Re: [PATCH RFC 0/5] media: Fault-Tolerant V4L2

From: Mattijs Korpershoek

Date: Fri Oct 23 2026 - 08:27:01 EST


Hi everyone,

On Thu, Oct 01, 2026 at 14:55, Mattijs Korpershoek <mkorpershoek@xxxxxxxxxx> wrote:

> On media-centric camera pipelines, every entity is known at boot time
> and described statically (for example via device-tree).
>
> The V4L2 framework assumes that every entity of the camera
> pipeline is always present. This is a reasonable assumption for
> integrated cameras in laptops or phones. However, in automotive systems,
> cameras (e.g. rear-view or surround-view) can be damaged or disconnected.
> When the framework assumes all sensors are present, a single missing
> camera can prevent the entire pipeline from operating.

This series has been discussed at the Camera & ISP "unconference" in
Pragues (during Linux Plumbers)

The notes can be found here:
https://lore.kernel.org/linux-media/20261021224119.GA383235@xxxxxxxxxxxxxxxxxxxxxxxxxx/T/#u

I intend to rework V2 based on the feedback I've received on the list
and at the "unconference".

I'll try to reuse Sakari's work on media graph events from:
https://git.linuxtv.org/sailus/media_tree.git/log/?h=partial-reg

Thanks again for the feedback I've received so far.

Regards
Mattijs