Commit b6a65009 authored Feb 05, 2026 by Charlene Liu Committed by Alex Deucher Feb 19, 2026

drm/amd/display: Correct logic check error for fastboot



[Why]
Fix fastboot broken in driver.
This is caused by an open source backport change 7495962c.

from the comment, the intended check is to disable fastboot
for pre-DCN10. but the logic check is reversed, and causes
fastboot to be disabled on all DCN10 and after.

fastboot is for driver trying to pick up bios used hw setting
and bypass reprogramming the hw if dc_validate_boot_timing()
condition meets.

Fixes: 7495962c ("drm/amd/display: Disable fastboot on DCE 6 too")
Cc: stable@vger.kernel.org
Reviewed-by: Mario Limonciello <Mario.Limonciello@amd.com>
Reviewed-by: Ovidiu Bunea <ovidiu.bunea@amd.com>
Signed-off-by: Charlene Liu <Charlene.Liu@amd.com>
Signed-off-by: Ray Wu <ray.wu@amd.com>
Tested-by: Daniel Wheeler <daniel.wheeler@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

parent d1d51519

drivers/gpu/drm/amd/display/dc/hwss/dce110/dce110_hwseq.c

+2 −2

Original line number	Diff line number	Diff line
		@@ -1964,8 +1964,8 @@ void dce110_enable_accelerated_mode(struct dc dc, struct dc_state context)

		get_edp_streams(context, edp_streams, &edp_stream_num);

		/* Check fastboot support, disable on DCE 6-8 because of blank screens */
		if (edp_num && edp_stream_num && dc->ctx->dce_version < DCE_VERSION_10_0) {
		/* Check fastboot support, disable on DCE 6-8-10 because of blank screens */
		if (edp_num && edp_stream_num && dc->ctx->dce_version > DCE_VERSION_10_0) {
		for (i = 0; i < edp_num; i++) {
		edp_link = edp_links[i];
		if (edp_link != edp_streams[0]->link)