[<prev] [next>] [<thread-prev] [day] [month] [year] [list]
Message-ID: <2621899b-4c0b-e78d-5432-1993a3d295f1@arm.com>
Date: Wed, 10 Jan 2018 16:45:26 +0000
From: Sudeep Holla <sudeep.holla@....com>
To: Viresh Kumar <viresh.kumar@...aro.org>
Cc: Sudeep Holla <sudeep.holla@....com>,
linux-arm-kernel@...ts.infradead.org, linux-pm@...r.kernel.org,
linux-kernel@...r.kernel.org,
Jeremy Linton <jeremy.linton@....com>,
Lorenzo Pieralisi <lorenzo.pieralisi@....com>,
"Rafael J. Wysocki" <rjw@...ysocki.net>
Subject: Re: [PATCH 2/2] cpufreq: scpi: remove arm_big_little dependency
On 10/01/18 14:46, Viresh Kumar wrote:
> On 09-01-18, 16:49, Sudeep Holla wrote:
>> The dependency on physical_package_id from the topology to get the
>> cluster identifier is wrong. The concept of cluster used in ARM topology
>> is unfortunately not well defined in the architecture, we should avoid
>> using it. Further the frequency domain need not be mapped to so called
>> "clusters" one to one.
>>
>> SCPI already provides means to obtain the frequency domain id from the
>> device tree. In order to support some new topologies(e.g. DSU which
>> contains 2 frequency domains within the physical cluster), pseudo
>> clusters are created to make this driver work which is wrong again.
>>
>> In order to solve those issues and also remove dependency of topological
>> physical id for frequency domain, this patch removes the arm_big_little
>> dependency from scpi driver.
>>
>> Cc: "Rafael J. Wysocki" <rjw@...ysocki.net>
>> Cc: Viresh Kumar <viresh.kumar@...aro.org>
>> Signed-off-by: Sudeep Holla <sudeep.holla@....com>
>> ---
>> drivers/cpufreq/scpi-cpufreq.c | 193 +++++++++++++++++++++++++++++++++++++----
>> 1 file changed, 178 insertions(+), 15 deletions(-)
>
> Acked-by: Viresh Kumar <viresh.kumar@...aro.org>
>
Thanks :)
--
Regards,
Sudeep
Powered by blists - more mailing lists