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    Subject[PATCH 1/3] dt-bindings: thermal: Add binding document for Mediatek thermal controller
    Date
    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@pengutronix.de>
    Reviewed-by: Daniel Kurtz <djkurtz@chromium.org>
    Acked-by: Rob Herring <robh@kernel.org>
    ---
    .../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";
    + };
    --
    2.6.2


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