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[17/19] media: dt-bindings: ti,ds90ub960: Add "i2c-addr" link property

Message ID 20250110-ub9xx-improvements-v1-17-e0b9a1f644da@ideasonboard.com (mailing list archive)
State New
Headers show
Series media: i2c: ds90ub9xx: Error handling, UB9702 improvements | expand

Commit Message

Tomi Valkeinen Jan. 10, 2025, 9:14 a.m. UTC 
From: Jai Luthra <jai.luthra@ideasonboard.com>

The serializer's I2C address on the FPD-Link bus is usually communicated
to the deserializer once the forward-channel is established. But in some
cases it might be necessary to program the serializer (over the
back-channel) before the forward-channel is established.

This can be used e.g. to correct serializer configuration which
otherwise would prevent the FC to be enabled.

Add a new optional property to specify the I2C address of the
serializer.

Signed-off-by: Jai Luthra <jai.luthra@ideasonboard.com>
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ideasonboard.com>
Cc: devicetree@vger.kernel.org
Cc: Rob Herring <robh@kernel.org>
Cc: Krzysztof Kozlowski <krzk+dt@kernel.org>
---
 Documentation/devicetree/bindings/media/i2c/ti,ds90ub960.yaml | 7 +++++++
 1 file changed, 7 insertions(+)
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Patch

diff --git a/Documentation/devicetree/bindings/media/i2c/ti,ds90ub960.yaml b/Documentation/devicetree/bindings/media/i2c/ti,ds90ub960.yaml
index 0b71e6f911a8..e17b508b6409 100644
--- a/Documentation/devicetree/bindings/media/i2c/ti,ds90ub960.yaml
+++ b/Documentation/devicetree/bindings/media/i2c/ti,ds90ub960.yaml
@@ -75,6 +75,13 @@  properties:
               address on the I2C bus where the deserializer resides are
               forwarded to the serializer.
 
+          i2c-addr:
+            $ref: /schemas/types.yaml#/definitions/uint32
+            description:
+              The strap I2C address of the serializer. This is used by the
+              deserializer to internally communicate to the serializer over the
+              FPD-Link back-channel.
+
           ti,rx-mode:
             $ref: /schemas/types.yaml#/definitions/uint32
             enum: