drm/amd/display: Use DTBCLK as refclk instead of DPREFCLK

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[ Upstream commit 4a30cc2bd2 ]

[Why]
Flash of corruption observed when UCLK switching after transitioning
from DTBCLK to DPREFCLK on subVP(DP) + subVP(HDMI) config
Scenario where DPREFCLK is required instead of DTBCLK is not expected

[How]
Always set the DTBCLK source as DTBCLK0

Reviewed-by: Alvin Lee <alvin.lee2@amd.com>
Acked-by: Tom Chung <chiahsuan.chung@amd.com>
Signed-off-by: Austin Zheng <austin.zheng@amd.com>
Tested-by: Daniel Wheeler <daniel.wheeler@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>

...

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Austin Zheng 2023-07-26 10:40:48 -04:00 • committed by Greg Kroah-Hartman

parent 2d027da82a

commit 506d2ee72a

1 changed files with 2 additions and 1 deletions

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drivers/gpu/drm/amd/display/dc/dcn32/dcn32_dccg.c

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