Re: [PATCH 05/14] media: qcom: camss: csid-gen3: Enable RDI SOF driving

[Gjorgji Rosikopulos (Consultant)]

On 10/29/2026 5:49 PM, Bryan O'Donoghue wrote:
> On 29/10/2026 15:46, Loic Poulain wrote:
>>> Is this something that should also be tied to frame_sync_en?
>>>
>>> Also, just thinking out loud, are there cases where we'd want to
>>> toggle this dynamically at runtime based on any V4L2 configuration or
>>> pipeline path? For example, should it be enabled for the pixel path
>>> but disabled for RDI?
>> Obviously, if userspace subscribes to the related framesync event, we
>> should enable it regardless.
> 
> That's the behaviour already :)
> 
> Again though we want SOF so that we can drive seqno which really 
> _should_ come from the CSID signal not from buf_done() *

My opinion is if userspace does not need on SOF events, the buffer
sequence may not be  important. However, for use cases that require
bundling and matching frames from different outputs such as DOL,
it makes sense to tag them with the same sequence number.

Therefore, if this feature is enabled/disabled if userspace
subscribes to the frame sync event, this behavior should be clearly
documented.

~Gjorgji

> 
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> bod