linux-kernel - [PATCH v2 4/6] arm64: dts: qcom: r0q: enable max77705 fuelgauge

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <20251014044135.177210-5-ghatto404@gmail.com>
Date: Tue, 14 Oct 2025 00:41:33 -0400
From: Eric Gonçalves <ghatto404@...il.com>
To: Krzysztof Kozlowski <krzk@...nel.org>,
	Bjorn Andersson <andersson@...nel.org>,
	Konrad Dybcio <konradybcio@...nel.org>,
	Rob Herring <robh@...nel.org>,
	Conor Dooley <conor+dt@...nel.org>
Cc: linux-arm-msm@...r.kernel.org,
	devicetree@...r.kernel.org,
	linux-kernel@...r.kernel.org
Subject: [PATCH v2 4/6] arm64: dts: qcom: r0q: enable max77705 fuelgauge

The Samsung Galaxy S22 uses max77705 for its charger and fuelgauge,
enable them.

Signed-off-by: Eric Gonçalves <ghatto404@...il.com>
---
 .../boot/dts/qcom/sm8450-samsung-r0q.dts      | 32 +++++++++++++++++++
 1 file changed, 32 insertions(+)

diff --git a/arch/arm64/boot/dts/qcom/sm8450-samsung-r0q.dts b/arch/arm64/boot/dts/qcom/sm8450-samsung-r0q.dts
index 96a8a0e69681..244fed27a4cc 100644
--- a/arch/arm64/boot/dts/qcom/sm8450-samsung-r0q.dts
+++ b/arch/arm64/boot/dts/qcom/sm8450-samsung-r0q.dts
@@ -15,6 +15,16 @@ / {
 	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>;
@@ -199,6 +209,24 @@ vreg_l11c_3p0: ldo11 {
 	};
 };
 
+&i2c5 {
+	status = "okay";
+
+	max77705_charger: charger@69 {
+		compatible = "maxim,max77705-charger";
+		reg = <0x69>;
+		monitored-battery = <&battery>;
+		interrupts-extended = <&tlmm 5 IRQ_TYPE_LEVEL_LOW>;
+	};
+
+	fuel-gauge@36 {
+		reg = <0x36>;
+		compatible = "maxim,max77705-battery";
+		power-supplies = <&max77705_charger>;
+		interrupts-extended = <&tlmm 5 IRQ_TYPE_LEVEL_LOW>;
+	};
+};
+
 &pm8350_gpios {
 	vol_up_n: vol-up-n-state {
 		pins = "gpio6";
@@ -218,6 +246,10 @@ &pon_resin {
 	status = "okay";
 };
 
+&qupv3_id_0 {
+	status = "okay";
+};
+
 &tlmm {
 	gpio-reserved-ranges = <36 4>; /* SPI (Unused) */
 
-- 
2.51.0