linux-pm.vger.kernel.org archive mirror
 help / color / mirror / Atom feed
From: Sebastian Hesselbarth <sebastian.hesselbarth@gmail.com>
To: Russell King - ARM Linux <linux@arm.linux.org.uk>,
	Andrew Lunn <andrew@lunn.ch>
Cc: Jason Cooper <jason@lakedaemon.net>,
	Sebastian Hesselbarth <sebastian.hesselbarth@googlemail.com>,
	Gregory Clement <gregory.clement@free-electrons.com>,
	Mark Brown <broonie@kernel.org>,
	alsa-devel@alsa-project.org,
	Daniel Lezcano <daniel.lezcano@linaro.org>,
	"Rafael J. Wysocki" <rjw@rjwysocki.net>,
	linux-pm@vger.kernel.org, Tejun Heo <tj@kernel.org>,
	linux-ide@vger.kernel.org, Zhang Rui <rui.zhang@intel.com>,
	Bryan Wu <cooloney@gmail.com>, Richard Purdie <rpurdie@rpsys.net>,
	linux-leds@vger.kernel.org, Bjorn Helgaas <bhelgaas@google.com>,
	linux-pci@vger.kernel.org, Kishon Vijay Abraham I <kishon@ti.com>,
	Alessandro Zummo <a.zummo@towertech.it>,
	rtc-linux@googlegroups.com, Wim Van Sebroeck <wim@iguana.be>,
	linux-watchdog@vger.kernel.org
Subject: Re: [PATCH 00/13] Remove mach-kirkwood and mach-dove
Date: Mon, 30 Jun 2014 14:15:58 +0200	[thread overview]
Message-ID: <53B154FE.80804@gmail.com> (raw)
In-Reply-To: <20140629213510.GR32514@n2100.arm.linux.org.uk>

On 06/29/2014 11:35 PM, Russell King - ARM Linux wrote:
> On Sun, Jun 29, 2014 at 10:59:47PM +0200, Andrew Lunn wrote:
>> This patchset removes arch/arm/mach-kirkwood and arch/arm/mach-dove.
>> These SoCs are now supported in arch/arm/mach-mvebu using device tree.
>>
>> Change the dependencies for a number of drivers, either to use
>> ARCH_MVEBU where the drivers are generic, or MACH_KIRKWOOD and
>> MACH_DOVE where the drivers are specific to a SoC.
>>
>>
>> Andrew Lunn (13):
>>    ARM: Kirkwood: Remove mach-kirkwood
>>    ARM: Dove: Remove mach-dove
>
> There is actually a cubox regression which has yet to be tracked down.
> Running with my kernel (which is not-DT based) runs perfectly.  With
> DT, HDMI output can be unstable.
>
> One of the problems is that it's /very/ difficult to reproduce, but it
> is reproducable.  I've seen it on two days over many reboots, and I've
> proved it by switching back and forth.  DT sometimes suffers from the
> problem, whereas non-DT /never/ does.
>
> Sebastian is aware of this, and as yet we haven't found a solution,
> nor have we found a way to reliably reproduce it.

I am aware of the issue but have not been able to reproduce it. Also,
we have no /official/ non-DT CuBox support in mainline Linux at all.
I understand that removing non-DT mach-dove currently is not your
most preferred patch but from a mainline POV, mach-dove isn't actively
used. The three officially supported boards have been converted to DT
months ago and haven't received any TLC since then, so I doubt they are
used by anyone.

My current impression of the issue is that it is more related with
driver load order/missing delays for clocks/ignoring IP behavior on
clock rate change or something like it.

Can you give a /rough/ schedule for your plans to sort out your private
branches? If we can all investigate the issue with the same code basis,
I am sure we can make DT dove behave the same way non-DT dove seems to
be.

Sebastian

  parent reply	other threads:[~2014-06-30 12:15 UTC|newest]

Thread overview: 22+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2014-06-29 20:59 [PATCH 00/13] Remove mach-kirkwood and mach-dove Andrew Lunn
2014-06-29 20:59 ` [PATCH 05/13] cpuidle: kirkwood: Replace ARCH_KIRKWOOD dependency Andrew Lunn
2014-06-29 20:59 ` [PATCH 07/13] thermal: Replace ARCH_KIRKWOOD and ARCH_DOVE dependency Andrew Lunn
2014-06-29 21:35 ` [PATCH 00/13] Remove mach-kirkwood and mach-dove Russell King - ARM Linux
2014-06-30  7:16   ` [alsa-devel] " Jean-Francois Moine
2014-06-30  8:49     ` Russell King - ARM Linux
2014-06-30  9:47       ` Jean-Francois Moine
2014-06-30 10:00         ` Russell King - ARM Linux
2014-06-30 12:15   ` Sebastian Hesselbarth [this message]
2014-06-30 12:43     ` Russell King - ARM Linux
2014-06-30 13:22       ` Sebastian Hesselbarth
2014-06-30 14:25         ` Russell King - ARM Linux
2014-06-30 15:35           ` Sebastian Hesselbarth
2014-06-30 16:56             ` Russell King - ARM Linux
2014-06-30 17:31               ` Sebastian Hesselbarth
2014-06-30 19:35                 ` Russell King - ARM Linux
2014-06-30 17:43               ` Andrew Lunn
2014-06-30 18:08                 ` Russell King - ARM Linux
2014-06-30 18:16                   ` Andrew Lunn
2014-07-06  9:49                     ` [rtc-linux] " Alexander Holler
2014-06-30 22:21           ` Ezequiel Garcia
2014-07-08 12:13 ` Jason Cooper

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=53B154FE.80804@gmail.com \
    --to=sebastian.hesselbarth@gmail.com \
    --cc=a.zummo@towertech.it \
    --cc=alsa-devel@alsa-project.org \
    --cc=andrew@lunn.ch \
    --cc=bhelgaas@google.com \
    --cc=broonie@kernel.org \
    --cc=cooloney@gmail.com \
    --cc=daniel.lezcano@linaro.org \
    --cc=gregory.clement@free-electrons.com \
    --cc=jason@lakedaemon.net \
    --cc=kishon@ti.com \
    --cc=linux-ide@vger.kernel.org \
    --cc=linux-leds@vger.kernel.org \
    --cc=linux-pci@vger.kernel.org \
    --cc=linux-pm@vger.kernel.org \
    --cc=linux-watchdog@vger.kernel.org \
    --cc=linux@arm.linux.org.uk \
    --cc=rjw@rjwysocki.net \
    --cc=rpurdie@rpsys.net \
    --cc=rtc-linux@googlegroups.com \
    --cc=rui.zhang@intel.com \
    --cc=sebastian.hesselbarth@googlemail.com \
    --cc=tj@kernel.org \
    --cc=wim@iguana.be \
    /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).