Hi,

On Tue, Nov 21, 2017 at 04:21:28PM +0800, Phil Reid wrote:
> This flag set the mcp23s08 device irq type to open drain active low.
> 
> Signed-off-by: Phil Reid <preid@electromag.com.au>
> ---

Reviewed-by: Sebastian Reichel <sebastian.reichel@collabora.co.uk>

-- Sebastian

>  Documentation/devicetree/bindings/pinctrl/pinctrl-mcp23s08.txt | 2 ++
>  1 file changed, 2 insertions(+)
> 
> diff --git a/Documentation/devicetree/bindings/pinctrl/pinctrl-mcp23s08.txt b/Documentation/devicetree/bindings/pinctrl/pinctrl-mcp23s08.txt
> index 9c451c2..a5a8322 100644
> --- a/Documentation/devicetree/bindings/pinctrl/pinctrl-mcp23s08.txt
> +++ b/Documentation/devicetree/bindings/pinctrl/pinctrl-mcp23s08.txt
> @@ -45,6 +45,8 @@ Optional properties:
>    - first cell is the pin number
>    - second cell is used to specify flags.
>  - interrupt-controller: Marks the device node as a interrupt controller.
> +- drive-open-drain: Sets the ODR flag in the IOCON register. This configures
> +        the IRQ output as open drain active low.
>  
>  Optional device specific properties:
>  - microchip,irq-mirror: Sets the mirror flag in the IOCON register. Devices
> -- 
> 1.8.3.1
>