On Tue, Sep 10, 2019 at 4:29 PM Paul Kocialkowski <paul.kocialkowski@xxxxxxxxxxx> wrote: > The Xylon LogiCVC display controller exports some GPIOs, which are > exposed as a dedicated driver. > > This introduces the associated device-tree bindings documentation. > > Signed-off-by: Paul Kocialkowski <paul.kocialkowski@xxxxxxxxxxx> (...) > +The controller exposes GPIOs from the display and power control registers, > +which are mapped by the driver as follows: > +- GPIO[4:0] (display control) mapped to index 0-4 > +- EN_BLIGHT (power control) mapped to index 5 > +- EN_VDD (power control) mapped to index 6 > +- EN_VEE (power control) mapped to index 7 > +- V_EN (power control) mapped to index 8 This should be reflected in the gpio-line-names in the example and in your device trees. Yours, Linus Walleij