Commit c5486819 authored by Vitor Massaru Iha's avatar Vitor Massaru Iha Committed by Shawn Guo
Browse files

arm64: dts: imx8mq-phanbell: Add gpio-fan/thermal support 

It was based on Google Source Code for Coral Edge TPU Mendel release:
https://coral.googlesource.com/linux-imx/



It was tested on Coral Dev Board using this command:
  sudo stress --cpu 4 --timeout 3600

Signed-off-by: default avatarVitor Massaru Iha <vitor@massaru.org>
Reviewed-by: default avatarFabio Estevam <festevam@gmail.com>
Signed-off-by: default avatarShawn Guo <shawnguo@kernel.org>
parent f93f1e72

arch/arm64/boot/dts/freescale/imx8mq-phanbell.dts

+63 −0
Original line number Diff line number Diff line
@@ -35,6 +35,16 @@ 
		gpio = <&gpio2 19 GPIO_ACTIVE_HIGH>;

		enable-active-high;

	};



	fan: gpio-fan {

		compatible = "gpio-fan";

		gpio-fan,speed-map = <0 0 8600 1>;

		gpios = <&gpio3 5 GPIO_ACTIVE_HIGH>;

		#cooling-cells = <2>;

		pinctrl-names = "default";

		pinctrl-0 = <&pinctrl_gpio_fan>;

		status = "okay";

	};

};



&A53_0 {
@@ -53,6 +63,53 @@ 
	cpu-supply = <&buck2>;

};



&cpu_thermal {

	trips {

		cpu_alert0: trip0 {

			temperature = <75000>;

			hysteresis = <2000>;

			type = "passive";

		};



		cpu_alert1: trip1 {

			temperature = <80000>;

			hysteresis = <2000>;

			type = "passive";

		};



		cpu_crit0: trip3 {

			temperature = <90000>;

			hysteresis = <2000>;

			type = "critical";

		};



		fan_toggle0: trip4 {

			temperature = <65000>;

			hysteresis = <10000>;

			type = "active";

		};

	};



	cooling-maps {

		map0 {

			trip = <&cpu_alert0>;

			cooling-device =

			<&A53_0 0 1>; /* Exclude highest OPP */

		};



		map1 {

			trip = <&cpu_alert1>;

			cooling-device =

			<&A53_0 0 2>; /* Exclude two highest OPPs */

		};



		map4 {

			trip = <&fan_toggle0>;

			cooling-device = <&fan 0 1>;

		};

	};

};



&i2c1 {

	clock-frequency = <400000>;

	pinctrl-names = "default";
@@ -295,6 +352,12 @@ 
		>;

	};



	pinctrl_gpio_fan: gpiofangrp {

		fsl,pins = <

			MX8MQ_IOMUXC_NAND_CLE_GPIO3_IO5			0x16

		>;

	};



	pinctrl_i2c1: i2c1grp {

		fsl,pins = <

			MX8MQ_IOMUXC_I2C1_SCL_I2C1_SCL			0x4000007f

arch/arm64/boot/dts/freescale/imx8mq.dtsi

+1 −1
Original line number Diff line number Diff line
@@ -198,7 +198,7 @@ 
	};



	thermal-zones {

		cpu-thermal {

		cpu_thermal: cpu-thermal {

			polling-delay-passive = <250>;

			polling-delay = <2000>;

			thermal-sensors = <&tmu 0>;

CRA Git | Maintained and supported by SUSTech CRA and CCSE