drm/amd/display: Add MRQ programming for DCN42

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[Why]
DCN401 didn't have a MRQ present so these fields didn't exist.

They are still present on DCN42 so we need to continue programming
them like we did on DCN35 or we can block have poor meta requesting
efficiency which blocks p-state.

[How]
Add `hubp42_program_requestor` which takes DML21 input and programs
the registers like DCN35 and prior.

Reviewed-by: Leo Chen <leo.chen@amd.com>
Signed-off-by: Nicholas Kazlauskas <nicholas.kazlauskas@amd.com>
Signed-off-by: Roman Li <roman.li@amd.com>
Signed-off-by: Chuanyu Tseng <Chuanyu.Tseng@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

...

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Nicholas Kazlauskas 2026-03-02 15:02:33 -05:00 • committed by Alex Deucher

parent 31ea7b0ef3

commit 24ccc041f0

2 changed files with 40 additions and 1 deletions

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35

drivers/gpu/drm/amd/display/dc/hubp/dcn42/dcn42_hubp.c

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6

drivers/gpu/drm/amd/display/dc/hubp/dcn42/dcn42_hubp.h

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