[Bug 108503] Display flashes when PSR enabled on gen9

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=108503

--- Comment #7 from Jose Roberto de Souza <jose.souza at intel.com> ---
Okay no more retraining but DPCD are still failing =/

[   13.694862] [drm:intel_dp_hpd_pulse [i915]] got hpd irq on port A - short
[   13.695004] [drm:dc_link_handle_hpd_rx_irq [amdgpu]]
dc_link_handle_hpd_rx_irq: Got short pulse HPD on link 0
[   13.695586] [drm:intel_dp_read_dpcd [i915]] DPCD: 11 0a 84 41 00 00 01 80 02
00 00 00 0f 0b 00
[   13.738161] [drm:drm_dp_dpcd_access [drm_kms_helper]] Too many retries,
giving up. First error: -5
[   13.738209] [drm:dc_link_handle_hpd_rx_irq [amdgpu]]
dc_link_handle_hpd_rx_irq: DPCD read failed to obtain irq data
[   13.947377] [drm:dm_irq_work_func [amdgpu]] DM_IRQ: work_func: for dal_src=7
[   13.947443] [drm:gen8_de_irq_handler [i915]] hotplug event received, stat
0x01000000, dig 0x11101010, pins 0x00000010, long 0x00000000

Also looks like panel is lines are muxed with the discrete GPU I will look at
the implication of this.

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