[PATCH v2 6/7] arm64: dts: imx943-evk: Add fan node and enable active cooling on A55

[Peng Fan (OSS)]

From: Florin Leotescu <florin.leotescu@xxxxxxx>

Add pwm fan node and use it for A55 cooling.

Signed-off-by: Florin Leotescu <florin.leotescu@xxxxxxx>
Signed-off-by: Peng Fan <peng.fan@xxxxxxx>
---
 arch/arm64/boot/dts/freescale/imx943-evk.dts | 56 ++++++++++++++++++++++++++++
 1 file changed, 56 insertions(+)

diff --git a/arch/arm64/boot/dts/freescale/imx943-evk.dts b/arch/arm64/boot/dts/freescale/imx943-evk.dts
index ec728efbe15cf0b97deade68445b23528325b082..7125c7fc6e32999fd279b9d01af0b210d1ab843d 100644
--- a/arch/arm64/boot/dts/freescale/imx943-evk.dts
+++ b/arch/arm64/boot/dts/freescale/imx943-evk.dts
@@ -7,6 +7,7 @@
 
 #include "imx943.dtsi"
 #include <dt-bindings/usb/pd.h>
+#include <dt-bindings/pwm/pwm.h>
 
 #define BRD_SM_CTRL_BT_WAKE		0x8000  /*!< PCAL6416A-3 */
 #define BRD_SM_CTRL_SD3_WAKE		0x8001  /*!< PCAL6416A-4 */
@@ -314,6 +315,20 @@ i2c@4 {
 			#address-cells = <1>;
 			#size-cells = <0>;
 
+			fan_controller: pwm@2f {
+				compatible = "microchip,emc2301", "microchip,emc2305";
+				reg = <0x2f>;
+				#pwm-cells = <3>;
+				#address-cells = <1>;
+				#size-cells = <0>;
+
+				fan0: fan@0 {
+					reg = <0x0>;
+					pwms = <&fan_controller 26000 1 PWM_POLARITY_INVERTED>;
+					#cooling-cells = <2>;
+				};
+			};
+
 			wm8962: codec@1a {
 				compatible = "wlf,wm8962";
 				reg = <0x1a>;
@@ -892,6 +907,47 @@ BRD_SM_CTRL_PCIE2_WAKE		1
 			BRD_SM_CTRL_BUTTON		1>;
 };
 
+&thermal_zones {
+	a55-thermal {
+		trips {
+			atrip2: trip2 {
+				temperature = <55000>;
+				hysteresis = <2000>;
+				type = "active";
+			};
+
+			atrip3: trip3 {
+				temperature = <65000>;
+				hysteresis = <2000>;
+				type = "active";
+			};
+
+			atrip4: trip4 {
+				temperature = <75000>;
+				hysteresis = <2000>;
+				type = "active";
+			};
+		};
+
+		cooling-maps {
+			map1 {
+				trip = <&atrip2>;
+				cooling-device = <&fan0 4 6>;
+			};
+
+			map2 {
+				trip = <&atrip3>;
+				cooling-device = <&fan0 6 8>;
+			};
+
+			map3 {
+				trip = <&atrip4>;
+				cooling-device = <&fan0 8 10>;
+			};
+		};
+	};
+};
+
 &usb2 {
 	dr_mode = "otg";
 	disable-over-current;

-- 
2.37.1