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    Subject[PATCH 02/10] mfd: ac100: Add device tree bindings for X-Powers AC100 codec/RTC combo IC
    Date
    Signed-off-by: Chen-Yu Tsai <wens@csie.org>
    ---
    Documentation/devicetree/bindings/mfd/ac100.txt | 42 +++++++++++++++++++++++++
    1 file changed, 42 insertions(+)
    create mode 100644 Documentation/devicetree/bindings/mfd/ac100.txt

    diff --git a/Documentation/devicetree/bindings/mfd/ac100.txt b/Documentation/devicetree/bindings/mfd/ac100.txt
    new file mode 100644
    index 000000000000..fbab623e6fba
    --- /dev/null
    +++ b/Documentation/devicetree/bindings/mfd/ac100.txt
    @@ -0,0 +1,42 @@
    +X-Powers AC100 Codec/RTC IC device tree bindings
    +
    +AC100 is a audio codec and RTC subsystem combo IC. The 2 parts are
    +separated, including power supplies and interrupt lines, but share
    +a common register address space and host interface.
    +
    +Required properties:
    +- compatible: "x-powers,ac100"
    +- reg: The I2C slave address or RSB hardware address for the chip
    +- sub-nodes:
    + - codec
    + - compatible: "x-powers,ac100-codec"
    + - interrupt-parent: The parent interrupt controller
    + - interrupts: SoC NMI / GPIO interrupt connected to the IRQ_AUDIO pin
    + - rtc
    + - compatible: "x-powers,ac100-rtc"
    + - interrupt-parent: The parent interrupt controller
    + - interrupts: SoC NMI / GPIO interrupt connected to the IRQ_RTC pin
    + - #clock-cells: shall be 1
    + - clock-output-names: "cko1_rtc", "cko2_rtc", "cko3_rtc"
    + - see clock/clock-bindings.txt for common clock bindings
    +
    +Example:
    +
    +ac100: codec@e89 {
    + compatible = "x-powers,ac100";
    + reg = <0xe89>;
    +
    + ac100_codec {
    + compatible = "x-powers,ac100-codec";
    + interrupt-parent = <&nmi_intc>;
    + interrupts = <0 IRQ_TYPE_LEVEL_LOW>;
    + };
    +
    + ac100_rtc {
    + compatible = "x-powers,ac100-rtc";
    + interrupt-parent = <&nmi_intc>;
    + interrupts = <0 IRQ_TYPE_LEVEL_LOW>;
    + #clock-cells = <1>;
    + clock-output-names = "cko1_rtc", "cko2_rtc", "cko3_rtc";
    + };
    +};
    --
    2.8.1
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