| Message ID | 1426751849-10604-4-git-send-email-kong.kongxinwei@hisilicon.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
On Thu, Mar 19, 2015 at 07:57:29AM +0000, kongxinwei wrote: > This adds documentation of device tree bindings for the > thermal sensor controller of hi6220 SoC. Please place the patches adding binding docs _before_ any patcheds introducing code or dts files using them. > > Signed-off-by: Leo Yan <leo.yan@linaro.org> > Signed-off-by: kongxinwei <kong.kongxinwei@hisilicon.com> > --- > .../bindings/thermal/hisilicon-thermal.txt | 51 ++++++++++++++++++++++ > 1 file changed, 51 insertions(+) > create mode 100644 Documentation/devicetree/bindings/thermal/hisilicon-thermal.txt > > diff --git a/Documentation/devicetree/bindings/thermal/hisilicon-thermal.txt b/Documentation/devicetree/bindings/thermal/hisilicon-thermal.txt > new file mode 100644 > index 0000000..b75c48e > --- /dev/null > +++ b/Documentation/devicetree/bindings/thermal/hisilicon-thermal.txt > @@ -0,0 +1,51 @@ > +* Hisilicon Thermal > + > +This driver is for hi6220 SoC which contain 4 thermal sensor. > + > + 1. sensor 0: local sensor; > + 2. sensor 1: remote sensor for ACPU cluster 1; > + 3. sensor 2: remote sensor for ACPU cluster 2; > + 4. sensor 3: remote sensor for GPU. > + > +Every sensor use one child node to represent it, so thermal sensor include > +parent node and four child node. The parent node describe common feature and > +child node describe private feature for thermal sensor; > + > +** Required properties : > + > +- compatible : "hisilicon,tsensor"; > +- reg : address range of the thermal sensor registers; Is there jsut the one block? > +- interrupt : Standard way to define interrupt numbr; Describe what the interrupt logically is from the PoV of this device. We all know what an interrupt is in abstract. > +- clock-names : Should be "thermal_clk". What is the clock input actually called on the data sheet? Is this the only clock input? No regulators or other inputs we need to describe? > + See: Documentation/devicetree/bindings/resource-names.txt; Drop this, it's irrelevant. > +- clocks : Phandle of the clock used by the thermal sensor. Define this in terms of clock-names. > + See: Documentation/devicetree/bindings/clock/clock-bindingm.txt Drop this. This is pointless, exepcially given the typo. > +- #thermal-sensor-cells : Should be 1. See ./thermal.txt for a description; Define what the permitted values are. This is useless as-is. > + > +** Required properties for child nodes : > + > +- hisilicon,tsensor-id : the index of thermal senor; As with #thermal-sensor-cells, this description is incomplete. > +- hisilicon,tsensor-thres-temp : the interrupt threshold temperature of > + thermal senor; > +- hisilicon,tsensor-reset-temp : the reset temperature of the hardware SoC; NAK. These do not belong on the sensor. > +- hisilicon,tsensor-bind-irq : systerm interrupt binding thermal sensor; NAK. I've tried a few times, but I still can't figure out what this is intended to mean. I don't see what this could possibly mean that would be reasonable to describe. Mark. > + > +Example : > + > + tsensor: tsensor@0,f7030700 { > + compatible = "hisilicon,tsensor"; > + reg = <0x0 0xf7030700 0x0 0x1000>; > + interrupts = <0 7 0x4>; > + clocks = <&clock_sys HI6220_TSENSOR_CLK>; > + clock-names = "thermal_clk"; > + #thermal-sensor-cells = <1>; > + > + local_sensor { > + hisilicon,tsensor-id = <0>; > + hisilicon,tsensor-lag-value = <10>; > + hisilicon,tsensor-thres-temp = <35000>; > + hisilicon,tsensor-reset-temp = <100000>; > + hisilicon,tsensor-bind-irq; > + } > + ....... > + } > -- > 1.9.1 > > > -- > To unsubscribe from this list: send the line "unsubscribe devicetree" in > the body of a message to majordomo@vger.kernel.org > More majordomo info at http://vger.kernel.org/majordomo-info.html >
diff --git a/Documentation/devicetree/bindings/thermal/hisilicon-thermal.txt b/Documentation/devicetree/bindings/thermal/hisilicon-thermal.txt new file mode 100644 index 0000000..b75c48e --- /dev/null +++ b/Documentation/devicetree/bindings/thermal/hisilicon-thermal.txt @@ -0,0 +1,51 @@ +* Hisilicon Thermal + +This driver is for hi6220 SoC which contain 4 thermal sensor. + + 1. sensor 0: local sensor; + 2. sensor 1: remote sensor for ACPU cluster 1; + 3. sensor 2: remote sensor for ACPU cluster 2; + 4. sensor 3: remote sensor for GPU. + +Every sensor use one child node to represent it, so thermal sensor include +parent node and four child node. The parent node describe common feature and +child node describe private feature for thermal sensor; + +** Required properties : + +- compatible : "hisilicon,tsensor"; +- reg : address range of the thermal sensor registers; +- interrupt : Standard way to define interrupt numbr; +- clock-names : Should be "thermal_clk". + See: Documentation/devicetree/bindings/resource-names.txt; +- clocks : Phandle of the clock used by the thermal sensor. + See: Documentation/devicetree/bindings/clock/clock-bindingm.txt +- #thermal-sensor-cells : Should be 1. See ./thermal.txt for a description; + +** Required properties for child nodes : + +- hisilicon,tsensor-id : the index of thermal senor; +- hisilicon,tsensor-thres-temp : the interrupt threshold temperature of + thermal senor; +- hisilicon,tsensor-reset-temp : the reset temperature of the hardware SoC; +- hisilicon,tsensor-bind-irq : systerm interrupt binding thermal sensor; + +Example : + + tsensor: tsensor@0,f7030700 { + compatible = "hisilicon,tsensor"; + reg = <0x0 0xf7030700 0x0 0x1000>; + interrupts = <0 7 0x4>; + clocks = <&clock_sys HI6220_TSENSOR_CLK>; + clock-names = "thermal_clk"; + #thermal-sensor-cells = <1>; + + local_sensor { + hisilicon,tsensor-id = <0>; + hisilicon,tsensor-lag-value = <10>; + hisilicon,tsensor-thres-temp = <35000>; + hisilicon,tsensor-reset-temp = <100000>; + hisilicon,tsensor-bind-irq; + } + ....... + }