[PATCH v4 3/3] Input: atmel_mxt_ts: Document optional voltage regulators
From: Paweł Chmiel <hidden>
Date: 2018-12-07 14:29:15
Also in:
linux-arm-kernel, linux-devicetree, lkml
Subsystem:
input (keyboard, mouse, joystick, touchscreen) drivers, open firmware and flattened device tree bindings, the rest · Maintainers:
Dmitry Torokhov, Rob Herring, Krzysztof Kozlowski, Conor Dooley, Linus Torvalds
Document new optional voltage regulators, which can be used to power down/up touchscreen. Signed-off-by: Paweł Chmiel <redacted> Reviewed-by: Rob Herring <robh@kernel.org> --- 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