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drm/amd/display: Add debug option for replay ESD recovery

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[Why&How]
Add a new debug option "enable_replay_esd_recovery" to control whether
to enable the replay ESD recovery feature.

Reviewed-by: Robin Chen <robin.chen@amd.com>
Reviewed-by: Wenjing Liu <wenjing.liu@amd.com>
Signed-off-by: Wei-Guang Li <wei-guang.li@amd.com>
Signed-off-by: Ivan Lipski <ivan.lipski@amd.com>
Tested-by: Dan Wheeler <daniel.wheeler@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Wei-Guang Li 2026-05-06 20:32:33 +08:00 committed by Alex Deucher
parent 3bfb08576c
commit 775054e27e
2 changed files with 9 additions and 6 deletions
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1
drivers/gpu/drm/amd/display/dc/dc.h
View File

@ -1220,6 +1220,7 @@ struct dc_debug_options {
bool enable_otg_frame_sync_pwa;
unsigned int min_deep_sleep_dcfclk_khz;
unsigned int force_odm2to1_for_edp_pixclk_mhz;
bool enable_replay_esd_recovery;
};

14
drivers/gpu/drm/amd/display/dc/link/protocols/link_dp_irq_handler.c
View File

@ -312,12 +312,14 @@ static void handle_hpd_irq_replay_sink(struct dc_link *link, bool *need_re_enabl
}
}
if (!link->replay_settings.replay_allow_active &&
replay_sink_status.bits.SINK_DEVICE_REPLAY_STATUS == 0x7) {
/* If sink device replay status is 0x7 and replay is disabled,
* it means sink is in a bad state and link retraining is needed to recover
*/
*replay_esd_detection_needed = true;
if (link->ctx->dc->debug.enable_replay_esd_recovery) {
if (!link->replay_settings.replay_allow_active &&
replay_sink_status.bits.SINK_DEVICE_REPLAY_STATUS == 0x7) {
/* If sink device replay status is 0x7 and replay is disabled,
* it means sink is in a bad state and link retraining is needed to recover
*/
*replay_esd_detection_needed = true;
}
}
}