From: Pavel Machek <pavel@ucw.cz>
To: Greg KH <greg@kroah.com>,
balbi@ti.com, bigeasy@linutronix.de, george.cherian@ti.com,
tony@atomide.com, varkabhadram@gmail.com,
linux-kernel@vger.kernel.org
Cc: pali.rohar@gmail.com, sre@debian.org, sre@ring0.de,
linux-arm-kernel <linux-arm-kernel@lists.infradead.org>,
linux-omap@vger.kernel.org, tony@atomide.com, khilman@kernel.org,
aaro.koskinen@iki.fi, ivo.g.dimitrov.75@gmail.com,
patrikbachan@gmail.com
Subject: Re: musb-hdrc: "Vbus off, timeout 1100 msec" message does not belong in sysfs
Date: Thu, 9 Jul 2015 23:46:10 +0200 [thread overview]
Message-ID: <20150709214610.GA20890@amd> (raw)
In-Reply-To: <20150709213922.GA32698@amd>
On Thu 2015-07-09 23:39:22, Pavel Machek wrote:
> Hi!
>
> sysfs should contain one value per file. This one has at least two,
> with nice english sentence as a bonus.
>
> root@n900:/sys/devices/platform/68000000.ocp/480ab000.usb_otg_hs/musb-hdrc.0.auto#
> cat vbus
> Vbus off, timeout 1100 msec
>
> :-(.
Plus, documentation for this is nowhere to be seen:
pavel@amd:/data/l/linux-n900$ grep -ri musb Documentation/ABI/
pavel@amd:/data/l/linux-n900$
..which is a shame, because it is not really clear how to use this
one:
root@n900:/sys/devices/platform/68000000.ocp/480ab000.usb_otg_hs/musb-hdrc.0.auto#
cat mode
b_idle
root@n900:/sys/devices/platform/68000000.ocp/480ab000.usb_otg_hs/musb-hdrc.0.auto#
echo a_suspend > mode
-bash: echo: write error: Invalid argument
root@n900:/sys/devices/platform/68000000.ocp/480ab000.usb_otg_hs/musb-hdrc.0.auto#
echo a > mode
-bash: echo: write error: Invalid argument
root@n900:/sys/devices/platform/68000000.ocp/480ab000.usb_otg_hs/musb-hdrc.0.auto#
echo a_host > mode
-bash: echo: write error: Invalid argument
root@n900:/sys/devices/platform/68000000.ocp/480ab000.usb_otg_hs/musb-hdrc.0.auto#
echo b_host > mode
-bash: echo: write error: Invalid argument
root@n900:/sys/devices/platform/68000000.ocp/480ab000.usb_otg_hs/musb-hdrc.0.auto#
echo a_idle > mode
-bash: echo: write error: Invalid argument
root@n900:/sys/devices/platform/68000000.ocp/480ab000.usb_otg_hs/musb-hdrc.0.auto#
echo b_wait_acon > mode
-bash: echo: write error: Invalid argument
root@n900:/sys/devices/platform/68000000.ocp/480ab000.usb_otg_hs/musb-hdrc.0.auto#
Pavel
--
(english) http://www.livejournal.com/~pavelmachek
(cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html
next prev parent reply other threads:[~2015-07-09 21:46 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-07-09 21:39 musb-hdrc: "Vbus off, timeout 1100 msec" message does not belong in sysfs Pavel Machek
2015-07-09 21:46 ` Pavel Machek [this message]
2015-07-09 21:54 ` Pali Rohár
2015-07-10 7:17 ` Sebastian Andrzej Siewior
2015-07-13 20:30 ` Felipe Balbi
2015-07-10 19:50 ` Felipe Balbi
2015-07-10 21:46 ` Pavel Machek
2015-07-10 23:21 ` Greg KH
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