drm/amd/display: Don't share clk source between DP and HDMI

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[why]
Prevent clock source sharing between HDMI and DP connectors.
DP shouldn't be sharing its ref clock with phy clock,
which caused an issue of older ASICS booting up with multiple
diplays plugged in.

[how]
Add an extra check that would prevent HDMI and DP sharing clk.

Signed-off-by: Mikita Lipski <mikita.lipski@amd.com>
Reviewed-by: Hersen Wu <hersenxs.wu@amd.com>
Acked-by: Bhawanpreet Lakha <Bhawanpreet.Lakha@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Cc: stable@vger.kernel.org

...

This commit is contained in:

Mikita Lipski 2018-07-12 16:44:05 -04:00 • committed by Alex Deucher

parent 9315e2399a

commit 3e27e10e2e

4 changed files with 26 additions and 2 deletions

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22

drivers/gpu/drm/amd/display/dc/core/dc_resource.c

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1

drivers/gpu/drm/amd/display/dc/dc.h

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2

drivers/gpu/drm/amd/display/dc/dce100/dce100_resource.c

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3

drivers/gpu/drm/amd/display/dc/dce80/dce80_resource.c

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