On Mon, Nov 09, 2015 at 11:13:31AM +0100, Sascha Hauer wrote:
> This adds the device tree binding documentation for the mediatek thermal
> controller found on Mediatek MT8173 and other SoCs.
>
> Signed-off-by: Sascha Hauer <s.hauer@xxxxxxxxxxxxxx>
> Reviewed-by: Daniel Kurtz <djkurtz@xxxxxxxxxxxx>
Acked-by: Rob Herring <robh@xxxxxxxxxx>
> ---
> .../bindings/thermal/mediatek-thermal.txt | 43 ++++++++++++++++++++++
> 1 file changed, 43 insertions(+)
> create mode 100644 Documentation/devicetree/bindings/thermal/mediatek-thermal.txt
>
> diff --git a/Documentation/devicetree/bindings/thermal/mediatek-thermal.txt b/Documentation/devicetree/bindings/thermal/mediatek-thermal.txt
> new file mode 100644
> index 0000000..81f9a51
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/thermal/mediatek-thermal.txt
> @@ -0,0 +1,43 @@
> +* Mediatek Thermal
> +
> +This describes the device tree binding for the Mediatek thermal controller
> +which measures the on-SoC temperatures. This device does not have its own ADC,
> +instead it directly controls the AUXADC via AHB bus accesses. For this reason
> +this device needs phandles to the AUXADC. Also it controls a mux in the
> +apmixedsys register space via AHB bus accesses, so a phandle to the APMIXEDSYS
> +is also needed.
> +
> +Required properties:
> +- compatible: "mediatek,mt8173-thermal"
> +- reg: Address range of the thermal controller
> +- interrupts: IRQ for the thermal controller
> +- clocks, clock-names: Clocks needed for the thermal controller. required
> + clocks are:
> + "therm": Main clock needed for register access
> + "auxadc": The AUXADC clock
> +- resets: Reference to the reset controller controlling the thermal controller.
> +- mediatek,auxadc: A phandle to the AUXADC which the thermal controller uses
> +- mediatek,apmixedsys: A phandle to the APMIXEDSYS controller.
> +- #thermal-sensor-cells : Should be 0. See ./thermal.txt for a description.
> +
> +Optional properties:
> +- nvmem-cells: A phandle to the calibration data provided by a nvmem device. If
> + unspecified default values shall be used.
> +- nvmem-cell-names: Should be "calibration-data"
> +
> +Example:
> +
> + thermal: thermal@1100b000 {
> + #thermal-sensor-cells = <1>;
> + compatible = "mediatek,mt8173-thermal";
> + reg = <0 0x1100b000 0 0x1000>;
> + interrupts = <0 70 IRQ_TYPE_LEVEL_LOW>;
> + clocks = <&pericfg CLK_PERI_THERM>, <&pericfg CLK_PERI_AUXADC>;
> + clock-names = "therm", "auxadc";
> + resets = <&pericfg MT8173_PERI_THERM_SW_RST>;
> + reset-names = "therm";
> + mediatek,auxadc = <&auxadc>;
> + mediatek,apmixedsys = <&apmixedsys>;
> + nvmem-cells = <&thermal_calibration_data>;
> + nvmem-cell-names = "calibration-data";
> + };
> --
> 2.6.1
>
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