intel_idle: add Sierra Forest SoC support

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Add Sierra Forest SoC C-states, which are C1, C1E, C6S, and C6SP.

Sierra Forest SoC is built with modules, each module includes 4 cores
(Crestmont microarchitecture). There is one L2 cache per module, shared
between the 4 cores.

There is no core C6 state, but there is C6S state, which has module scope:
when all 4 cores request C6S, the entire module (4 cores + L2 cache)
enters the low power state.

C6SP state has package scope - when all modules in the package enter C6S,
the package enters the power state mode.

Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>

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Artem Bityutskiy 2023-12-14 18:56:22 +02:00 • committed by Rafael J. Wysocki

parent ac89d11b93

commit 92813fd5b1

1 changed files with 44 additions and 0 deletions

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drivers/idle/intel_idle.c

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