On 2/27/2026 6:46 PM, Jerome Tollet wrote:
Hi Ankit, Ville,
Gentle ping on this patch series. As confirmed in my previous testing
(Feb 21), the SCDC polling patch works perfectly on kernel 6.19.2 with
my Alder Lake-N (N100) + Cisco Desk Pro (CS-DESKPRO-2) setup.
As mentioned in [1], to me polling for TMDS scramble status makes sense.
Perhaps the best way would have been to work with `SCDC Read Request`
implemented, where in the sink notifies the source to check the SCDC
status flags, where we have bit for Scrambling_Status.
However we do not have that support. Also not all panels support this.
Since I have also contributed to the patch, I cannot review the change here.
Ville, do you think this change makes sense?
PS: I was trying my hands on SCDC RR sometime back but didnt go through. [2]
[1]
https://lore.kernel.org/intel-xe/[email protected]/
[2] https://patchwork.freedesktop.org/series/101191/
Regards,
Ankit
The isolated testing showed that the SCDC polling approach alone
resolves the 4K@60Hz HDMI issue, which aligns with both the HDMI 2.0
spec requirements and Windows driver behavior.
Is there anything else needed from my side to help move this forward?
Thanks,
Jerome
