| Message ID | 20181214151214.5391-4-pawel.mikolaj.chmiel@gmail.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
| Series | Input: atmel_mxt_ts: Add support for optional regulators | expand |
Hi, On Fri, Dec 14, 2018 at 04:12:14PM +0100, Paweł Chmiel wrote: > Document new optional voltage regulators, which can be used > to power down/up touchscreen. > > Signed-off-by: Paweł Chmiel <pawel.mikolaj.chmiel@gmail.com> > Reviewed-by: Rob Herring <robh@kernel.org> Reviewed-by: Sebastian Reichel <sebastian.reichel@collabora.com> -- Sebastian > --- > Changes from v1: > - Added reviewed-by > --- > .../devicetree/bindings/input/atmel,maxtouch.txt | 8 ++++++++ > 1 file changed, 8 insertions(+) > > diff --git a/Documentation/devicetree/bindings/input/atmel,maxtouch.txt b/Documentation/devicetree/bindings/input/atmel,maxtouch.txt > index c88919480d37..17930ecadad3 100644 > --- a/Documentation/devicetree/bindings/input/atmel,maxtouch.txt > +++ b/Documentation/devicetree/bindings/input/atmel,maxtouch.txt > @@ -31,6 +31,12 @@ Optional properties for main touchpad device: > > - reset-gpios: GPIO specifier for the touchscreen's reset pin (active low) > > +- avdd-supply: Analog power supply. It powers up the analog channel block > + of the controller to detect the touches. > + > +- vdd-supply: Digital power supply. It powers up the digital block > + of the controller to enable i2c communication. > + > Example: > > touch@4b { > @@ -38,4 +44,6 @@ Example: > reg = <0x4b>; > interrupt-parent = <&gpio>; > interrupts = <TEGRA_GPIO(W, 3) IRQ_TYPE_LEVEL_LOW>; > + avdd-supply = <&atsp_reg>; > + vdd-supply = <&tsp_reg>; > }; > -- > 2.17.1 > > > _______________________________________________ > linux-arm-kernel mailing list > linux-arm-kernel@lists.infradead.org > http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
diff --git a/Documentation/devicetree/bindings/input/atmel,maxtouch.txt b/Documentation/devicetree/bindings/input/atmel,maxtouch.txt index c88919480d37..17930ecadad3 100644 --- a/Documentation/devicetree/bindings/input/atmel,maxtouch.txt +++ b/Documentation/devicetree/bindings/input/atmel,maxtouch.txt @@ -31,6 +31,12 @@ Optional properties for main touchpad device: - reset-gpios: GPIO specifier for the touchscreen's reset pin (active low) +- avdd-supply: Analog power supply. It powers up the analog channel block + of the controller to detect the touches. + +- vdd-supply: Digital power supply. It powers up the digital block + of the controller to enable i2c communication. + Example: touch@4b { @@ -38,4 +44,6 @@ Example: reg = <0x4b>; interrupt-parent = <&gpio>; interrupts = <TEGRA_GPIO(W, 3) IRQ_TYPE_LEVEL_LOW>; + avdd-supply = <&atsp_reg>; + vdd-supply = <&tsp_reg>; };