| Message ID | 1484714522-26651-1-git-send-email-baoyou.xie@linaro.org (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
Hey Bao, On Wed, Jan 18, 2017 at 12:42:00PM +0800, Baoyou Xie wrote: > This patch adds dt-binding documentation for zx2967 family thermal sensor. > > Signed-off-by: Baoyou Xie <baoyou.xie@linaro.org> > Acked-by: Rob Herring <robh@kernel.org> > Reviewed-by: Shawn Guo <shawnguo@kernel.org> > --- > .../devicetree/bindings/thermal/zx2967-thermal.txt | 109 +++++++++++++++++++++ > 1 file changed, 109 insertions(+) > create mode 100644 Documentation/devicetree/bindings/thermal/zx2967-thermal.txt > > diff --git a/Documentation/devicetree/bindings/thermal/zx2967-thermal.txt b/Documentation/devicetree/bindings/thermal/zx2967-thermal.txt > new file mode 100644 > index 0000000..a96c8b3 > --- /dev/null > +++ b/Documentation/devicetree/bindings/thermal/zx2967-thermal.txt > @@ -0,0 +1,109 @@ > +* ZTE zx2967 family Thermal > + > +Required Properties: > +- compatible: should be one of the following. > + * zte,zx296718-thermal > +- reg: physical base address of the controller and length of memory mapped > + region. > +- clocks : Pairs of phandle and specifier referencing the controller's clocks. > +- clock-names: "gate" for the topcrm clock. > + "pclk" for the apb clock. > +- #thermal-sensor-cells: must be 0. > + > +Example for tempsensor: > + > + tempsensor: tempsensor@148a000 { > + compatible = "zte,zx296718-thermal"; > + reg = <0x0148a000 0x20>; > + clocks = <&topcrm TEMPSENSOR_GATE>, <&audiocrm AUDIO_TS_PCLK>; > + clock-names = "gate", "pclk"; > + #thermal-sensor-cells = <0>; > + }; > + > +Example for cooling device: > + > + cooling_dev: cooling_dev { > + cluster0_cooling_dev: cluster0-cooling-dev { > + #cooling-cells = <2>; > + cpumask = <0xf>; > + capacitance = <1500>; > + }; > + > + cluster1_cooling_dev: cluster1-cooling-dev { > + #cooling-cells = <2>; > + cpumask = <0x30>; > + capacitance = <2000>; > + }; > + }; > + > +Example for thermal zones: > + > + thermal-zones { > + zx296718_thermal: zx296718_thermal { > + polling-delay-passive = <500>; > + polling-delay = <1000>; > + sustainable-power = <6500>; > + > + thermal-sensors = <&tempsensor 0>; You may want to also add here: coefficients = <1951 -922>; Those will be populated in your tz->tzp->slope and tz->tz->offset. Then you can read the already parsed data in your driver in your .get_temp() callback, for example. Can you please check if the above works for you? BR, Eduardo
diff --git a/Documentation/devicetree/bindings/thermal/zx2967-thermal.txt b/Documentation/devicetree/bindings/thermal/zx2967-thermal.txt new file mode 100644 index 0000000..a96c8b3 --- /dev/null +++ b/Documentation/devicetree/bindings/thermal/zx2967-thermal.txt @@ -0,0 +1,109 @@ +* ZTE zx2967 family Thermal + +Required Properties: +- compatible: should be one of the following. + * zte,zx296718-thermal +- reg: physical base address of the controller and length of memory mapped + region. +- clocks : Pairs of phandle and specifier referencing the controller's clocks. +- clock-names: "gate" for the topcrm clock. + "pclk" for the apb clock. +- #thermal-sensor-cells: must be 0. + +Example for tempsensor: + + tempsensor: tempsensor@148a000 { + compatible = "zte,zx296718-thermal"; + reg = <0x0148a000 0x20>; + clocks = <&topcrm TEMPSENSOR_GATE>, <&audiocrm AUDIO_TS_PCLK>; + clock-names = "gate", "pclk"; + #thermal-sensor-cells = <0>; + }; + +Example for cooling device: + + cooling_dev: cooling_dev { + cluster0_cooling_dev: cluster0-cooling-dev { + #cooling-cells = <2>; + cpumask = <0xf>; + capacitance = <1500>; + }; + + cluster1_cooling_dev: cluster1-cooling-dev { + #cooling-cells = <2>; + cpumask = <0x30>; + capacitance = <2000>; + }; + }; + +Example for thermal zones: + + thermal-zones { + zx296718_thermal: zx296718_thermal { + polling-delay-passive = <500>; + polling-delay = <1000>; + sustainable-power = <6500>; + + thermal-sensors = <&tempsensor 0>; + + trips { + trip0: switch_on_temperature { + temperature = <90000>; + hysteresis = <2000>; + type = "passive"; + }; + + trip1: desired_temperature { + temperature = <100000>; + hysteresis = <2000>; + type = "passive"; + }; + + crit: critical_temperature { + temperature = <110000>; + hysteresis = <2000>; + type = "critical"; + }; + }; + + cooling-maps { + map0 { + trip = <&trip0>; + cooling-device = <&gpu 2 5>; + }; + + map1 { + trip = <&trip0>; + cooling-device = <&cluster0_cooling_dev 1 2>; + }; + + map2 { + trip = <&trip1>; + cooling-device = <&cluster0_cooling_dev 1 2>; + }; + + map3 { + trip = <&crit>; + cooling-device = <&cluster0_cooling_dev 1 2>; + }; + + map4 { + trip = <&trip0>; + cooling-device = <&cluster1_cooling_dev 1 2>; + contribution = <9000>; + }; + + map5 { + trip = <&trip1>; + cooling-device = <&cluster1_cooling_dev 1 2>; + contribution = <4096>; + }; + + map6 { + trip = <&crit>; + cooling-device = <&cluster1_cooling_dev 1 2>; + contribution = <4096>; + }; + }; + }; + };