[Intel-gfx] [PATCH] drm/drm_mst: Use Extended Base Receiver Capability DPCD space

[why] DP 1.4a spec madates that if DP_EXTENDED_RECEIVER_CAP_FIELD_PRESENT is set, Extended Base Receiver Capability DPCD space must be used. Without doing that, the three DPCD values that differ will be wrong, leading to incorrect or limited functionality. MST link rate, for example, could have a

[Intel-gfx] [PATCH] drm/drm_mst: Use Extended Base Receiver Capability DPCD space

[why] DP 1.4a spec madates that if DP_EXTENDED_RECEIVER_CAP_FIELD_PRESENT is set, Extended Base Receiver Capability DPCD space must be used. Without doing that, the three DPCD values that differ will be wrong, leading to incorrect or limited functionality. MST link rate, for example, could have a

Re: [Intel-gfx] [PATCH] drm/drm_mst: Use Extended Base Receiver Capability DPCD space

[AMD Official Use Only - Internal Distribution Only] Hi, drm/radeon/ part is still WIP (i.e. I doubt it'll work as is), but drm/i915 and drm/nouveau/ should be OK. Would it be possible to test those while I'm figuring out drm/radeon/ settings? I'm pretty sure the follow-up change would affect

[Intel-gfx] [PATCH] drm/drm_mst: Use Extended Base Receiver Capability DPCD space

[why] DP 1.4a spec madates that if DP_EXTENDED_RECEIVER_CAP_FIELD_PRESENT is set, Extended Base Receiver Capability DPCD space must be used. Without doing that, the three DPCD values that differ will be wrong, leading to incorrect or limited functionality. MST link rate, for example, could have a