On Tue, Jul 18, 2017 at 03:29:40PM +0800, Icenowy Zheng wrote:
> 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@xxxxxxx>
> ---
> .../bindings/net/wireless/allwinner,xr819.txt | 37 ++++++++++++++++++++++
> 1 file changed, 37 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..64dd9c1c0584
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/net/wireless/allwinner,xr819.txt
> @@ -0,0 +1,37 @@
> +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:
> +
> + - compatible : Should be "allwinner,xr819".
reg is also required.
> +
> +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 = <®_vcc_wifi>;
> + mmc-pwrseq = <&wifi_pwrseq>;
> + bus-width = <4>;
> + non-removable;
> + status = "okay";
Don't show status in examples.
> +
> + xr819: sdio_wifi@1 {
wifi@1
> + reg = <1>;
> + compatible = "allwinner,xr819";
> + interrupt-parent = <&pio>;
> + interrupts = <6 10 IRQ_TYPE_EDGE_RISING>;
> + };
> +};
> --
> 2.13.0
>
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