linux-kernel - [PATCH v8 02/21] dt-bindings: media: i2c: max96717: add support for I2C ATR

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Message-Id: <20251114-gmsl2-3_serdes-v8-2-47499d907990@analog.com>
Date: Fri, 14 Nov 2025 16:51:42 +0200
From: Dumitru Ceclan via B4 Relay <devnull+dumitru.ceclan.analog.com@...nel.org>
To: Tomi Valkeinen <tomi.valkeinen+renesas@...asonboard.com>, 
 Mauro Carvalho Chehab <mchehab@...nel.org>, 
 Sakari Ailus <sakari.ailus@...ux.intel.com>, 
 Laurent Pinchart <laurent.pinchart@...asonboard.com>, 
 Julien Massot <julien.massot@...labora.com>, Rob Herring <robh@...nel.org>, 
 Niklas Söderlund <niklas.soderlund@...natech.se>, 
 Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Cc: linux-media@...r.kernel.org, linux-kernel@...r.kernel.org, 
 devicetree@...r.kernel.org, linux-gpio@...r.kernel.org, 
 linux-staging@...ts.linux.dev, linux-gpio@...r.kernel.org, 
 Cosmin Tanislav <demonsingur@...il.com>
Subject: [PATCH v8 02/21] dt-bindings: media: i2c: max96717: add support
 for I2C ATR

From: Cosmin Tanislav <demonsingur@...il.com>

MAX96717 is capable of address translation for the connected I2C slaves.

Add support for I2C ATR while keeping I2C gate for compatibility to
support this usecase.

Signed-off-by: Cosmin Tanislav <demonsingur@...il.com>
Acked-by: Rob Herring (Arm) <robh@...nel.org>
---
 .../bindings/media/i2c/maxim,max96717.yaml         | 39 ++++++++++++++++++++++
 1 file changed, 39 insertions(+)

diff --git a/Documentation/devicetree/bindings/media/i2c/maxim,max96717.yaml b/Documentation/devicetree/bindings/media/i2c/maxim,max96717.yaml
index d1e8ba6e368e..976f6dd2c164 100644
--- a/Documentation/devicetree/bindings/media/i2c/maxim,max96717.yaml
+++ b/Documentation/devicetree/bindings/media/i2c/maxim,max96717.yaml
@@ -91,6 +91,30 @@ properties:
       incoming GMSL2 link. Therefore, it supports an i2c-gate
       subnode to configure a sensor.
 
+  i2c-alias-pool:
+    maxItems: 2
+
+  i2c-atr:
+    type: object
+    additionalProperties: false
+
+    properties:
+      '#address-cells':
+        const: 1
+
+      '#size-cells':
+        const: 0
+
+    patternProperties:
+      '^i2c@[01]$':
+        $ref: /schemas/i2c/i2c-controller.yaml#
+        unevaluatedProperties: false
+        properties:
+          reg:
+            items:
+              minimum: 0
+              maximum: 1
+
 required:
   - compatible
   - reg
@@ -98,6 +122,21 @@ required:
 
 additionalProperties: false
 
+allOf:
+  - $ref: /schemas/i2c/i2c-atr.yaml#
+
+  - anyOf:
+      - oneOf:
+          - required: [i2c-atr]
+          - required: [i2c-gate]
+
+      - not:
+          required: [i2c-atr, i2c-gate]
+
+dependentRequired:
+  i2c-atr: [i2c-alias-pool]
+  i2c-alias-pool: [i2c-atr]
+
 examples:
   - |
     #include <dt-bindings/gpio/gpio.h>

-- 
2.43.0