On Wed, Feb 18, 2015 at 11:07:33AM +0100, Lukasz Majewski wrote: > With those bindings it is possible to use pwm-fan device available in > Odroid U3 as a cooling device. > > Signed-off-by: Lukasz Majewski <[email protected]> > --- > Changes for v2: > - Rename cooling-pwm-values property to cooling-levels > Changes for v3: > - Change patch's topic to "ARM dts" > - Reduce maximal cooling-level to 230 from 255 > Changes for v4: > - None > --- > arch/arm/boot/dts/exynos4412-odroidu3.dts | 33 > ++++++++++++++++++++++++++++++- > 1 file changed, 32 insertions(+), 1 deletion(-) > > diff --git a/arch/arm/boot/dts/exynos4412-odroidu3.dts > b/arch/arm/boot/dts/exynos4412-odroidu3.dts > index 60bd1e4..3e5df3e 100644 > --- a/arch/arm/boot/dts/exynos4412-odroidu3.dts > +++ b/arch/arm/boot/dts/exynos4412-odroidu3.dts > @@ -32,11 +32,42 @@ > }; > }; > > - pwm-fan { > + fan0: pwm-fan { > compatible = "pwm-fan"; > pwms = <&pwm 0 10000 0>; > + cooling-min-state = <0>; > + cooling-max-state = <3>; > + #cooling-cells = <2>; > + cooling-levels = <0 102 170 230>; > status = "okay"; > }; > + > + thermal-zones { > + cpu_thermal: cpu-thermal {
This thermal zone misses the mandatory properties as per
Documentation/devicetree/bindings/thermal/thermal.txt
> + cooling-maps {
> + map0 {
> + trip = <&cpu_alert1>;
> + cooling-device = <&cpu0 7 7>;
> + };
> + map1 {
> + trip = <&cpu_alert2>;
> + cooling-device = <&cpu0 13 13>;
> + };
> + map2 {
> + trip = <&cpu_alert0>;
> + cooling-device = <&fan0 0 1>;
> + };
> + map3 {
> + trip = <&cpu_alert1>;
> + cooling-device = <&fan0 1 2>;
> + };
> + map4 {
> + trip = <&cpu_alert2>;
> + cooling-device = <&fan0 2 3>;
> + };
> + };
> + };
> + };
> };
>
> &pwm {
> --
> 2.0.0.rc2
>
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