linux-kernel - Re: [PATCH v4 19/20] cpufreq: add support for CPU DVFS based on SCMI message protocol

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Message-ID: <20171107061540.GB3297@vireshk-i7>
Date:   Tue, 7 Nov 2017 11:45:40 +0530
From:   Viresh Kumar <viresh.kumar@...aro.org>
To:     Sudeep Holla <sudeep.holla@....com>
Cc:     ALKML <linux-arm-kernel@...ts.infradead.org>,
        LKML <linux-kernel@...r.kernel.org>,
        DTML <devicetree@...r.kernel.org>,
        Roy Franz <roy.franz@...ium.com>,
        Harb Abdulhamid <harba@...eaurora.org>,
        Nishanth Menon <nm@...com>, Arnd Bergmann <arnd@...db.de>,
        Loc Ho <lho@....com>, Ryan Harkin <Ryan.Harkin@....com>,
        Jassi Brar <jassisinghbrar@...il.com>,
        "Rafael J. Wysocki" <rjw@...ysocki.net>, linux-pm@...r.kernel.org
Subject: Re: [PATCH v4 19/20] cpufreq: add support for CPU DVFS based on SCMI
 message protocol

On 03-11-17, 14:47, Sudeep Holla wrote:
> On some ARM based systems, a separate Cortex-M based System Control
> Processor(SCP) provides the overall power, clock, reset and system
> control including CPU DVFS. SCMI Message Protocol is used to
> communicate with the SCP.
> 
> This patch adds a cpufreq driver for such systems using SCMI interface
> to drive CPU DVFS.
> 
> Cc: "Rafael J. Wysocki" <rjw@...ysocki.net>
> Cc: Viresh Kumar <viresh.kumar@...aro.org>
> Cc: linux-pm@...r.kernel.org
> Signed-off-by: Sudeep Holla <sudeep.holla@....com>
> ---
>  MAINTAINERS                    |   2 +-
>  drivers/cpufreq/Kconfig.arm    |  11 ++
>  drivers/cpufreq/Makefile       |   1 +
>  drivers/cpufreq/scmi-cpufreq.c | 274 +++++++++++++++++++++++++++++++++++++++++
>  4 files changed, 287 insertions(+), 1 deletion(-)
>  create mode 100644 drivers/cpufreq/scmi-cpufreq.c

Acked-by: Viresh Kumar <viresh.kumar@...aro.org>

-- 
viresh