linux-kernel - [PATCH] dt-bindings: input: touchscreen: goodix: clarify irq-gpios misleading text

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Message-Id: <20230419171849.946986-1-luca.ceresoli@bootlin.com>
Date:   Wed, 19 Apr 2023 19:18:49 +0200
From:   Luca Ceresoli <luca.ceresoli@...tlin.com>
To:     Dmitry Torokhov <dmitry.torokhov@...il.com>,
        devicetree@...r.kernel.org
Cc:     Luca Ceresoli <luca.ceresoli@...tlin.com>,
        Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        Stephen Boyd <sboyd@...nel.org>,
        Jarrah Gosbell <kernel@...ef.tools>,
        linux-input@...r.kernel.org, linux-kernel@...r.kernel.org,
        Thomas Petazzoni <thomas.petazzoni@...tlin.com>
Subject: [PATCH] dt-bindings: input: touchscreen: goodix: clarify irq-gpios misleading text

The irq-gpios description misleading, apparently saying that driving the
IRQ GPIO resets the device, which is even more puzzling as there is a reset
GPIO as well.

In reality the IRQ pin can be driven during the reset sequence to configure
the client address, as it becomes clear after checking both the datasheet
and the driver code. Improve the text to clarify that.

Also rephrase to remove reference to the driver, which is not appropriate
in the bindings.

Signed-off-by: Luca Ceresoli <luca.ceresoli@...tlin.com>
---
 .../devicetree/bindings/input/touchscreen/goodix.yaml         | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/Documentation/devicetree/bindings/input/touchscreen/goodix.yaml b/Documentation/devicetree/bindings/input/touchscreen/goodix.yaml
index 3d016b87c8df..26ad104052ba 100644
--- a/Documentation/devicetree/bindings/input/touchscreen/goodix.yaml
+++ b/Documentation/devicetree/bindings/input/touchscreen/goodix.yaml
@@ -37,8 +37,8 @@ properties:
     maxItems: 1
 
   irq-gpios:
-    description: GPIO pin used for IRQ. The driver uses the interrupt gpio pin
-      as output to reset the device.
+    description: GPIO pin used for IRQ. The IRQ line can be driven during the
+      reset sequence to configure the client address.
     maxItems: 1
 
   reset-gpios:
-- 
2.34.1