From: "Paweł Chmiel" <pawel.mikolaj.chmiel@gmail.com>
To: nick@shmanahar.org
Cc: dmitry.torokhov@gmail.com, robh+dt@kernel.org,
mark.rutland@arm.com, nicolas.ferre@microchip.com,
alexandre.belloni@bootlin.com, linux-input@vger.kernel.org,
devicetree@vger.kernel.org, linux-arm-kernel@lists.infradead.org,
linux-kernel@vger.kernel.org,
"Paweł Chmiel" <pawel.mikolaj.chmiel@gmail.com>
Subject: [PATCH v4 3/3] Input: atmel_mxt_ts: Document optional voltage regulators
Date: Fri, 7 Dec 2018 15:28:57 +0100 [thread overview]
Message-ID: <20181207142857.15818-4-pawel.mikolaj.chmiel@gmail.com> (raw)
In-Reply-To: <20181207142857.15818-1-pawel.mikolaj.chmiel@gmail.com>
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
prev parent reply other threads:[~2018-12-07 14:29 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-12-07 14:28 [PATCH v4 0/3] Input: atmel_mxt_ts: Add support for optional regulators Paweł Chmiel
2018-12-07 14:28 ` [PATCH v4 1/3] " Paweł Chmiel
2018-12-09 4:26 ` Dmitry Torokhov
2018-12-14 15:11 ` Paweł Chmiel
2018-12-07 14:28 ` [PATCH v4 2/3] Input: atmel_mxt_ts: Wait for device be ready for communication Paweł Chmiel
2018-12-07 14:28 ` Paweł Chmiel [this message]
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