linux-kernel - [PATCH v2 1/2] dt-bindings: input: touchscreen: goodix: Add no-reset-pull-up property

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Message-Id: <20250429-goodix-no-reset-pull-up-v2-1-0687a4ad5a04@geanix.com>
Date: Tue, 29 Apr 2025 11:56:11 +0200
From: Esben Haabendal <esben@...nix.com>
To: Dmitry Torokhov <dmitry.torokhov@...il.com>, 
 Rob Herring <robh@...nel.org>, Krzysztof Kozlowski <krzk+dt@...nel.org>, 
 Conor Dooley <conor+dt@...nel.org>, Hans de Goede <hdegoede@...hat.com>
Cc: linux-input@...r.kernel.org, devicetree@...r.kernel.org, 
 linux-kernel@...r.kernel.org, Esben Haabendal <esben@...nix.com>
Subject: [PATCH v2 1/2] dt-bindings: input: touchscreen: goodix: Add
 no-reset-pull-up property

This should be added for boards where there is no pull-up on the reset pin,
as the driver will otherwise switch the reset signal to high-impedance to
save power, which obviously not safe without pull-up.

Signed-off-by: Esben Haabendal <esben@...nix.com>
---
 Documentation/devicetree/bindings/input/touchscreen/goodix.yaml | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/Documentation/devicetree/bindings/input/touchscreen/goodix.yaml b/Documentation/devicetree/bindings/input/touchscreen/goodix.yaml
index eb4992f708b70fef93bd4b59b9565123f7c6ad5d..21ac13046b6e021eeb403d854aabc945801dd29f 100644
--- a/Documentation/devicetree/bindings/input/touchscreen/goodix.yaml
+++ b/Documentation/devicetree/bindings/input/touchscreen/goodix.yaml
@@ -45,6 +45,10 @@ properties:
   reset-gpios:
     maxItems: 1
 
+  goodix,no-reset-pull-up:
+    type: boolean
+    description: There is no pull-up on reset pin
+
   AVDD28-supply:
     description: Analog power supply regulator on AVDD28 pin
 

-- 
2.49.0