Re: [PATCH v2 0/3] DCMI bridge support

From: Sakari Ailus
Date: Thu Jun 20 2019 - 12:17:30 EST


Hi Hugues,

On Tue, Jun 11, 2019 at 10:48:29AM +0200, Hugues Fruchet wrote:
> This patch serie allows to connect non-parallel camera sensor to
> DCMI thanks to a bridge connected in between such as STMIPID02 [1].
>
> Media controller support is introduced first, then support of
> several sub-devices within pipeline with dynamic linking
> between them.
> In order to keep backward compatibility with applications
> relying on V4L2 interface only, format set on video node
> is propagated to all sub-devices connected to camera interface.
>
> [1] https://www.spinics.net/lists/devicetree/msg278002.html

General notes on the set, not related to any single patch:

- Where's the sub-device representing the bridge itself?

- As the driver becomes MC-centric, crop configuration takes place through
V4L2 sub-device interface, not through the video device node.

- Same goes for accessing sensor configuration: it does not take place
through video node but through the sub-device nodes.

--
Kind regards,

Sakari Ailus
sakari.ailus@xxxxxxxxxxxxxxx