drm/amdgpu: Use discovered mmhub inst_mask for v4_2_0

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mmhub v4_2_0 used adev->aid_mask as the mid_mask
when programming MMHUB instances. That assumption
is not valid for products with more AIDs than MIDs.

Track discovered MMHUB instances in mmhub.inst_mask
and use that mask for mmhub v4_2_0 programming paths.

Signed-off-by: Hawking Zhang <Hawking.Zhang@amd.com>
Reviewed-by: Le Ma <le.ma@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

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This commit is contained in:

Hawking Zhang 2026-07-03 12:25:22 +08:00 • committed by Alex Deucher

parent 71ad3f6d66

commit 1ad9d95665

5 changed files with 70 additions and 61 deletions

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11

drivers/gpu/drm/amd/amdgpu/amdgpu_discovery.c

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3

drivers/gpu/drm/amd/amdgpu/amdgpu_mmhub.h

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94

drivers/gpu/drm/amd/amdgpu/mmhub_v4_2_0.c

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24

drivers/gpu/drm/amd/amdgpu/soc_v1_0.c

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1

drivers/gpu/drm/amd/amdgpu/soc_v1_0.h

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