linux-kernel - [RFC PATCH 03/24] dt-bindings: media: i2c: max96717: add support for I2C ATR

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Message-ID: <20250308183410.3013996-4-demonsingur@gmail.com>
Date: Sat,  8 Mar 2025 20:33:32 +0200
From: Cosmin Tanislav <demonsingur@...il.com>
To: 
Cc: Tomi Valkeinen <tomi.valkeinen@...asonboard.com>,
	Niklas Söderlund <niklas.soderlund@...natech.se>,
	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>,
	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 <quic_bjorande@...cinc.com>,
	Geert Uytterhoeven <geert+renesas@...der.be>,
	Dmitry Baryshkov <dmitry.baryshkov@...aro.org>,
	Heiko Stuebner <heiko@...ech.de>,
	Biju Das <biju.das.jz@...renesas.com>,
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	Nícolas F . R . A . Prado <nfraprado@...labora.com>,
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	Laurent Pinchart <laurent.pinchart@...asonboard.com>,
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	Zhi Mao <zhi.mao@...iatek.com>,
	Kieran Bingham <kieran.bingham@...asonboard.com>,
	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>,
	Ricardo Ribalda <ribalda@...omium.org>,
	Ihor Matushchak <ihor.matushchak@...box.net>,
	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: [RFC PATCH 03/24] 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    | 34 ++++++++++++++-----
 1 file changed, 26 insertions(+), 8 deletions(-)

diff --git a/Documentation/devicetree/bindings/media/i2c/maxim,max96717.yaml b/Documentation/devicetree/bindings/media/i2c/maxim,max96717.yaml
index 1026678a17a7..7d77cc9dcd96 100644
--- a/Documentation/devicetree/bindings/media/i2c/maxim,max96717.yaml
+++ b/Documentation/devicetree/bindings/media/i2c/maxim,max96717.yaml
@@ -83,14 +83,6 @@ properties:
     required:
       - port@1
 
-  i2c-gate:
-    $ref: /schemas/i2c/i2c-gate.yaml
-    unevaluatedProperties: false
-    description:
-      The MAX96717 will forward the I2C requests from the
-      incoming GMSL2 link. Therefore, it supports an i2c-gate
-      subnode to configure a sensor.
-
 required:
   - compatible
   - reg
@@ -98,6 +90,32 @@ required:
 
 additionalProperties: false
 
+allOf:
+  - $ref: /schemas/i2c/i2c-atr.yaml#
+
+  - oneOf:
+      - properties:
+          i2c-gate:
+            $ref: /schemas/i2c/i2c-gate.yaml
+            unevaluatedProperties: false
+            description:
+              The MAX96717 will forward the I2C requests from the
+              incoming GMSL2 link. Therefore, it supports an i2c-gate
+              subnode to configure a sensor.
+
+      - properties:
+          i2c-alias-pool:
+            maxItems: 2
+
+          i2c-atr:
+            patternProperties:
+              '^i2c@0':
+                $ref: /schemas/i2c/i2c-controller.yaml#
+                properties:
+                  reg:
+                    items:
+                      max: 0
+
 examples:
   - |
     #include <dt-bindings/gpio/gpio.h>
-- 
2.48.1