linux-kernel - Re: [PATCH v2 18/18] cpufreq: scmi: add support for fast frequency switching

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Message-ID: <20170809101301.GB29383@vireshk-i7>
Date:   Wed, 9 Aug 2017 15:43:01 +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>, Alexey Klimov <alexey.klimov@....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 v2 18/18] cpufreq: scmi: add support for fast frequency
 switching

On 09-08-17, 11:09, Sudeep Holla wrote:
> Firmware needs to serialize or override based on the timing of the two
> consecutive requests.

Maybe add a comment over that routine and detail its working a bit? Like its not
synchronous, etc. I expect that you would also add a callback with SCMI, so that
the cpufreq driver is notified when frequency is changed ?

-- 
viresh