring <robh@...nel.org>, 
 Krzysztof Kozlowski <krzk+dt@...nel.org>, 
 Conor Dooley <conor+dt@...nel.org>, Alim Akhtar <alim.akhtar@...sung.com>
Cc: Will McVicker <willmcvicker@...gle.com>, kernel-team@...roid.com, 
 linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org, 
 linux-samsung-soc@...r.kernel.org, devicetree@...r.kernel.org, 
 André Draszik <andre.draszik@...aro.org>
Subject: [PATCH 2/3] arm64: dts: exynos: gs101-pixel-common: add main PMIC
 node

On Pixel 6 (and Pro), a Samsung S2MPG10 is used as main PMIC, which
contains the following functional blocks:
    * common / speedy interface
    * regulators
    * 3 clock outputs
    * RTC
    * power meters
    * GPIO interfaces

This change enables the PMIC itself and the RTC. We're still working on
the remaining parts or waiting for bindings to be merged, hence only a
small subset of the functional is being enabled.

The regulators fall into the same category (still being finalised), but
since the binding requires a 'regulators' node, an empty node is being
added to avoid validation errors at this stage.

Signed-off-by: André Draszik <andre.draszik@...aro.org>
---
 .../boot/dts/exynos/google/gs101-pixel-common.dtsi    | 19 +++++++++++++++++++
 1 file changed, 19 insertions(+)

diff --git a/arch/arm64/boot/dts/exynos/google/gs101-pixel-common.dtsi b/arch/arm64/boot/dts/exynos/google/gs101-pixel-common.dtsi
index cd8e1b8a10b111190b984e104f749d04514d0449..c1b51f4cfb8c174852b44690f84ed1aa0b4057c2 100644
--- a/arch/arm64/boot/dts/exynos/google/gs101-pixel-common.dtsi
+++ b/arch/arm64/boot/dts/exynos/google/gs101-pixel-common.dtsi
@@ -100,6 +100,19 @@ cont_splash_mem: splash@...00000 {
 	};
 };
 
+&acpm_ipc {
+	pmic {
+		compatible = "samsung,s2mpg10-pmic";
+		interrupts-extended = <&gpa0 6 IRQ_TYPE_LEVEL_LOW>;
+		pinctrl-names = "default";
+		pinctrl-0 = <&pmic_int>;
+		wakeup-source;
+
+		regulators {
+		};
+	};
+};
+
 &ext_24_5m {
 	clock-frequency = <24576000>;
 };
@@ -290,6 +303,12 @@ if_pmic_int: if-pmic-int-pins {
 };
 
 &pinctrl_gpio_alive {
+	pmic_int: pmic-int-pins {
+		samsung,pins = "gpa0-6";
+		samsung,pin-function = <GS101_PIN_FUNC_EINT>;
+		samsung,pin-pud = <GS101_PIN_PULL_NONE>;
+	};
+
 	key_power: key-power-pins {
 		samsung,pins = "gpa10-1";
 		samsung,pin-function = <GS101_PIN_FUNC_EINT>;

-- 
2.50.0.727.gbf7dc18ff4-goog