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media: dt-bindings: adv7180: Introduce 'adv,force-bt656-4' property

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Captured NTSC video would be out of sync when using the adv7280 with
the BT.656-4 protocol. Certain registers (0x04, 0x31, 0xE6) need to
be configured properly to ensure BT.656-4 compatibility.

Introduce the 'adv,force-bt656-4' property to allow the ADV7280
behavior to be consistent with the ADV7180, where BT.656-4 timing
is used by default.

Signed-off-by: Fabio Estevam <festevam@gmail.com>
Acked-by: Rob Herring <robh@kernel.org>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
This commit is contained in:
Fabio Estevam 2021-06-04 23:22:16 +02:00 committed by Mauro Carvalho Chehab
parent f7b96a9f35
commit 28d1e47694
1 changed files with 5 additions and 0 deletions
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5
Documentation/devicetree/bindings/media/i2c/adv7180.yaml
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@ -38,6 +38,11 @@ properties:
reset-gpios:
maxItems: 1
adv,force-bt656-4:
description:
Indicates that the output is a BT.656-4 compatible stream.
type: boolean
port:
$ref: /schemas/graph.yaml#/$defs/port-base
unevaluatedProperties: false