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Commit ff587987 authored by Hugo Hu's avatar Hugo Hu Committed by Alex Deucher
Browse files

drm/amd/display: Patch for extend time to panel poweron. 



[WHY]
In eDP spec, the min duration in LCDVDD on-off-on sequence should be
500ms, some BOE panels need 700ms to pass.
[HOW]
Add patch to wait more time when eDP power on.

Signed-off-by: default avatarHugo Hu <hugo.hu@amd.com>
Reviewed-by: default avatarCharlene Liu <Charlene.Liu@amd.com>
Acked-by: default avatarHarry Wentland <harry.wentland@amd.com>
Signed-off-by: default avatarAlex Deucher <alexander.deucher@amd.com>
parent 39a9f4d8

drivers/gpu/drm/amd/display/dc/dc_types.h

+1 −0
Original line number Diff line number Diff line
@@ -192,6 +192,7 @@ union display_content_support { 


struct dc_panel_patch {

	unsigned int dppowerup_delay;

	unsigned int extra_t12_ms;

};



struct dc_edid_caps {

drivers/gpu/drm/amd/display/dc/dce110/dce110_hw_sequencer.c

+6 −3
Original line number Diff line number Diff line
@@ -871,10 +871,13 @@ void hwss_edp_power_control( 
			unsigned long long wait_time_ms = 0;



			/* max 500ms from LCDVDD off to on */

			unsigned long long edp_poweroff_time_ms =

					500 + link->local_sink->edid_caps.panel_patch.extra_t12_ms;



			if (link->link_trace.time_stamp.edp_poweroff == 0)

				wait_time_ms = 500;

			else if (duration_in_ms < 500)

				wait_time_ms = 500 - duration_in_ms;

				wait_time_ms = edp_poweroff_time_ms;

			else if (duration_in_ms < edp_poweroff_time_ms)

				wait_time_ms = edp_poweroff_time_ms - duration_in_ms;



			if (wait_time_ms) {

				msleep(wait_time_ms);