linux-kernel - [RFC PATCH v2 03/16] dt-bindings: media: i2c: max96717: add support for I2C ATR

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Message-ID: <20250309084814.3114794-4-demonsingur@gmail.com>
Date: Sun,  9 Mar 2025 10:47:55 +0200
From: Cosmin Tanislav <demonsingur@...il.com>
To: 
Cc: Tomi Valkeinen <tomi.valkeinen@...asonboard.com>,
	Cosmin Tanislav <cosmin.tanislav@...log.com>,
	Mauro Carvalho Chehab <mchehab@...nel.org>,
	Rob Herring <robh@...nel.org>,
	Krzysztof Kozlowski <krzk+dt@...nel.org>,
	Conor Dooley <conor+dt@...nel.org>,
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	Dongcheng Yan <dongcheng.yan@...el.com>,
	AngeloGioacchino Del Regno <angelogioacchino.delregno@...labora.com>,
	Benjamin Mugnier <benjamin.mugnier@...s.st.com>,
	Tommaso Merciai <tomm.merciai@...il.com>,
	Dan Carpenter <dan.carpenter@...aro.org>,
	Ihor Matushchak <ihor.matushchak@...box.net>,
	Laurentiu Palcu <laurentiu.palcu@....nxp.com>,
	linux-media@...r.kernel.org,
	devicetree@...r.kernel.org,
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	linux-arm-kernel@...ts.infradead.org,
	linux-staging@...ts.linux.dev,
	linux-gpio@...r.kernel.org,
	Cosmin Tanislav <demonsingur@...il.com>
Subject: [RFC PATCH v2 03/16] dt-bindings: media: i2c: max96717: add support for I2C ATR

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>
---
 .../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 1026678a17a7..dd28cc397674 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@0':
+        $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>
-- 
2.48.1