Rafal, On Fri, Mar 31, 2017 at 10:11:23PM +0200, Rafał Miłecki wrote: > From: Rafał Miłecki <rafal@xxxxxxxxxx> > > This commit documents binding for thermal used in Northstar family SoCs. > > Signed-off-by: Rafał Miłecki <rafal@xxxxxxxxxx> > --- > V3: Add thermal-zones to the example > Rob: Because of this update, I didn't include Acked-by I got for V2 > --- > .../devicetree/bindings/thermal/brcm,ns-thermal | 26 ++++++++++++++++++++++ > 1 file changed, 26 insertions(+) > create mode 100644 Documentation/devicetree/bindings/thermal/brcm,ns-thermal > > diff --git a/Documentation/devicetree/bindings/thermal/brcm,ns-thermal b/Documentation/devicetree/bindings/thermal/brcm,ns-thermal > new file mode 100644 > index 000000000000..c561c7349f17 > --- /dev/null > +++ b/Documentation/devicetree/bindings/thermal/brcm,ns-thermal > @@ -0,0 +1,26 @@ > +* Broadcom Northstar Thermal > + > +This binding describes thermal sensor that is part of Northstar's DMU (Device > +Management Unit). > + > +Required properties: > +- compatible : Must be "brcm,ns-thermal" > +- reg : iomem address range of PVTMON registers > +- #thermal-sensor-cells : Should be <0> > + > +Example: > + > +thermal: thermal@1800c2c0 { > + compatible = "brcm,ns-thermal"; > + reg = <0x1800c2c0 0x10>; > + #thermal-sensor-cells = <0>; > +}; > + > +thermal-zones { > + cpu_thermal: cpu-thermal { > + polling-delay-passive = <0>; > + polling-delay = <1000>; > + coefficients = <(-556) 418000>; > + thermal-sensors = <&thermal>; You need to define trips and cooling devices here. Otherwise, makes little sense to have this device in thermal subsystem. Here is an example of minimal set: https://git.kernel.org/pub/scm/linux/kernel/git/evalenti/linux-soc-thermal.git/commit/?h=linus&id=1e2ac9821de6a85d3e8358f238436708d1d46869 The above has no passive action. It is just gonna shutdown the system if temperature crosses a threshold. But, a typical cooling device would be CPU frequency throttling. Do you have that up and running in your routers? > + }; > +}; > -- > 2.11.0 > -- To unsubscribe from this list: send the line "unsubscribe devicetree" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html