linux-kernel - [PATCH v4 1/2] dt-bindings: iio: light: bh1750: Add reset-gpios property

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Message-ID: <20250318194624.7626-1-sergio@pereznus.es>
Date: Tue, 18 Mar 2025 20:45:54 +0100
From: Sergio Perez <sergio@...eznus.es>
To: linux-iio@...r.kernel.org
Cc: devicetree@...r.kernel.org,
	Sergio Perez <sergio@...eznus.es>,
	Tomasz Duszynski <tduszyns@...il.com>,
	Jonathan Cameron <jic23@...nel.org>,
	Lars-Peter Clausen <lars@...afoo.de>,
	Rob Herring <robh@...nel.org>,
	Krzysztof Kozlowski <krzk+dt@...nel.org>,
	Conor Dooley <conor+dt@...nel.org>,
	linux-kernel@...r.kernel.org (open list)
Subject: [PATCH v4 1/2] dt-bindings: iio: light: bh1750: Add reset-gpios property

Some BH1750 sensors require a hardware reset via GPIO before they can
be properly detected on the I2C bus. Add a new reset-gpios property
to the binding to support this functionality.

The reset-gpios property allows specifying a GPIO that will be toggled
during driver initialization to reset the sensor.

Signed-off-by: Sergio Perez <sergio@...eznus.es>
---
 Documentation/devicetree/bindings/iio/light/bh1750.yaml | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/Documentation/devicetree/bindings/iio/light/bh1750.yaml b/Documentation/devicetree/bindings/iio/light/bh1750.yaml
index 1a88b3c253d5..f7a8dcd7d2a1 100644
--- a/Documentation/devicetree/bindings/iio/light/bh1750.yaml
+++ b/Documentation/devicetree/bindings/iio/light/bh1750.yaml
@@ -24,6 +24,10 @@ properties:
   reg:
     maxItems: 1
 
+  reset-gpios:
+    description: GPIO connected to the sensor's reset line (active low)
+    maxItems: 1
+
 required:
   - compatible
   - reg
@@ -39,6 +43,7 @@ examples:
       light-sensor@23 {
         compatible = "rohm,bh1750";
         reg = <0x23>;
+        reset-gpios = <&gpio2 17 0>;
       };
     };
 
-- 
2.43.0