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: Vitor Massaru Iha <vitor@xxxxxxxxxxx> --- v2: * Fix underscore in property name; * Add pinctrl entry for gpio-fan; * Removes undocumented property. BR, Vitor --- .../boot/dts/freescale/imx8mq-phanbell.dts | 64 +++++++++++++++++++ arch/arm64/boot/dts/freescale/imx8mq.dtsi | 2 +- 2 files changed, 65 insertions(+), 1 deletion(-) diff --git a/arch/arm64/boot/dts/freescale/imx8mq-phanbell.dts b/arch/arm64/boot/dts/freescale/imx8mq-phanbell.dts index 3f2a489a4ad8..3302e5c127ca 100644 --- a/arch/arm64/boot/dts/freescale/imx8mq-phanbell.dts +++ b/arch/arm64/boot/dts/freescale/imx8mq-phanbell.dts @@ -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 { @@ -373,4 +383,58 @@ MX8MQ_IOMUXC_GPIO1_IO02_WDOG1_WDOG_B 0xc6 >; }; + + pinctrl_gpio_fan: gpiofanp { + fsl,pins = < + MX8MQ_IOMUXC_NAND_CLE_GPIO3_IO5 0x01 + >; + }; }; + +&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>; + }; + }; +}; + diff --git a/arch/arm64/boot/dts/freescale/imx8mq.dtsi b/arch/arm64/boot/dts/freescale/imx8mq.dtsi index 6a1e83922c71..a3bb17a6b9df 100644 --- a/arch/arm64/boot/dts/freescale/imx8mq.dtsi +++ b/arch/arm64/boot/dts/freescale/imx8mq.dtsi @@ -198,7 +198,7 @@ }; thermal-zones { - cpu-thermal { + cpu_thermal: cpu-thermal { polling-delay-passive = <250>; polling-delay = <2000>; thermal-sensors = <&tmu 0>; -- 2.21.1
