ACK: [PATCH 0/2][SRU][U/L/K/J] Fix Disable thunderbolt clx make edp-monitor garbage while moving the touchpad
Andrei Gherzan
andrei.gherzan at canonical.com
Tue Jun 6 12:36:20 UTC 2023
On 23/06/06 04:10PM, Koba Ko wrote:
> BugLink: https://bugs.launchpad.net/bugs/2023004
>
> [impact]
> The default sync pulse length for fast wake AUX transactions was changed from 18 to 10, which was causing issues with some eDP panels.
>
> [fix]
> Revert the sync pulse length for fast wake AUX transactions back to the hardware default of 18 (10 precharge + 8 preamble).
>
> [test cases]
> 1. configure with thunderbolt.clx=0.
> 2. check edp's behavior and it should work well and there's no garbage.
>
> [where the issue could happen]
> low, By reverting this setting back to the default, this commit restores stability for configurations using fast wake AUX transactions, especially those involving eDP panels that were incompatible with the shorter sync pulse length. The longer, hardware-default sync pulse length is compatible with more use
>
> Jouni Högander (1):
> drm/i915: Use 18 fast wake AUX sync len
>
> drivers/gpu/drm/i915/display/intel_dp_aux.c | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)
>
> --
> 2.34.1
Acked-by: Andrei Gherzan <andrei.gherzan at canonical.com>
--
Andrei Gherzan
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