Hi Vincent, thanks for the patch! Including Bartosz who is kind of default maintainer for this component. On Wed, Sep 5, 2018 at 3:26 PM Vincent Whitchurch <vincent.whitchurch@xxxxxxxx> wrote: > > This is a dummy GPIO controller which can be used in place of the real > hardware GPIO controller (for example, an external GPIO expander) before > actual hardware is available. > > Signed-off-by: Vincent Whitchurch <vincent.whitchurch@xxxxxxxx> This looks generally helpful. I don't know what the DT maintainers think, but I am positive, I think rapid prototyping is a valid usecase. We used to have the driver for testing only but this usecase is just as valid. > +Required properties: > +- compatible: Should contain "gpio-mockup" > +- gpio-controller : Marks the device node as a gpio controller. > +- #gpio-cells : Should be two. The first cell is the pin number and > + the second cell is used to specify the gpio polarity: > + 0 = active high > + 1 = active low > +- nr-gpios: The number of dummy GPIOs For this there is a standardized binding "ngpios" in gpio.txt so just use that and reference gpio.txt please. Yours, Linus Walleij
