linux-kernel - Re: [PATCH 0/2] Make cppc acpi driver aware of pcc subspace ids

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Message-ID: <2438938.qNZk1AErMU@aspire.rjw.lan>
Date:   Wed, 28 Jun 2017 23:20:13 +0200
From:   "Rafael J. Wysocki" <rjw@...ysocki.net>
To:     George Cherian <george.cherian@...ium.com>
Cc:     linux-acpi@...r.kernel.org, linux-kernel@...r.kernel.org,
        devel@...ica.org, lenb@...nel.org, jassisinghbrar@...il.com,
        robert.moore@...el.com, lv.zheng@...el.com,
        Prashanth Prakash <pprakash@...eaurora.org>,
        Ashwin Chaugule <ashwin.chaugule@...aro.org>,
        Ashwin Chaugule <ashwinch@...gle.com>
Subject: Re: [PATCH 0/2] Make cppc acpi driver aware of pcc subspace ids

On Tuesday, June 13, 2017 02:17:09 PM George Cherian wrote:
> The current cppc acpi driver works with only one pcc subspace id.
> It maintains and registers only one pcc channel even if the acpi table has 
> different pcc subspace ids. 
> 
> As per ACPI 6.2 spec  all PCC registers, for all processors in the same 
> performance domain (as defined by _PSD), must be defined to be in the same
> subspace. The series tries to address the same by making cppc acpi driver 
> aware of multiple possible pcc subspace ids.
> 
> Patch 1 : In preparation to share the MAX_PCC_SUBSPACE definition with cppc acpi
>           driver
> Patch 2 : Make the cppc acpi driver aware of multiple pcc subspace ids.
> 
> 
> George Cherian (2):
>   mailbox: PCC: Move the MAX_PCC_SUBSPACES definition to header file
>   ACPI / CPPC: Make cppc acpi driver aware of pcc subspace ids
> 
>  drivers/acpi/cppc_acpi.c | 179 +++++++++++++++++++++++++----------------------
>  drivers/mailbox/pcc.c    |   1 -
>  include/acpi/pcc.h       |   1 +
>  3 files changed, 97 insertions(+), 84 deletions(-)

I need Ashwing and Prashanth to look at this series and let me know what they
think.

Thanks,
Rafael