linux-kernel - [PATCH] arm64: dts: qcom: lemans-evk: Enable AMC6821 fan controller

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Message-Id: <20251017050256.987660-1-gaurav.kohli@oss.qualcomm.com>
Date: Fri, 17 Oct 2025 10:32:56 +0530
From: Gaurav Kohli <gaurav.kohli@....qualcomm.com>
To: andersson@...nel.org, konradybcio@...nel.org, robh@...nel.org,
        krzk+dt@...nel.org
Cc: linux-arm-msm@...r.kernel.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org, gaurav.kohli@....qualcomm.com
Subject: [PATCH] arm64: dts: qcom: lemans-evk: Enable AMC6821 fan controller

Enable AMC6821 fan controller for lemans-evk platform and
configure pwm polarity as inverted.

Signed-off-by: Gaurav Kohli <gaurav.kohli@....qualcomm.com>
---
 arch/arm64/boot/dts/qcom/lemans-evk.dts | 20 ++++++++++++++++++++
 1 file changed, 20 insertions(+)

diff --git a/arch/arm64/boot/dts/qcom/lemans-evk.dts b/arch/arm64/boot/dts/qcom/lemans-evk.dts
index c7dc9b8f4457..9bc3e6d4c9af 100644
--- a/arch/arm64/boot/dts/qcom/lemans-evk.dts
+++ b/arch/arm64/boot/dts/qcom/lemans-evk.dts
@@ -6,6 +6,7 @@
 /dts-v1/;
 
 #include <dt-bindings/gpio/gpio.h>
+#include <dt-bindings/pwm/pwm.h>
 #include <dt-bindings/sound/qcom,q6afe.h>
 #include <dt-bindings/regulator/qcom,rpmh-regulator.h>
 
@@ -501,6 +502,20 @@ mac_addr0: mac-addr@0 {
 	};
 };
 
+&i2c19 {
+	status = "okay";
+
+	fan_controller: fan@18 {
+		compatible = "ti,amc6821";
+		reg = <0x18>;
+		#pwm-cells = <2>;
+
+		fan {
+			pwms = <&fan_controller 40000 PWM_POLARITY_INVERTED>;
+		};
+	};
+};
+
 &iris {
 	firmware-name = "qcom/vpu/vpu30_p4_s6_16mb.mbn";
 
@@ -587,6 +602,11 @@ &pcie1_phy {
 	status = "okay";
 };
 
+&qup_i2c19_default {
+	drive-strength = <2>;
+	bias-pull-up;
+};
+
 &qupv3_id_0 {
 	status = "okay";
 };
-- 
2.34.1