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SubjectRe: [PATCH v2 1/5] ACPI: CPPC: Check _OSC for flexible address space
On 18-05-22, 11:08, Pierre Gondois wrote:
> ACPI 6.2 Section 6.2.11.2 'Platform-Wide OSPM Capabilities':
> Starting with ACPI Specification 6.2, all _CPC registers can be in
> PCC, System Memory, System IO, or Functional Fixed Hardware address
> spaces. OSPM support for this more flexible register space scheme is
> indicated by the “Flexible Address Space for CPPC Registers” _OSC bit
>
> Otherwise (cf ACPI 6.1, s8.4.7.1.1.X), _CPC registers must be in:
> - PCC or Functional Fixed Hardware address space if defined
> - SystemMemory address space (NULL register) if not defined
>
> Add the corresponding _OSC bit and check it when parsing _CPC objects.
>
> Signed-off-by: Pierre Gondois <pierre.gondois@arm.com>
> Reviewed-by: Sudeep Holla <sudeep.holla@arm.com>
> ---
> drivers/acpi/bus.c | 18 ++++++++++++++++++
> drivers/acpi/cppc_acpi.c | 9 +++++++++
> include/linux/acpi.h | 2 ++
> 3 files changed, 29 insertions(+)

It would be much useful to get a cover letter for this series with
what you have changed since the previous version. It is almost
impossible to find that out otherwise.

--
viresh

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