Commit 2387ccf4 authored by Nicholas Kazlauskas's avatar Nicholas Kazlauskas Committed by Alex Deucher
Browse files

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



[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: default avatarJosip Pavic <josip.pavic@amd.com>
Acked-by: default avatarAlan Liu <haoping.liu@amd.com>
Signed-off-by: default avatarNicholas Kazlauskas <nicholas.kazlauskas@amd.com>
Tested-by: default avatarDaniel Wheeler <daniel.wheeler@amd.com>
Signed-off-by: default avatarAlex Deucher <alexander.deucher@amd.com>
parent 2a9482e5

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

+5 −0
Original line number Diff line number Diff line
@@ -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++) {