Re: Suggestion regarding x8 gang mode device tree changes

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On 10/29/20 7:50 AM, Sakari Ailus wrote:
Hi Sowjanya,

On Wed, Oct 28, 2020 at 06:48:59PM -0700, Sowjanya Komatineni wrote:
Hi Sakari,

Missed to add you to below patch series for HDMI2CSI bridge support

https://patchwork.kernel.org/project/linux-media/cover/1603768763-25590-1-git-send-email-skomatineni@xxxxxxxxxx/

Patch-10 of this series is for x8 capture from HDMI2CSI bridge.

Would like to get your suggestion on x8 gang/combined ports capture
implementation.
The majority of CSI-2 receiver devices support partitioning the lanes among
different PHYs in various ways. They do support usually up to four lanes,
but adding four more lanes is not a reason for making the API different.

So instead, you should implement this as a single port that simply has 8
lanes.

Thanks Sakari for your reply.

current v2 series treats as 8 lanes. You mean to not expose 2nd port in device tree as VI/CSI side takes care of 2nd port as combined to treat as 8 lane?

Thanks

Sowjanya




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