drm/amd/display: Ensure link output is disabled in backend reset for PLL_ON

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[ Upstream commit 4589712e01 ]

[Why]
We're missing the code to actually disable the link output when we have
to leave the SYMCLK_ON but the TX remains OFF.

[How]
Port the code from DCN401 that detects SYMCLK_ON_TX_OFF and disable
the link output when the backend is reset.

Reviewed-by: Ovidiu (Ovi) Bunea <ovidiu.bunea@amd.com>
Signed-off-by: Nicholas Kazlauskas <nicholas.kazlauskas@amd.com>
Signed-off-by: Matthew Stewart <matthew.stewart2@amd.com>
Tested-by: Dan Wheeler <daniel.wheeler@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>

...

This commit is contained in:

Nicholas Kazlauskas 2026-01-06 11:11:19 -05:00 • committed by Sasha Levin

parent 5f0c5775d4

commit 1e89f8a2e8

1 changed files with 15 additions and 1 deletions

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drivers/gpu/drm/amd/display/dc/hwss/dcn31/dcn31_hwseq.c

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