drm/amd/pm: derive stable PPT limits from PPTable

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GetPptLimit reports mutable PMFW runtime state. Using that value for
static capabilities causes two externally visible problems:

- A userspace override changes the default reported through hwmon.
- A firmware reset changes the advertised minimum or maximum range.

Derive platform defaults and supported ranges from the driver PPTable
for Sienna Cichlid, Navi10, Arcturus, and Aldebaran. Reserve PMFW queries
for the effective current limit.

Runtime policy can no longer redefine immutable platform capabilities.

Signed-off-by: Yang Wang <kevinyang.wang@amd.com>
Reviewed-by: Kenneth Feng <kenneth.feng@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

...

This commit is contained in:

Yang Wang 2026-07-30 09:50:40 +08:00 • committed by Alex Deucher

parent d95700604f

commit 25f4a46b0c

4 changed files with 53 additions and 40 deletions

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25

drivers/gpu/drm/amd/pm/swsmu/smu11/arcturus_ppt.c

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32

drivers/gpu/drm/amd/pm/swsmu/smu11/navi10_ppt.c

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28

drivers/gpu/drm/amd/pm/swsmu/smu11/sienna_cichlid_ppt.c

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8

drivers/gpu/drm/amd/pm/swsmu/smu13/aldebaran_ppt.c

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