Re: [RFC PATCH v2 4/4] ARM: sun8i: h3: add support for the thermal sensor in H3

Maxime Ripard
2017-04-03T06:42:08Z

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On Sun, Apr 02, 2017 at 04:34:55PM +0200, Quentin Schulz wrote:
> Hi Icenowy,
>
> On 02/04/2017 15:33, Icenowy Zheng wrote:
> > 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-h8G6r0blFSE@public.gmane.org>
> > ---
> > 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@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?

No.

This is a separate, unrelated, change that has nothing to do with what
is described either in the commit title or the commit log.

The thermal zone itself shouldn't even be in this patch.

Maxime

--
Maxime Ripard, Free Electrons
Embedded Linux and Kernel engineering