| Message ID | 20210108192337.563679-1-stephan@gerhold.net |
|---|---|
| State | Superseded |
| Headers | show |
| Series | [1/2] dt-bindings: input: touchscreen: edt-ft5x06: add iovcc-supply | expand |
On Fri, 08 Jan 2021 20:23:36 +0100, Stephan Gerhold wrote: > At the moment, the edt-ft5x06 driver can control a single regulator > ("vcc"). However, some FocalTech touch controllers have an additional > IOVCC pin that should be supplied with the digital I/O voltage. > > The I/O voltage might be provided by another regulator that should also > be kept on. Otherwise, the touchscreen can randomly stop functioning if > the regulator is turned off because no other components still require it. > > Document (optional) support for controlling the regulator for IOVCC > using "iovcc-supply". > > Cc: Ondrej Jirman <megous@megous.com> > Cc: Marco Felsch <m.felsch@pengutronix.de> > Signed-off-by: Stephan Gerhold <stephan@gerhold.net> > --- > .../devicetree/bindings/input/touchscreen/edt-ft5x06.yaml | 1 + > 1 file changed, 1 insertion(+) > Acked-by: Rob Herring <robh@kernel.org>
diff --git a/Documentation/devicetree/bindings/input/touchscreen/edt-ft5x06.yaml b/Documentation/devicetree/bindings/input/touchscreen/edt-ft5x06.yaml index bfc3a8b5e118..2e8da7470513 100644 --- a/Documentation/devicetree/bindings/input/touchscreen/edt-ft5x06.yaml +++ b/Documentation/devicetree/bindings/input/touchscreen/edt-ft5x06.yaml @@ -56,6 +56,7 @@ properties: wakeup-source: true vcc-supply: true + iovcc-supply: true gain: description: Allows setting the sensitivity in the range from 0 to 31.
At the moment, the edt-ft5x06 driver can control a single regulator ("vcc"). However, some FocalTech touch controllers have an additional IOVCC pin that should be supplied with the digital I/O voltage. The I/O voltage might be provided by another regulator that should also be kept on. Otherwise, the touchscreen can randomly stop functioning if the regulator is turned off because no other components still require it. Document (optional) support for controlling the regulator for IOVCC using "iovcc-supply". Cc: Ondrej Jirman <megous@megous.com> Cc: Marco Felsch <m.felsch@pengutronix.de> Signed-off-by: Stephan Gerhold <stephan@gerhold.net> --- .../devicetree/bindings/input/touchscreen/edt-ft5x06.yaml | 1 + 1 file changed, 1 insertion(+)