From: Quentin Perret <qperret@google.com>
To: Lukasz Luba <lukasz.luba@arm.com>
Cc: Daniel Lezcano <daniel.lezcano@linaro.org>,
"Rafael J. Wysocki" <rafael@kernel.org>,
"Rafael J. Wysocki" <rjw@rjwysocki.net>,
Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
Linux PM <linux-pm@vger.kernel.org>,
"open list:DOCUMENTATION" <linux-doc@vger.kernel.org>,
"devicetree@vger.kernel.org" <devicetree@vger.kernel.org>,
Rob Herring <robh+dt@kernel.org>,
Amit Kucheria <amitk@kernel.org>,
Jonathan Corbet <corbet@lwn.net>,
Dietmar Eggemann <Dietmar.Eggemann@arm.com>,
Doug Anderson <dianders@chromium.org>,
Matthias Kaehlcke <mka@chromium.org>,
"Nayak, Rajendra" <rnayak@codeaurora.org>
Subject: Re: [PATCH v2 0/3] Clarify abstract scale usage for power values in Energy Model, EAS and IPA
Date: Fri, 16 Oct 2020 17:02:18 +0100 [thread overview]
Message-ID: <20201016160218.GC2426638@google.com> (raw)
In-Reply-To: <deffb2b4-34cb-3f46-af89-cc216d1cf5c5@arm.com>
On Friday 16 Oct 2020 at 15:42:57 (+0100), Lukasz Luba wrote:
> Do you mean a new entry in DT which will be always below
> 'dynamic-power-coefficient' and/or 'sustainable-power' saying the unit
> of above value?
Yes, something like that.
> There was discussion with Rob (and Doug) about this. I got the
> impression he was against any new DT stuff [1].
> We don't have to, I think we all agree that DT will only support mW.
Right, I agree this is a 'nice-to-have'.
> I have agreed to this idea having a 'flag' inside EM [2], which
> indicates the mW or bogoWatts. It could be set via API:
> em_dev_register_perf_domain() and this new last argument.
>
> I can write that patch. There is only two usage (3rd is on LKML) of
> that function. The DT way, which is via:
> dev_pm_opp_of_register_em() will always set 'true';
> Driver direct calls of em_dev_register_perf_domain(), will have to
> set appropriate value ('true' or 'false'). The EM struct em_perf_domain
> will have the new bool field set based on that.
> Is it make sense?
I had something more complicated in mind, where units are arbitrary
('milliwats', 'scmi-bogowatts', ...) as that would help if units can be
specified in the DT too, but if we don't care about that then yes I
suppose a boolean flag should do.
Thanks!
Quentin
next prev parent reply other threads:[~2020-10-16 16:02 UTC|newest]
Thread overview: 39+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-10-02 11:44 [PATCH v2 0/3] Clarify abstract scale usage for power values in Energy Model, EAS and IPA Lukasz Luba
2020-10-02 11:44 ` [PATCH v2 1/3] docs: Clarify abstract scale usage for power values in Energy Model Lukasz Luba
2020-10-02 11:44 ` [PATCH v2 2/3] PM / EM: update the comments related to power scale Lukasz Luba
2020-10-02 11:44 ` [PATCH v2 3/3] dt-bindings: thermal: update sustainable-power with abstract scale Lukasz Luba
2020-10-02 14:31 ` Doug Anderson
2020-10-02 15:12 ` Lukasz Luba
2020-10-02 15:47 ` Doug Anderson
2020-10-02 16:40 ` Lukasz Luba
2020-10-02 17:39 ` Doug Anderson
2020-10-06 22:24 ` Rob Herring
2020-10-07 1:17 ` Doug Anderson
2020-10-07 13:26 ` Rob Herring
2020-10-07 21:40 ` Doug Anderson
2020-10-08 14:20 ` Lukasz Luba
2020-10-08 16:41 ` Doug Anderson
2020-10-07 9:03 ` Lukasz Luba
2020-10-05 13:58 ` Rob Herring
2020-10-05 16:14 ` Lukasz Luba
2020-10-09 9:16 ` [PATCH v2 0/3] Clarify abstract scale usage for power values in Energy Model, EAS and IPA Lukasz Luba
2020-10-14 8:22 ` Daniel Lezcano
2020-10-14 9:08 ` Lukasz Luba
2020-10-14 11:23 ` Daniel Lezcano
2020-10-14 15:24 ` Lukasz Luba
2020-10-14 17:10 ` Daniel Lezcano
2020-10-15 9:00 ` Lukasz Luba
2020-10-15 10:21 ` Daniel Lezcano
2020-10-15 13:40 ` Rafael J. Wysocki
2020-10-15 15:04 ` Quentin Perret
2020-10-16 11:48 ` Daniel Lezcano
2020-10-16 12:18 ` Quentin Perret
2020-10-16 12:50 ` Daniel Lezcano
2020-10-16 13:09 ` Quentin Perret
2020-10-16 14:36 ` Doug Anderson
2020-10-16 15:55 ` Quentin Perret
2020-10-16 14:42 ` Lukasz Luba
2020-10-16 16:02 ` Quentin Perret [this message]
2020-10-19 10:35 ` Lukasz Luba
2020-10-15 13:33 ` Rafael J. Wysocki
2020-10-15 13:39 ` Daniel Lezcano
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20201016160218.GC2426638@google.com \
--to=qperret@google.com \
--cc=Dietmar.Eggemann@arm.com \
--cc=amitk@kernel.org \
--cc=corbet@lwn.net \
--cc=daniel.lezcano@linaro.org \
--cc=devicetree@vger.kernel.org \
--cc=dianders@chromium.org \
--cc=linux-doc@vger.kernel.org \
--cc=linux-kernel@vger.kernel.org \
--cc=linux-pm@vger.kernel.org \
--cc=lukasz.luba@arm.com \
--cc=mka@chromium.org \
--cc=rafael@kernel.org \
--cc=rjw@rjwysocki.net \
--cc=rnayak@codeaurora.org \
--cc=robh+dt@kernel.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).