On Tue, 19 Feb 2019 15:46:26 +0530, Jagan Teki wrote: > Goodix CTP controllers support analog, digital and gpio regulator > supplies on relevant controller pin configurations. > > Out of which AVDD28 and VDDIO regulators are required in few goodix CTP > chips during power-on sequence. > > AVDD22, DVDD12 regulators have no relevant functionality described from > datasheet [1]. > > So, document both AVDD28, VDDIO regulators into optional properties since > few of the goodix chip do work without these regulator power-on sequence. > > [1] GT5663 Datasheet_English_20151106_Rev.01 > > Signed-off-by: Jagan Teki <jagan@xxxxxxxxxxxxxxxxxxxx> > --- > Documentation/devicetree/bindings/input/touchscreen/goodix.txt | 2 ++ > 1 file changed, 2 insertions(+) > Reviewed-by: Rob Herring <robh@xxxxxxxxxx>
