lkml.org 
[lkml]   [2018]   [Dec]   [7]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
Patch in this message
/
From
Subject[PATCH v4 3/3] Input: atmel_mxt_ts: Document optional voltage regulators
Date
Document new optional voltage regulators, which can be used
to power down/up touchscreen.

Signed-off-by: Paweł Chmiel <pawel.mikolaj.chmiel@gmail.com>
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
\
 
 \ /
  Last update: 2018-12-07 15:29    [W:0.059 / U:2.084 seconds]
©2003-2018 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site