From: Sudeep Holla <sudeep.holla@arm.com>
To: Viresh Kumar <viresh.kumar@linaro.org>
Cc: Sudeep Holla <sudeep.holla@arm.com>,
Rafael Wysocki <rjw@rjwysocki.net>,
ulf.hansson@linaro.org, Kevin Hilman <khilman@linaro.org>,
Viresh Kumar <vireshk@kernel.org>, Nishanth Menon <nm@ti.com>,
Stephen Boyd <sboyd@codeaurora.org>,
linaro-kernel@lists.linaro.org, linux-pm@vger.kernel.org,
linux-kernel@vger.kernel.org,
Vincent Guittot <vincent.guittot@linaro.org>,
robh+dt@kernel.org, lina.iyer@linaro.org, rnayak@codeaurora.org,
devicetree@vger.kernel.org
Subject: Re: [PATCH V4 1/9] PM / OPP: Allow OPP table to be used for power-domains
Date: Tue, 18 Apr 2017 17:03:11 +0100 [thread overview]
Message-ID: <2128c09a-0656-0878-c4e7-c327007021c7@arm.com> (raw)
In-Reply-To: <20170417053303.GG28191@vireshk-i7>
On 17/04/17 06:33, Viresh Kumar wrote:
> On 13-04-17, 14:43, Sudeep Holla wrote:
>> Interesting. My understand of power domain and in particular power
>> domain performance was that it would control both. The abstract number
>> you introduce would hide clocks and regulators.
>>
>> But if the concept treats it just as yet another regulator, we do we
>> need these at all. Why don't we relate this performance to regulator
>> values and be done with it ?
>>
>> Sorry if I am missing to understand something here. I would look this as
>> replacement for both clocks and regulators, something similar to ACPI
>> CPPC. If not, it looks unnecessary to me with the information I have got
>> so far.
>
> I kind of answered that in the other email.
>
> Some background may be good here. So Qcom tried to solve all this with virtual
> regulators, but the problem was that they need to talk in terms of integer
> values (1, 2, 3..) and not voltages and so they can't use the regulator
> framework straight away. And so we are doing all this.
>
Was it posted externally ? Was there any objections for that approach ?
IMO that's better approach but if I am late to the party, I would like
to read through the discussions that happened on it(if any)
--
Regards,
Sudeep
next prev parent reply other threads:[~2017-04-18 16:03 UTC|newest]
Thread overview: 55+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-03-20 9:32 [PATCH V4 0/9] PM / Domains: Implement domain performance states Viresh Kumar
2017-03-20 9:32 ` [PATCH V4 1/9] PM / OPP: Allow OPP table to be used for power-domains Viresh Kumar
2017-03-24 15:44 ` Rob Herring
2017-04-10 9:25 ` Viresh Kumar
2017-04-10 9:50 ` Viresh Kumar
2017-04-12 16:49 ` Sudeep Holla
2017-04-13 5:37 ` Viresh Kumar
2017-04-13 13:42 ` Sudeep Holla
2017-04-17 5:27 ` Viresh Kumar
2017-04-18 16:01 ` Sudeep Holla
2017-04-19 10:11 ` Viresh Kumar
2017-04-19 11:47 ` Viresh Kumar
2017-04-19 13:58 ` Sudeep Holla
2017-04-20 5:25 ` Viresh Kumar
2017-04-20 8:23 ` Ulf Hansson
2017-04-20 9:33 ` Viresh Kumar
2017-04-20 9:51 ` Sudeep Holla
2017-04-20 9:43 ` Sudeep Holla
2017-04-20 9:52 ` Viresh Kumar
2017-04-23 22:07 ` Kevin Hilman
2017-04-26 4:32 ` Rajendra Nayak
2017-04-26 13:55 ` Mark Brown
2017-04-27 9:42 ` Sudeep Holla
2017-04-27 10:50 ` Rajendra Nayak
2017-04-28 5:00 ` Viresh Kumar
2017-04-28 9:44 ` Sudeep Holla
2017-04-28 11:12 ` Viresh Kumar
2017-04-30 12:49 ` Mark Brown
2017-05-03 11:21 ` Sudeep Holla
2017-05-14 9:55 ` Mark Brown
2017-04-12 17:05 ` Sudeep Holla
2017-04-13 5:50 ` Viresh Kumar
2017-04-13 13:43 ` Sudeep Holla
2017-04-17 5:33 ` Viresh Kumar
2017-04-18 16:03 ` Sudeep Holla [this message]
2017-04-19 10:12 ` Viresh Kumar
2017-03-20 9:32 ` [PATCH V4 2/9] PM / Domains: Use OPP tables " Viresh Kumar
2017-04-12 16:58 ` Sudeep Holla
2017-04-13 6:03 ` Viresh Kumar
2017-04-13 13:45 ` Sudeep Holla
2017-03-20 9:32 ` [PATCH V4 3/9] PM / QOS: Keep common notifier list for genpd constraints Viresh Kumar
2017-04-19 14:06 ` Ulf Hansson
2017-04-20 4:45 ` [PATCH V5 " Viresh Kumar
2017-03-20 9:32 ` [PATCH V4 4/9] PM / QOS: Add DEV_PM_QOS_PERFORMANCE request Viresh Kumar
2017-04-19 14:07 ` Ulf Hansson
2017-04-20 4:34 ` Viresh Kumar
2017-04-20 4:46 ` [PATCH V5 " Viresh Kumar
2017-04-20 6:53 ` Ulf Hansson
2017-03-20 9:32 ` [PATCH V4 5/9] PM / OPP: Add support to parse OPP table for power-domains Viresh Kumar
2017-03-20 9:32 ` [PATCH V4 6/9] PM / OPP: Add dev_pm_opp_find_dps() helper Viresh Kumar
2017-03-20 9:32 ` [PATCH V4 7/9] PM / domain: Register for PM QOS performance notifier Viresh Kumar
2017-04-20 4:46 ` [PATCH V5 " Viresh Kumar
2017-03-20 9:32 ` [PATCH V4 8/9] PM / Domain: Add struct device to genpd Viresh Kumar
2017-03-20 9:32 ` [PATCH V4 9/9] PM / Domain: Add support to parse domain's OPP table Viresh Kumar
2017-04-12 14:24 ` [PATCH V4 0/9] PM / Domains: Implement domain performance states Viresh Kumar
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