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    Subject[PATCH v3 1/2] dt-bindings: add device tree binding for Allwinner XR819 SDIO Wi-Fi
    Date
    Allwinner XR819 is a SDIO Wi-Fi chip, which has the functionality to use
    an out-of-band interrupt pin instead of SDIO in-band interrupt.

    Add the device tree binding of this chip, in order to make it possible
    to add this interrupt pin to device trees.

    Signed-off-by: Icenowy Zheng <icenowy@aosc.io>
    Acked-by: Rob Herring <robh@kernel.org>
    ---
    Changes in v3:
    - Renames the node name.
    - Adds ACK from Rob.
    Changes in v2:
    - Removed status property in example.
    - Added required property reg.

    .../bindings/net/wireless/allwinner,xr819.txt | 38 ++++++++++++++++++++++
    1 file changed, 38 insertions(+)
    create mode 100644 Documentation/devicetree/bindings/net/wireless/allwinner,xr819.txt

    diff --git a/Documentation/devicetree/bindings/net/wireless/allwinner,xr819.txt b/Documentation/devicetree/bindings/net/wireless/allwinner,xr819.txt
    new file mode 100644
    index 000000000000..7ae40441e343
    --- /dev/null
    +++ b/Documentation/devicetree/bindings/net/wireless/allwinner,xr819.txt
    @@ -0,0 +1,38 @@
    +Allwinner XRadio wireless SDIO devices
    +
    +This node provides properties for controlling the XRadio wireless device. The
    +node is expected to be specified as a child node to the SDIO controller that
    +connects the device to the system.
    +
    +Required properties:
    +
    + - reg : The SDIO function number, see "Use of function subnodes" in
    + ../../mmc/mmc.txt.
    + - compatible : Should be "allwinner,xr819".
    +
    +Optional properties:
    + - interrupt-parent : the phandle for the interrupt controller to which the
    + device interrupts are connected.
    + - interrupts : specifies attributes for the out-of-band interrupt (host-wake).
    + When not specified the device will use in-band SDIO interrupts.
    +
    +Example:
    +
    +mmc1: mmc@01c10000 {
    + #address-cells = <1>;
    + #size-cells = <0>;
    +
    + pinctrl-names = "default";
    + pinctrl-0 = <&mmc1_pins_a>;
    + vmmc-supply = <&reg_vcc_wifi>;
    + mmc-pwrseq = <&wifi_pwrseq>;
    + bus-width = <4>;
    + non-removable;
    +
    + xr819: wifi@1 {
    + reg = <1>;
    + compatible = "allwinner,xr819";
    + interrupt-parent = <&pio>;
    + interrupts = <6 10 IRQ_TYPE_EDGE_RISING>;
    + };
    +};
    --
    2.13.5
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