From mboxrd@z Thu Jan 1 00:00:00 1970 From: pawel.mikolaj.chmiel@gmail.com (=?UTF-8?q?Pawe=C5=82=20Chmiel?=) Date: Tue, 31 Jul 2018 17:18:11 +0200 Subject: [PATCH v3 3/3] Input: atmel_mxt_ts: Document optional voltage regulators In-Reply-To: <1533050291-11502-1-git-send-email-pawel.mikolaj.chmiel@gmail.com> References: <1533050291-11502-1-git-send-email-pawel.mikolaj.chmiel@gmail.com> Message-ID: <1533050291-11502-4-git-send-email-pawel.mikolaj.chmiel@gmail.com> To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org Document new optional voltage regulators, which can be used to power down/up touchscreen. Signed-off-by: Pawe? Chmiel Reviewed-by: Rob Herring --- Changes from v1: - Added reviewed-by --- Documentation/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 at 4b { @@ -38,4 +44,6 @@ Example: reg = <0x4b>; interrupt-parent = <&gpio>; interrupts = ; + avdd-supply = <&atsp_reg>; + vdd-supply = <&tsp_reg>; }; -- 2.7.4