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> --- .../boot/dts/freescale/imx8mq-phanbell.dts | 78 +++++++++++++++++++ arch/arm64/boot/dts/freescale/imx8mq.dtsi | 2 +- 2 files changed, 79 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..fb9f208d1e41 100644 --- a/arch/arm64/boot/dts/freescale/imx8mq-phanbell.dts +++ b/arch/arm64/boot/dts/freescale/imx8mq-phanbell.dts @@ -35,6 +35,14 @@ 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>; + status = "okay"; + }; }; &A53_0 { @@ -374,3 +382,73 @@ >; }; }; + +&tmu { + throttle-cfgs { + throttle_devfreq: devfreq { + throttle,max_state = <2>; + #cooling-cells = <2>; + }; + }; +}; + +&cpu_thermal { + trips { + cpu_alert0: trip0 { + temperature = <75000>; + hysteresis = <2000>; + type = "passive"; + }; + + cpu_alert1: trip1 { + temperature = <80000>; + hysteresis = <2000>; + type = "passive"; + }; + + cpu_alert2: trip2 { + temperature = <85000>; + 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 = + <&throttle_devfreq 0 1>, /* 1/2 GPU Clock */ + <&A53_0 0 1>; /* Exclude highest OPP */ + }; + + map1 { + trip = <&cpu_alert1>; + cooling-device = + <&A53_0 0 2>; /* Exclude two highest OPPs */ + }; + + map2 { + trip = <&cpu_alert2>; + cooling-device = + <&throttle_devfreq 0 2>; /* Min GPU Clock, disable CPU2/3 */ + }; + + 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
