Minki/linux
1
0
Fork 1
mirror of https://github.com/torvalds/linux.git synced 2024-11-22 12:11:40 +00:00
Code Issues Packages Projects Releases Wiki Activity

drm/amd/display: Keep PHY active for DP displays on DCN31

Browse Source 
[Why & How]
Port of a change that went into DCN314 to keep the PHY enabled
when we have a connected and active DP display.

The PHY can hang if PHY refclk is disabled inadvertently.

Cc: Mario Limonciello <mario.limonciello@amd.com>
Cc: Alex Deucher <alexander.deucher@amd.com>
Cc: stable@vger.kernel.org
Reviewed-by: Josip Pavic <josip.pavic@amd.com>
Acked-by: Alan Liu <haoping.liu@amd.com>
Signed-off-by: Nicholas Kazlauskas <nicholas.kazlauskas@amd.com>
Tested-by: Daniel Wheeler <daniel.wheeler@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Nicholas Kazlauskas 2023-06-29 10:35:59 -04:00 committed by Alex Deucher
parent 2a9482e559
commit 2387ccf43e
1 changed files with 5 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

5
drivers/gpu/drm/amd/display/dc/clk_mgr/dcn31/dcn31_clk_mgr.c
View File

@ -87,6 +87,11 @@ static int dcn31_get_active_display_cnt_wa(
stream->signal == SIGNAL_TYPE_DVI_SINGLE_LINK ||
stream->signal == SIGNAL_TYPE_DVI_DUAL_LINK)
tmds_present = true;
/* Checking stream / link detection ensuring that PHY is active*/
if (dc_is_dp_signal(stream->signal) && !stream->dpms_off)
display_count++;
}
for (i = 0; i < dc->link_count; i++) {