[PATCH v5 2/5] dt-bindings: gpio: add raspberry pi GPIO expander binding

[Rob Herring]

On Tue, Feb 20, 2018 at 6:19 AM, Baruch Siach <baruch at tkos.co.il> wrote:
> The Raspberry Pi 3 GPIO expander is controlled by the VC4 firmware over
> I2C. The firmware mailbox interface allows the ARM core to control the
> GPIO lines.
>
> Signed-off-by: Baruch Siach <baruch at tkos.co.il>
> ---
> v5:
>   * Remove the 'firmware' property
>   * Note that the gpio node is a child of the firmware node
>
> v4:
>   * Move the example gpio node under the firmware node
>   * Rename gpio node name to plain 'gpio'
>
> v3:
>   * Rename node name.
>
> v2:
>   * Rename compatible string to raspberrypi,firmware-gpio
> ---
>  .../bindings/gpio/raspberrypi,firmware-gpio.txt    | 30 ++++++++++++++++++++++
>  1 file changed, 30 insertions(+)
>  create mode 100644 Documentation/devicetree/bindings/gpio/raspberrypi,firmware-gpio.txt

Reviewed-by: Rob Herring <robh at kernel.org>