drm/amd/display: disable DPP RCG before DPP CLK enable

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[ Upstream commit 1bcd679209 ]

[why]
DPP CLK enable needs to disable DPPCLK RCG first.
The DPPCLK_en in dccg should always be enabled when the corresponding
pipe is enabled.

Reviewed-by: Hansen Dsouza <hansen.dsouza@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>
Stable-dep-of: cfa0904a35 ("drm/amd/display: Prevent Gating DTBCLK before It Is Properly Latched")
Signed-off-by: Sasha Levin <sashal@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

...

This commit is contained in:

Charlene Liu 2025-11-25 09:51:29 -05:00 • committed by Greg Kroah-Hartman

parent 467904aabb

commit b1515304a5

2 changed files with 38 additions and 21 deletions

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38

drivers/gpu/drm/amd/display/dc/dccg/dcn35/dcn35_dccg.c

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21

drivers/gpu/drm/amd/display/dc/hwss/dcn35/dcn35_hwseq.c

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