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drm/amd: Disable PSR-SU on Parade 0803 TCON

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A number of users have reported that there are random hangs occurring
caused by PSR-SU specifically on panels that contain the parade 0803
TCON.  Users have been able to work around the issue by disabling PSR
entirely.

To avoid these hangs, disable PSR-SU when this TCON is found.

Cc: stable@vger.kernel.org
Cc: Sean Wang <sean.ns.wang@amd.com>
Cc: Marc Rossi <Marc.Rossi@amd.com>
Cc: Hamza Mahfooz <Hamza.Mahfooz@amd.com>
Suggested-by: Tsung-hua (Ryan) Lin <Tsung-hua.Lin@amd.com>
Link: https://gitlab.freedesktop.org/drm/amd/-/issues/2443
Signed-off-by: Mario Limonciello <mario.limonciello@amd.com>
Reviewed-by: Hamza Mahfooz <hamza.mahfooz@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Mario Limonciello 2023-06-19 15:04:24 -05:00 committed by Alex Deucher
parent fc133acc43
commit 072030b178
1 changed files with 2 additions and 0 deletions
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2
drivers/gpu/drm/amd/display/modules/power/power_helpers.c
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@ -839,6 +839,8 @@ bool is_psr_su_specific_panel(struct dc_link *link)
((dpcd_caps->sink_dev_id_str[1] == 0x08 && dpcd_caps->sink_dev_id_str[0] == 0x08) ||
(dpcd_caps->sink_dev_id_str[1] == 0x08 && dpcd_caps->sink_dev_id_str[0] == 0x07)))
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->psr_info.force_psrsu_cap == 0x1)
isPSRSUSupported = true;
}