drm/amd/display: fix hotplug during display off

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[why]
HPD is not suppressed when we lower
clocks on renoir. B/c of this we do link
training when the 48mhz refclk is off, which
will cause ASIC hang.

[how]
Exit optimized power state for detection purpose.

Signed-off-by: Joseph Gravenor <joseph.gravenor@amd.com>
Reviewed-by: Eric Yang <eric.yang2@amd.com>
Acked-by: Bhawanpreet Lakha <Bhawanpreet.Lakha@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

...

This commit is contained in:

Joseph Gravenor 2019-09-04 12:43:05 -04:00 • committed by Alex Deucher

parent 8b8eda0144

commit 9ae1b27f31

7 changed files with 119 additions and 16 deletions

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80

drivers/gpu/drm/amd/display/dc/clk_mgr/dcn21/rn_clk_mgr.c

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1

drivers/gpu/drm/amd/display/dc/clk_mgr/dcn21/rn_clk_mgr.h

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15

drivers/gpu/drm/amd/display/dc/clk_mgr/dcn21/rn_clk_mgr_vbios_smu.c

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2

drivers/gpu/drm/amd/display/dc/clk_mgr/dcn21/rn_clk_mgr_vbios_smu.h

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21

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

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7

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

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7

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

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