[RFC PATCH v2 4/4] ARM: sun8i: h3: add support for the thermal sensor in H3
From: Quentin Schulz <hidden>
Date: 2017-04-02 14:35:00
Also in:
linux-devicetree, linux-iio, linux-pm, lkml
Hi Icenowy, On 02/04/2017 15:33, Icenowy Zheng wrote:
quoted hunk ↗ jump to hunk
As we have gained the support for the thermal sensor in H3, we can now add its device nodes to the device tree. Add them to the H3 device tree. The H5 thermal sensor has some differences, and will be added furtherly. Signed-off-by: Icenowy Zheng <icenowy@aosc.io> --- arch/arm/boot/dts/sun8i-h3.dtsi | 26 ++++++++++++++++++++++++++ 1 file changed, 26 insertions(+)diff --git a/arch/arm/boot/dts/sun8i-h3.dtsi b/arch/arm/boot/dts/sun8i-h3.dtsi index b36f9f423c39..552217bb9266 100644 --- a/arch/arm/boot/dts/sun8i-h3.dtsi +++ b/arch/arm/boot/dts/sun8i-h3.dtsi@@ -72,6 +72,32 @@ }; }; + iio-hwmon { + compatible = "iio-hwmon"; + io-channels = <&ths>; + }; + + soc { + ths: ths at 01c25000 { + compatible = "allwinner,sun8i-h3-ths"; + reg = <0x01c25000 0x100>; + clocks = <&ccu CLK_BUS_THS>, <&ccu CLK_THS>; + clock-names = "bus", "ths"; + resets = <&ccu RST_BUS_THS>; + #thermal-sensor-cells = <0>; + #io-channel-cells = <0>; + }; + }; + + thermal-zones { + cpu_thermal { + /* milliseconds */ + polling-delay-passive = <250>; + polling-delay = <1000>; + thermal-sensors = <&ths>; + };
Would it make sense to add the CPU temp trip points in this patch? Or do we wait to have CPU OPPs and thermal throttling to add them? I guess you can find them either in the datasheet or in vendor tree. Thanks, Quentin -- Quentin Schulz, Free Electrons Embedded Linux and Kernel engineering http://free-electrons.com