On 2024-02-05 16:12, Mario Limonciello wrote:

Stuart Hayhurst has found that both at bootup and fullscreen VA-API video is leading to black screens for around 1 second and kernel WARNING [1] traces when calling dmub_psr_enable() with Parade 08-01 TCON.

These symptoms all go away with PSR-SU disabled for this TCON, so disable it for now while DMUB traces [2] from the failure can be analyzed and the failure state properly root caused.

Cc: stable@vger.kernel.org Cc: Marc Rossi Marc.Rossi@amd.com Cc: Hamza Mahfooz Hamza.Mahfooz@amd.com Link: https://gitlab.freedesktop.org/drm/amd/uploads/a832dd515b571ee171b3e3b566e99... [1] Link: https://gitlab.freedesktop.org/drm/amd/uploads/8f13ff3b00963c833e23e68aa8116... [2] Closes: https://gitlab.freedesktop.org/drm/amd/-/issues/2645 Signed-off-by: Mario Limonciello mario.limonciello@amd.com

Reviewed-by: Leo Li sunpeng.li@amd.com

Thanks

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---

drivers/gpu/drm/amd/display/modules/power/power_helpers.c | 2 ++ 1 file changed, 2 insertions(+)

diff --git a/drivers/gpu/drm/amd/display/modules/power/power_helpers.c b/drivers/gpu/drm/amd/display/modules/power/power_helpers.c index e304e8435fb8..477289846a0a 100644 --- a/drivers/gpu/drm/amd/display/modules/power/power_helpers.c +++ b/drivers/gpu/drm/amd/display/modules/power/power_helpers.c @@ -841,6 +841,8 @@ bool is_psr_su_specific_panel(struct dc_link *link) isPSRSUSupported = false; else if (dpcd_caps->sink_dev_id_str[1] == 0x08 && dpcd_caps->sink_dev_id_str[0] == 0x03) isPSRSUSupported = false;

• 	else if (dpcd_caps->sink_dev_id_str[1] == 0x08 && dpcd_caps->sink_dev_id_str[0] == 0x01)
  

• 		isPSRSUSupported = false;
  else if (dpcd_caps->psr_info.force_psrsu_cap == 0x1)
  	isPSRSUSupported = true;
  

  }