drm/amd/display: Request PHYCLK adjustment on PHY enable/disable

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[Why]
Currently we don't explicitly send a request for a minimum PHYCLK, and
we hope that the dependencies other clocks have will raise PHYCLK when
needed.

[How]
- new clk_mgr function to keep track of PHYCLK requirements
- request maximum requirement across all links
- remove PHYCLK from clock state comparator, as it doesn't come from DML

Signed-off-by: Joshua Aberback <joshua.aberback@amd.com>
Reviewed-by: Jun Lei <Jun.Lei@amd.com>
Acked-by: Eryk Brol <eryk.brol@amd.com>
Acked-by: Rodrigo Siqueira <Rodrigo.Siqueira@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

...

This commit is contained in:

Joshua Aberback 2020-06-26 03:57:57 -04:00 • committed by Alex Deucher

parent d3d847d8f2

commit efc7d16538

6 changed files with 85 additions and 25 deletions

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35

drivers/gpu/drm/amd/display/dc/clk_mgr/dcn20/dcn20_clk_mgr.c

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27

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

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32

drivers/gpu/drm/amd/display/dc/clk_mgr/dcn30/dcn30_clk_mgr.c

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11

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

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3

drivers/gpu/drm/amd/display/dc/inc/hw/clk_mgr.h

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2

drivers/gpu/drm/amd/display/dc/inc/hw/clk_mgr_internal.h

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