Re: [PATCH 10/11] drm/i915/dp_mst: Make HBLANK expansion quirk work for logical ports

2024-03-27 Thread Nautiyal, Ankit K
On 3/27/2024 7:49 PM, Imre Deak wrote: On Wed, Mar 27, 2024 at 01:40:58PM +0530, Nautiyal, Ankit K wrote: On 3/21/2024 1:41 AM, Imre Deak wrote: The DPCD OUI of the logical port on a Dell UHBR monitor - on which the AUX device is used to enable DSC - is all 0. To detect if the HBLANK

Re: [PATCH 10/11] drm/i915/dp_mst: Make HBLANK expansion quirk work for logical ports

2024-03-27 Thread Imre Deak
On Wed, Mar 27, 2024 at 01:40:58PM +0530, Nautiyal, Ankit K wrote: > > On 3/21/2024 1:41 AM, Imre Deak wrote: > > The DPCD OUI of the logical port on a Dell UHBR monitor - on which the > > AUX device is used to enable DSC - is all 0. To detect if the HBLANK > > expansion quirk is required for

Re: [PATCH 10/11] drm/i915/dp_mst: Make HBLANK expansion quirk work for logical ports

2024-03-27 Thread Nautiyal, Ankit K
On 3/21/2024 1:41 AM, Imre Deak wrote: The DPCD OUI of the logical port on a Dell UHBR monitor - on which the AUX device is used to enable DSC - is all 0. To detect if the HBLANK expansion quirk is required for this monitor use the OUI of the port's parent instead. Since in the above case the

[PATCH 10/11] drm/i915/dp_mst: Make HBLANK expansion quirk work for logical ports

2024-03-20 Thread Imre Deak
The DPCD OUI of the logical port on a Dell UHBR monitor - on which the AUX device is used to enable DSC - is all 0. To detect if the HBLANK expansion quirk is required for this monitor use the OUI of the port's parent instead. Since in the above case the DPCD of both the logical port and the