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Message-Id: <1531851386-17840-3-git-send-email-pawel.mikolaj.chmiel@gmail.com>
Date: Tue, 17 Jul 2018 20:16:26 +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 v2 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
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