| Message ID | 20190219101629.15977-2-jagan@amarulasolutions.com (mailing list archive) |
|---|---|
| State | Superseded |
| Headers | show |
| Series | input: touchscreen: Add goodix GT5553 CTP support | expand |
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@amarulasolutions.com> > --- > Documentation/devicetree/bindings/input/touchscreen/goodix.txt | 2 ++ > 1 file changed, 2 insertions(+) > Reviewed-by: Rob Herring <robh@kernel.org>
diff --git a/Documentation/devicetree/bindings/input/touchscreen/goodix.txt b/Documentation/devicetree/bindings/input/touchscreen/goodix.txt index f7e95c52f3c7..b9b8f196dc90 100644 --- a/Documentation/devicetree/bindings/input/touchscreen/goodix.txt +++ b/Documentation/devicetree/bindings/input/touchscreen/goodix.txt @@ -23,6 +23,8 @@ Optional properties: - touchscreen-inverted-y : Y axis is inverted (boolean) - touchscreen-swapped-x-y : X and Y axis are swapped (boolean) (swapping is done after inverting the axis) + - AVDD28-supply : Analog power supply regulator on AVDD28 pin + - VDDIO-supply : GPIO power supply regulator on VDDIO pin Example:
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@amarulasolutions.com> --- Documentation/devicetree/bindings/input/touchscreen/goodix.txt | 2 ++ 1 file changed, 2 insertions(+)