linux-kernel - [PATCH 2/2] Input: atmel_mxt_ts: Document optional voltage regulators

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-Id: <1531506608-24479-3-git-send-email-pawel.mikolaj.chmiel@gmail.com>
Date:   Fri, 13 Jul 2018 20:30:08 +0200
From:   Paweł Chmiel <pawel.mikolaj.chmiel@...il.com>
To:     nick@...anahar.org
Cc:     dmitry.torokhov@...il.com, robh+dt@...nel.org,
        mark.rutland@....com, nicolas.ferre@...rochip.com,
        alexandre.belloni@...tlin.com, linux-input@...r.kernel.org,
        devicetree@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
        linux-kernel@...r.kernel.org,
        Paweł Chmiel <pawel.mikolaj.chmiel@...il.com>
Subject: [PATCH 2/2] Input: atmel_mxt_ts: Document optional voltage regulators

Document new optional voltage regulators, which can be used
to power down/up touchscreen.

Signed-off-by: Paweł Chmiel <pawel.mikolaj.chmiel@...il.com>
---
 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@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>;
 	};
-- 
2.7.4