drm/amd/display: Move setup_stream_attribute

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[ Upstream commit 2681bf4ae8 ]

[WHY]
If symclk RCO is enabled, stream encoder may not be receiving an ungated
clock by the time we attempt to set stream attributes when setting dpms
on. Since the clock is gated, register writes to the stream encoder fail.

[HOW]
Move set_stream_attribute call into enable_stream, just after the point
where symclk32_se is ungated.
Logically there is no need to set stream attributes as early as is
currently done in link_set_dpms_on, so this should have no impact beyond
the RCO fix.

Reviewed-by: Ovidiu (Ovi) Bunea <ovidiu.bunea@amd.com>
Signed-off-by: Michael Strauss <michael.strauss@amd.com>
Signed-off-by: Ivan Lipski <ivan.lipski@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>

...

This commit is contained in:

Michael Strauss 2025-02-12 14:08:08 -05:00 • committed by Greg Kroah-Hartman

parent 8f5936356a

commit 7965cb3606

5 changed files with 12 additions and 3 deletions

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1

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

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2

drivers/gpu/drm/amd/display/dc/hwss/dcn20/dcn20_hwseq.c

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2

drivers/gpu/drm/amd/display/dc/hwss/dcn401/dcn401_hwseq.c

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3

drivers/gpu/drm/amd/display/dc/link/link_dpms.c

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7

drivers/gpu/drm/amd/display/dc/virtual/virtual_stream_encoder.c

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