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Arm SCMI updates for v7.0

Browse source 
A set of cleanups, refactoring, and fixes to the Arm SCMI stack:
 
 1. Rework protocol version negotiation by moving version discovery and
    downgrade handling into the SCMI core and performing negotiation early,
    before protocol initialization. Remove legacy per-protocol versioning
    logic now made redundant by centralized SCMI handling.
 
 2. Increase the internal MAX_OPPS limit in the SCMI performance protocol
    to 64, allowing platforms with larger OPP tables to be fully supported.
 
 3. Reduce duplicated boilerplate in pinctrl and related protocols by
    consolidating validation and lookup logic in protocol get info helpers.
 
 4. Refactor reset protocol domain handling by introducing a shared lookup
    helper, ensuring consistent validation and error reporting.
 
 5. Fix potential undefined behaviour by properly initializing pointers
    annotated with the __free attribute.
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Merge tag 'scmi-updates-7.0' of git://git.kernel.org/pub/scm/linux/kernel/git/sudeep.holla/linux into soc/drivers

Arm SCMI updates for v7.0

A set of cleanups, refactoring, and fixes to the Arm SCMI stack:

1. Rework protocol version negotiation by moving version discovery and
   downgrade handling into the SCMI core and performing negotiation early,
   before protocol initialization. Remove legacy per-protocol versioning
   logic now made redundant by centralized SCMI handling.

2. Increase the internal MAX_OPPS limit in the SCMI performance protocol
   to 64, allowing platforms with larger OPP tables to be fully supported.

3. Reduce duplicated boilerplate in pinctrl and related protocols by
   consolidating validation and lookup logic in protocol get info helpers.

4. Refactor reset protocol domain handling by introducing a shared lookup
   helper, ensuring consistent validation and error reporting.

5. Fix potential undefined behaviour by properly initializing pointers
   annotated with the __free attribute.

* tag 'scmi-updates-7.0' of git://git.kernel.org/pub/scm/linux/kernel/git/sudeep.holla/linux:
  firmware: arm_scmi: Remove legacy protocol versioning logic
  firmware: arm_scmi: Rework protocol version negotiation logic
  firmware: arm_scmi: Increase performance MAX_OPPS limit to 64
  firmware: arm_scmi: Move boiler plate code into the get info functions
  firmware: arm_scmi: Refactor reset domain handling
  firmware: arm_scmi: Fix uninitialized pointers with __free attr

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
This commit is contained in:
Arnd Bergmann 2026-01-21 16:22:21 +01:00
commit 34f60ff256
17 changed files with 238 additions and 282 deletions
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