From: Francesco Dolcini <francesco.dolcini@toradex.com>
Date: Wed, 30 Apr 2025 09:41:47 +0000 (+0200)
Subject: arm64: dts: freescale: imx8mp-toradex-smarc: add fan PWM configuration
X-Git-Tag: v6.16-rc1~97^2~32^2~4
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=8c7432dc2ab0e0106124b0416a6a21613b294655;p=thirdparty%2Fkernel%2Fstable.git

arm64: dts: freescale: imx8mp-toradex-smarc: add fan PWM configuration

Configure correctly the FAN pwm output (inverted).

Reviewed-by: Peng Fan <peng.fan@nxp.com>
Signed-off-by: Francesco Dolcini <francesco.dolcini@toradex.com>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>
---

diff --git a/arch/arm64/boot/dts/freescale/imx8mp-toradex-smarc-dev.dts b/arch/arm64/boot/dts/freescale/imx8mp-toradex-smarc-dev.dts
index 581f221323b79..55b8c5c14fb4f 100644
--- a/arch/arm64/boot/dts/freescale/imx8mp-toradex-smarc-dev.dts
+++ b/arch/arm64/boot/dts/freescale/imx8mp-toradex-smarc-dev.dts
@@ -3,6 +3,8 @@
 
 /dts-v1/;
 
+#include <dt-bindings/pwm/pwm.h>
+
 #include "imx8mp-toradex-smarc.dtsi"
 
 / {
@@ -205,9 +207,14 @@
 	status = "okay";
 
 	/* Fan controller */
-	fan@18 {
+	fan_controller: fan@18 {
 		compatible = "ti,amc6821";
 		reg = <0x18>;
+		#pwm-cells = <2>;
+
+		fan {
+			pwms = <&fan_controller 40000 PWM_POLARITY_INVERTED>;
+		};
 	};
 
 	/* Current measurement into module VDD */