From: Stephen Boyd <sboyd@codeaurora.org>
To: Gregory CLEMENT <gregory.clement@free-electrons.com>
Cc: "Mike Turquette" <mturquette@baylibre.com>,
linux-clk@vger.kernel.org, linux-kernel@vger.kernel.org,
"Jason Cooper" <jason@lakedaemon.net>,
"Andrew Lunn" <andrew@lunn.ch>,
"Sebastian Hesselbarth" <sebastian.hesselbarth@gmail.com>,
"Thomas Petazzoni" <thomas.petazzoni@free-electrons.com>,
linux-arm-kernel@lists.infradead.org,
"Antoine Tenart" <antoine.tenart@free-electrons.com>,
"Miquèl Raynal" <miquel.raynal@free-electrons.com>,
"Nadav Haklai" <nadavh@marvell.com>,
"Victor Gu" <xigu@marvell.com>, "Marcin Wojtas" <mw@semihalf.com>,
"Wilson Ding" <dingwei@marvell.com>,
"Hua Jing" <jinghua@marvell.com>,
"Neta Zur Hershkovits" <neta@marvell.com>
Subject: Re: [PATCH 0/3] Add DVFS support on CPU clock for Armada 37xx
Date: Thu, 21 Dec 2017 15:13:41 -0800 [thread overview]
Message-ID: <20171221231341.GC7997@codeaurora.org> (raw)
In-Reply-To: <20171130134029.20751-1-gregory.clement@free-electrons.com>
On 11/30, Gregory CLEMENT wrote:
> Hi,
>
> This small series is needed to use DVFS on Armada 37xx. When DVFS is
> enabled the CPU clock setting is done using an other set of registers
> from the North Bridge Power Management block.
>
> The series adds the possibility to modify the CPU frequency using the
> associate load level matching the target frequency. However
> configuring the frequencies for each load is done by the cpufreq
> driver submitted in a separate series.
>
> Obviously having both series (cpufreq and clk) is needed to support
> DVFS on Armada 37xx, but there is no dependencies between the series
> (for building or at runtime).
>
Are you relying on the clk API returning an error to detect if
DVFS is present or not? Just curious why that part of the code
was there.
--
Qualcomm Innovation Center, Inc. is a member of Code Aurora Forum,
a Linux Foundation Collaborative Project
WARNING: multiple messages have this Message-ID (diff)
From: sboyd@codeaurora.org (Stephen Boyd)
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCH 0/3] Add DVFS support on CPU clock for Armada 37xx
Date: Thu, 21 Dec 2017 15:13:41 -0800 [thread overview]
Message-ID: <20171221231341.GC7997@codeaurora.org> (raw)
In-Reply-To: <20171130134029.20751-1-gregory.clement@free-electrons.com>
On 11/30, Gregory CLEMENT wrote:
> Hi,
>
> This small series is needed to use DVFS on Armada 37xx. When DVFS is
> enabled the CPU clock setting is done using an other set of registers
> from the North Bridge Power Management block.
>
> The series adds the possibility to modify the CPU frequency using the
> associate load level matching the target frequency. However
> configuring the frequencies for each load is done by the cpufreq
> driver submitted in a separate series.
>
> Obviously having both series (cpufreq and clk) is needed to support
> DVFS on Armada 37xx, but there is no dependencies between the series
> (for building or at runtime).
>
Are you relying on the clk API returning an error to detect if
DVFS is present or not? Just curious why that part of the code
was there.
--
Qualcomm Innovation Center, Inc. is a member of Code Aurora Forum,
a Linux Foundation Collaborative Project
next prev parent reply other threads:[~2017-12-21 23:13 UTC|newest]
Thread overview: 21+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-11-30 13:40 [PATCH 0/3] Add DVFS support on CPU clock for Armada 37xx Gregory CLEMENT
2017-11-30 13:40 ` Gregory CLEMENT
2017-11-30 13:40 ` [PATCH 1/3] clk: mvebu: armada-37xx-periph: cosmetic changes Gregory CLEMENT
2017-11-30 13:40 ` Gregory CLEMENT
2017-12-21 23:12 ` Stephen Boyd
2017-12-21 23:12 ` Stephen Boyd
2017-11-30 13:40 ` [PATCH 2/3] clk: mvebu: armada-37xx-periph: prepare cpu clk to be used with DVFS Gregory CLEMENT
2017-11-30 13:40 ` Gregory CLEMENT
2017-12-21 23:12 ` Stephen Boyd
2017-12-21 23:12 ` Stephen Boyd
2017-11-30 13:40 ` [PATCH 3/3] clk: mvebu: armada-37xx-periph: add DVFS support for cpu clocks Gregory CLEMENT
2017-11-30 13:40 ` Gregory CLEMENT
2017-12-21 23:12 ` Stephen Boyd
2017-12-21 23:12 ` Stephen Boyd
2017-12-21 10:53 ` [PATCH 0/3] Add DVFS support on CPU clock for Armada 37xx Gregory CLEMENT
2017-12-21 10:53 ` Gregory CLEMENT
2017-12-21 23:13 ` Stephen Boyd [this message]
2017-12-21 23:13 ` Stephen Boyd
2017-12-22 10:02 ` Gregory CLEMENT
2017-12-22 10:02 ` Gregory CLEMENT
2017-12-22 10:02 ` Gregory CLEMENT
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=20171221231341.GC7997@codeaurora.org \
--to=sboyd@codeaurora.org \
--cc=andrew@lunn.ch \
--cc=antoine.tenart@free-electrons.com \
--cc=dingwei@marvell.com \
--cc=gregory.clement@free-electrons.com \
--cc=jason@lakedaemon.net \
--cc=jinghua@marvell.com \
--cc=linux-arm-kernel@lists.infradead.org \
--cc=linux-clk@vger.kernel.org \
--cc=linux-kernel@vger.kernel.org \
--cc=miquel.raynal@free-electrons.com \
--cc=mturquette@baylibre.com \
--cc=mw@semihalf.com \
--cc=nadavh@marvell.com \
--cc=neta@marvell.com \
--cc=sebastian.hesselbarth@gmail.com \
--cc=thomas.petazzoni@free-electrons.com \
--cc=xigu@marvell.com \
/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 an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.