linux-kernel - [PATCH 1/3] dt-bindings: iio: proximity: Add YAML binding for RFD77402 ToF sensor

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Message-ID: <20251126031440.30065-2-raskar.shree97@gmail.com>
Date: Wed, 26 Nov 2025 08:44:38 +0530
From: Shrikant Raskar <raskar.shree97@...il.com>
To: jic23@...nel.org,
	robh@...nel.org,
	krzk+dt@...nel.org,
	conor+dt@...nel.org
Cc: dlechner@...libre.com,
	nuno.sa@...log.com,
	andy@...nel.org,
	heiko@...ech.de,
	neil.armstrong@...aro.org,
	skhan@...uxfoundation.org,
	david.hunter.linux@...il.com,
	linux-iio@...r.kernel.org,
	devicetree@...r.kernel.org,
	linux-kernel@...r.kernel.org,
	Shrikant Raskar <raskar.shree97@...il.com>
Subject: [PATCH 1/3] dt-bindings: iio: proximity: Add YAML binding for RFD77402 ToF sensor

The RFD77402 driver has existed without a formal device tree binding
description. With the recent addition of Device Tree support and
interrupt handling in the driver, it is now necessary to document
the DT properties used for configuring the device.

Since the binding introduces the compatible string "rfdigital,rfd77402",
the "rfdigital" vendor prefix is also added to vendor-prefixes.yaml.

Signed-off-by: Shrikant Raskar <raskar.shree97@...il.com>
---
 .../iio/proximity/rfdigital,rfd77402.yaml     | 55 +++++++++++++++++++
 .../devicetree/bindings/vendor-prefixes.yaml  |  2 +
 2 files changed, 57 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/iio/proximity/rfdigital,rfd77402.yaml

diff --git a/Documentation/devicetree/bindings/iio/proximity/rfdigital,rfd77402.yaml b/Documentation/devicetree/bindings/iio/proximity/rfdigital,rfd77402.yaml
new file mode 100644
index 000000000000..93deaa4e8b7a
--- /dev/null
+++ b/Documentation/devicetree/bindings/iio/proximity/rfdigital,rfd77402.yaml
@@ -0,0 +1,55 @@
+# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/iio/proximity/rfdigital,rfd77402.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: RF Digital RFD77402 ToF sensor
+
+maintainers:
+  - Shrikant Raskar <raskar.shree97@...il.com>
+
+description: |
+  The RF Digital RFD77402 is a Time-of-Flight (ToF) proximity and distance
+  sensor providing up to 200 mm range measurement over an I2C interface.
+
+properties:
+  compatible:
+    const: rfdigital,rfd77402
+
+  reg:
+    maxItems: 1
+
+  interrupts:
+    maxItems: 1
+    description: |
+      Generated by the device to announce that a new
+      measurement data is ready in result register.
+
+  vdd-supply:
+    description: Regulator that provides power to the sensor
+
+  vddio-supply:
+    description: Regulator providing I/O interface voltage
+
+required:
+  - compatible
+  - reg
+
+additionalProperties: false
+
+examples:
+  - |
+    #include <dt-bindings/interrupt-controller/irq.h>
+    i2c {
+        #address-cells = <1>;
+        #size-cells = <0>;
+
+        proximity@4c {
+            compatible = "rfdigital,rfd77402";
+            reg = <0x4c>;
+            interrupt-parent = <&gpio>;
+            interrupts = <4 IRQ_TYPE_EDGE_FALLING>;
+        };
+    };
+...
diff --git a/Documentation/devicetree/bindings/vendor-prefixes.yaml b/Documentation/devicetree/bindings/vendor-prefixes.yaml
index f1d1882009ba..a2e113e29e37 100644
--- a/Documentation/devicetree/bindings/vendor-prefixes.yaml
+++ b/Documentation/devicetree/bindings/vendor-prefixes.yaml
@@ -1341,6 +1341,8 @@ patternProperties:
     description: Revolution Robotics, Inc. (Revotics)
   "^rex,.*":
     description: iMX6 Rex Project
+  "^rfdigital,.*":
+    description: RF Digital Corporation
   "^richtek,.*":
     description: Richtek Technology Corporation
   "^ricoh,.*":
-- 
2.43.0