linux-kernel - [PATCH v3 02/19] dt-bindings: media: i2c: max96717: add support for I2C ATR

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Message-ID: <20250512212832.3674722-3-demonsingur@gmail.com>
Date: Tue, 13 May 2025 00:28:11 +0300
From: Cosmin Tanislav <demonsingur@...il.com>
To: 
Cc: 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>,
	Niklas Söderlund <niklas.soderlund@...natech.se>,
	Julien Massot <julien.massot@...labora.com>,
	Catalin Marinas <catalin.marinas@....com>,
	Will Deacon <will@...nel.org>,
	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	Liam Girdwood <lgirdwood@...il.com>,
	Mark Brown <broonie@...nel.org>,
	Linus Walleij <linus.walleij@...aro.org>,
	Bartosz Golaszewski <brgl@...ev.pl>,
	Bjorn Andersson <andersson@...nel.org>,
	Geert Uytterhoeven <geert+renesas@...der.be>,
	Dmitry Baryshkov <dmitry.baryshkov@...aro.org>,
	Vignesh Raghavendra <vigneshr@...com>,
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	Taniya Das <quic_tdas@...cinc.com>,
	Liu Ying <victor.liu@....com>,
	Ross Burton <ross.burton@....com>,
	Elinor Montmasson <elinor.montmasson@...oirfairelinux.com>,
	Eric Biggers <ebiggers@...gle.com>,
	Hans Verkuil <hverkuil@...all.nl>,
	Sakari Ailus <sakari.ailus@...ux.intel.com>,
	AngeloGioacchino Del Regno <angelogioacchino.delregno@...labora.com>,
	Zhi Mao <zhi.mao@...iatek.com>,
	Dongcheng Yan <dongcheng.yan@...el.com>,
	Benjamin Mugnier <benjamin.mugnier@...s.st.com>,
	Kieran Bingham <kieran.bingham@...asonboard.com>,
	Tommaso Merciai <tomm.merciai@...il.com>,
	Dan Carpenter <dan.carpenter@...aro.org>,
	Ricardo Ribalda <ribalda@...omium.org>,
	Laurentiu Palcu <laurentiu.palcu@....nxp.com>,
	linux-media@...r.kernel.org,
	devicetree@...r.kernel.org,
	linux-kernel@...r.kernel.org,
	linux-arm-kernel@...ts.infradead.org,
	linux-staging@...ts.linux.dev,
	linux-gpio@...r.kernel.org,
	Cosmin Tanislav <demonsingur@...il.com>
Subject: [PATCH v3 02/19] 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 15ab37702a92..167c3dd50683 100644
--- a/Documentation/devicetree/bindings/media/i2c/maxim,max96717.yaml
+++ b/Documentation/devicetree/bindings/media/i2c/maxim,max96717.yaml
@@ -92,6 +92,30 @@ 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
@@ -99,6 +123,21 @@ 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>
-- 
2.49.0