LKML Archive on lore.kernel.org
help / color / mirror / Atom feed
From: Stephen Boyd <swboyd@chromium.org>
To: Bjorn Andersson <bjorn.andersson@linaro.org>,
	Rajendra Nayak <rnayak@codeaurora.org>
Cc: ulf.hansson@linaro.org, viresh.kumar@linaro.org,
	linux-pm@vger.kernel.org, devicetree@vger.kernel.org,
	linux-kernel@vger.kernel.org, linux-arm-msm@vger.kernel.org,
	rojay@codeaurora.org, stephan@gerhold.net
Subject: Re: [PATCH v4 2/2] arm64: dts: sc7180: Add required-opps for i2c
Date: Fri, 16 Jul 2021 22:21:06 +0200	[thread overview]
Message-ID: <CAE-0n53CHD8c7C4ETWRgzmZmFSCcBw46wSs4pKbYMRjA_tD3yg@mail.gmail.com> (raw)
In-Reply-To: <YPHpsO5LlQRQxj9y@yoga>

Quoting Bjorn Andersson (2021-07-16 13:18:56)
> On Fri 16 Jul 05:00 CDT 2021, Rajendra Nayak wrote:
>
> > qup-i2c devices on sc7180 are clocked with a fixed clock (19.2 MHz)
> > Though qup-i2c does not support DVFS, it still needs to vote for a
> > performance state on 'CX' to satisfy the 19.2 Mhz clock frequency
> > requirement.
> >
>
> Sounds good, but...
>
> > Use 'required-opps' to pass this information from
> > device tree, and also add the power-domains property to specify
> > the CX power-domain.
> >
>
> ..is the required-opps really needed with my rpmhpd patch in place?
>

Yes? Because rpmhpd_opp_low_svs is not the lowest performance state for
CX.

  reply	other threads:[~2021-07-16 20:21 UTC|newest]

Thread overview: 19+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-07-16 10:00 [PATCH v4 0/2] PM / Domains: Add support for 'required-opps' to set default perf state Rajendra Nayak
2021-07-16 10:00 ` [PATCH v4 1/2] " Rajendra Nayak
2021-07-16 20:19   ` Stephen Boyd
2021-07-19 11:50     ` Rajendra Nayak
2021-07-16 10:00 ` [PATCH v4 2/2] arm64: dts: sc7180: Add required-opps for i2c Rajendra Nayak
2021-07-16 19:39   ` Stephen Boyd
2021-07-16 20:18   ` Bjorn Andersson
2021-07-16 20:21     ` Stephen Boyd [this message]
2021-07-16 20:52       ` Bjorn Andersson
2021-07-16 21:49         ` Stephen Boyd
2021-07-16 21:59           ` Bjorn Andersson
2021-07-19  9:37             ` Rajendra Nayak
2021-07-19 19:19               ` Bjorn Andersson
2021-07-20  4:29                 ` Rajendra Nayak
2021-07-25 17:01                   ` Bjorn Andersson
2021-07-27  7:35                     ` Rajendra Nayak
2021-07-28  3:46                       ` Bjorn Andersson
2021-07-28 14:01                         ` Dmitry Baryshkov
2021-07-28 18:47                           ` Bjorn Andersson

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=CAE-0n53CHD8c7C4ETWRgzmZmFSCcBw46wSs4pKbYMRjA_tD3yg@mail.gmail.com \
    --to=swboyd@chromium.org \
    --cc=bjorn.andersson@linaro.org \
    --cc=devicetree@vger.kernel.org \
    --cc=linux-arm-msm@vger.kernel.org \
    --cc=linux-kernel@vger.kernel.org \
    --cc=linux-pm@vger.kernel.org \
    --cc=rnayak@codeaurora.org \
    --cc=rojay@codeaurora.org \
    --cc=stephan@gerhold.net \
    --cc=ulf.hansson@linaro.org \
    --cc=viresh.kumar@linaro.org \
    --subject='Re: [PATCH v4 2/2] arm64: dts: sc7180: Add required-opps for i2c' \
    /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

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).