From: pavel@ucw.cz (Pavel Machek)
To: linux-arm-kernel@lists.infradead.org
Subject: 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 at 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 at amd:/data/l/linux-n900$ grep -ri musb Documentation/ABI/
pavel at amd:/data/l/linux-n900$
..which is a shame, because it is not really clear how to use this
one:
root at n900:/sys/devices/platform/68000000.ocp/480ab000.usb_otg_hs/musb-hdrc.0.auto#
cat mode
b_idle
root at 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 at n900:/sys/devices/platform/68000000.ocp/480ab000.usb_otg_hs/musb-hdrc.0.auto#
echo a > mode
-bash: echo: write error: Invalid argument
root at 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 at 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 at 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 at 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 at 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 parent reply other threads:[~2015-07-09 21:46 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <20150709213922.GA32698@amd>
2015-07-09 21:46 ` Pavel Machek [this message]
2015-07-09 21:54 ` musb-hdrc: "Vbus off, timeout 1100 msec" message does not belong in sysfs Pali Rohár
2015-07-10 7:17 ` Sebastian Andrzej Siewior
2015-07-13 20:30 ` Felipe Balbi
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