| Message ID | 20170403154829.29780-1-zajec5@gmail.com |
|---|---|
| State | New |
| Headers | show |
On Mon, Apr 03, 2017 at 05:48:28PM +0200, Rafał Miłecki wrote: > From: Rafał Miłecki <rafal@milecki.pl> > > This commit documents binding for thermal used in Northstar family SoCs. > > There isn't any known Northstar device with active cooling system so DT > example has empty cooling-maps node. There is also no support for CPU > frequency throttling so I put only a critical trip in the example. > > Signed-off-by: Rafał Miłecki <rafal@milecki.pl> > --- > V3: Add thermal-zones to the example > V5: Extend example by including trips and cooling-maps. Update commit message > --- > .../devicetree/bindings/thermal/brcm,ns-thermal | 37 ++++++++++++++++++++++ > 1 file changed, 37 insertions(+) > create mode 100644 Documentation/devicetree/bindings/thermal/brcm,ns-thermal Acked-by: Rob Herring <robh@kernel.org>
diff --git a/Documentation/devicetree/bindings/thermal/brcm,ns-thermal b/Documentation/devicetree/bindings/thermal/brcm,ns-thermal new file mode 100644 index 000000000000..68e047170039 --- /dev/null +++ b/Documentation/devicetree/bindings/thermal/brcm,ns-thermal @@ -0,0 +1,37 @@ +* 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>; + + trips { + cpu-crit { + temperature = <125000>; + hysteresis = <0>; + type = "critical"; + }; + }; + + cooling-maps { + }; + }; +};