linux-kernel - [PATCH 3/5] arm64: dts: qcom: r0q: enable max77705 PMIC

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Message-ID: <20250920014637.38175-4-ghatto404@gmail.com>
Date: Sat, 20 Sep 2025 01:46:35 +0000
From: Eric Gonçalves <ghatto404@...il.com>
To: Bjorn Andersson <andersson@...nel.org>,
	Konrad Dybcio <konradybcio@...nel.org>,
	Rob Herring <robh@...nel.org>,
	Krzysztof Kozlowski <krzk+dt@...nel.org>,
	Conor Dooley <conor+dt@...nel.org>
Cc: devicetree@...r.kernel.org,
	linux-arm-msm@...r.kernel.org,
	linux-kernel@...r.kernel.org
Subject: [PATCH 3/5] arm64: dts: qcom: r0q: enable max77705 PMIC

The Samsung Galaxy S22 uses max77705 as its charger, fuelgauge and haptic
PMIC, enable the fuelgauge and charger for now.

Signed-off-by: Eric Gonçalves <ghatto404@...il.com>
---
 .../boot/dts/qcom/sm8450-samsung-r0q.dts      | 34 +++++++++++++++++++
 1 file changed, 34 insertions(+)

diff --git a/arch/arm64/boot/dts/qcom/sm8450-samsung-r0q.dts b/arch/arm64/boot/dts/qcom/sm8450-samsung-r0q.dts
index 7bf56564dfc6..c1b0b21c0ec5 100644
--- a/arch/arm64/boot/dts/qcom/sm8450-samsung-r0q.dts
+++ b/arch/arm64/boot/dts/qcom/sm8450-samsung-r0q.dts
@@ -14,6 +14,16 @@ / {
 	compatible = "samsung,r0q", "qcom,sm8450";
 	chassis-type = "handset";
 
+	battery: battery {
+		compatible = "simple-battery";
+
+		constant-charge-current-max-microamp = <2150000>;
+		charge-full-design-microamp-hours = <3700000>;
+		over-voltage-threshold-microvolt = <4500000>;
+		voltage-min-design-microvolt = <3400000>;
+		voltage-max-design-microvolt = <4350000>;
+	};
+
 	chosen {
 		#address-cells = <2>;
 		#size-cells = <2>;
@@ -186,6 +196,26 @@ vreg_l11c_3p0: ldo11 {
 	};
 };
 
+&i2c5 {
+	status = "okay";
+
+	max77705_charger: charger@69 {
+	    compatible = "maxim,max77705-charger";
+	    reg = <0x69>;
+	    monitored-battery = <&battery>;
+	    interrupt-parent = <&tlmm>;
+	    interrupts = <5 IRQ_TYPE_LEVEL_LOW>;
+	};
+
+	fuel-gauge@36 {
+		reg = <0x36>;
+		compatible = "maxim,max77705-battery";
+		power-supplies = <&max77705_charger>;
+		interrupt-parent = <&tlmm>;
+		interrupts = <5 IRQ_TYPE_LEVEL_LOW>;
+	};
+};
+
 &pm8350_gpios {
 	vol_up_n: vol-up-n-state {
 		pins = "gpio6";
@@ -345,3 +375,7 @@ &usb_1_hsphy {
 
 	status = "okay";
 };
+
+&qupv3_id_0 {
+	status = "okay";
+};
-- 
2.51.0