Re: [PATCH v2 1/5] ACPI: CPPC: Check _OSC for flexible address space

[Viresh Kumar]

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@xxxxxxx>
> Reviewed-by: Sudeep Holla <sudeep.holla@xxxxxxx>
> ---
>  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