From mboxrd@z Thu Jan 1 00:00:00 1970 From: Jagan Teki Subject: [PATCH v7 1/4] dt-bindings: input: touchscreen: goodix: Document regulator properties Date: Thu, 21 Mar 2019 13:51:01 +0530 Message-ID: <20190321082104.2874-2-jagan@amarulasolutions.com> References: <20190321082104.2874-1-jagan@amarulasolutions.com> Mime-Version: 1.0 Content-Transfer-Encoding: 8bit Return-path: In-Reply-To: <20190321082104.2874-1-jagan@amarulasolutions.com> Sender: linux-kernel-owner@vger.kernel.org To: Dmitry Torokhov , Bastien Nocera , Rob Herring Cc: Henrik Rydberg , linux-input@vger.kernel.org, linux-kernel@vger.kernel.org, devicetree@vger.kernel.org, Mark Rutland , linux-amarula@amarulasolutions.com, Michael Trimarchi , Jagan Teki List-Id: linux-input@vger.kernel.org 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 Reviewed-by: Rob Herring --- Documentation/devicetree/bindings/input/touchscreen/goodix.txt | 2 ++ 1 file changed, 2 insertions(+) diff --git a/Documentation/devicetree/bindings/input/touchscreen/goodix.txt b/Documentation/devicetree/bindings/input/touchscreen/goodix.txt index 8cf0b4d38a7e..255673250bbd 100644 --- a/Documentation/devicetree/bindings/input/touchscreen/goodix.txt +++ b/Documentation/devicetree/bindings/input/touchscreen/goodix.txt @@ -19,6 +19,8 @@ Optional properties: - irq-gpios : GPIO pin used for IRQ. The driver uses the interrupt gpio pin as output to reset the device. - reset-gpios : GPIO pin used for reset + - AVDD28-supply : Analog power supply regulator on AVDD28 pin + - VDDIO-supply : GPIO power supply regulator on VDDIO pin - touchscreen-inverted-x - touchscreen-inverted-y - touchscreen-size-x -- 2.18.0.321.gffc6fa0e3