Commit 1db522cd authored by Alvin Lee's avatar Alvin Lee Committed by Alex Deucher
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drm/amd/display: Set WM set A to 0 if full pstate not supported 



[Why]
If full pstate is not supported, we should set WM set A
to 0 to prevent any hangs

[How]
If pstate is not supported, set watermark set A to 0

Signed-off-by: default avatarAlvin Lee <alvin.lee2@amd.com>
Acked-by: default avatarAurabindo Pillai <aurabindo.pillai@amd.com>
Signed-off-by: default avatarAlex Deucher <alexander.deucher@amd.com>
parent 39a71459

drivers/gpu/drm/amd/display/dc/dcn30/dcn30_resource.c

+1 −1
Original line number Diff line number Diff line
@@ -2313,7 +2313,7 @@ void dcn30_calculate_wm_and_dlg( 
		 * calculate DLG based on dummy p-state latency, and max out the set A p-state watermark

		 */

		context->bw_ctx.bw.dcn.watermarks.a = context->bw_ctx.bw.dcn.watermarks.c;

		context->bw_ctx.bw.dcn.watermarks.a.cstate_pstate.pstate_change_ns = 0x13FFFF;

		context->bw_ctx.bw.dcn.watermarks.a.cstate_pstate.pstate_change_ns = 0;

	} else {

		/* Set A:

		 * DCFCLK: Min Required