From: Tony Lindgren <tony-4v6yS6AI5VpBDgjK7y7TUQ@public.gmane.org>
To: Ladislav Michl <ladis-6z/3iImG2C8G8FEW9MqTrA@public.gmane.org>
Cc: Greg KH
<gregkh-hQyY1W1yCW8ekmWlsbkhG0B+6BGkLq7r@public.gmane.org>,
linux-usb-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
linux-omap-u79uwXL29TY76Z2rM5mHXA@public.gmane.org
Subject: Re: EHCI and MUSB do not discover devices without CONFIG_PM
Date: Tue, 28 Nov 2017 09:16:48 -0800 [thread overview]
Message-ID: <20171128171648.GF28152@atomide.com> (raw)
In-Reply-To: <20171128165802.GA2186@lenoch>
* Ladislav Michl <ladis-6z/3iImG2C8G8FEW9MqTrA@public.gmane.org> [171128 17:01]:
> On Tue, Nov 28, 2017 at 06:39:13AM -0800, Tony Lindgren wrote:
> > Limiting things to C1 with cpuidle is probably what you need
> > for having USB also working.
>
> With echo 1 > /sys/devices/system/cpu/cpu0/cpuidle/state{1-6}/disable
> jitter is about 100us which is about 3x worse than with CONFIG_PM
> disabled (and much better when idling), but decoder works with
> occassional errors.
OK sounds like there is still something happening in the idle path
beyond WFI then.
> Anyway, it would be nice to find out why USB does not work with CONFIG_PM
> disabled :)
Sure.
Tony
--
To unsubscribe from this list: send the line "unsubscribe linux-usb" in
the body of a message to majordomo-u79uwXL29TY76Z2rM5mHXA@public.gmane.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
next prev parent reply other threads:[~2017-11-28 17:16 UTC|newest]
Thread overview: 18+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-11-27 22:08 EHCI and MUSB do not discover devices without CONFIG_PM Ladislav Michl
2017-11-28 7:33 ` Greg KH
[not found] ` <20171128073328.GF10757-U8xfFu+wG4EAvxtiuMwx3w@public.gmane.org>
2017-11-28 8:57 ` Ladislav Michl
2017-11-28 9:03 ` Felipe Balbi
[not found] ` <87induzseh.fsf-VuQAYsv1563Yd54FQh9/CA@public.gmane.org>
2017-11-28 9:42 ` Ladislav Michl
2017-11-28 9:30 ` Greg KH
[not found] ` <20171128093054.GA20720-U8xfFu+wG4EAvxtiuMwx3w@public.gmane.org>
2017-11-28 9:39 ` Ladislav Michl
2017-11-28 14:11 ` Tony Lindgren
[not found] ` <20171128141131.GR28152-4v6yS6AI5VpBDgjK7y7TUQ@public.gmane.org>
2017-11-28 14:28 ` Ladislav Michl
2017-11-28 14:39 ` Tony Lindgren
[not found] ` <20171128143913.GS28152-4v6yS6AI5VpBDgjK7y7TUQ@public.gmane.org>
2017-11-28 16:58 ` Ladislav Michl
2017-11-28 17:16 ` Tony Lindgren [this message]
2017-11-28 15:00 ` Alan Stern
[not found] ` <Pine.LNX.4.44L0.1711280956560.1467-100000-IYeN2dnnYyZXsRXLowluHWD2FQJk+8+b@public.gmane.org>
2017-11-28 16:05 ` Ladislav Michl
2017-11-28 18:09 ` Alan Stern
[not found] ` <Pine.LNX.4.44L0.1711281307250.1467-100000-IYeN2dnnYyZXsRXLowluHWD2FQJk+8+b@public.gmane.org>
2017-11-28 19:27 ` Ladislav Michl
2017-11-28 19:59 ` Alan Stern
[not found] ` <Pine.LNX.4.44L0.1711281452520.1467-100000-IYeN2dnnYyZXsRXLowluHWD2FQJk+8+b@public.gmane.org>
2017-11-28 20:14 ` Ladislav Michl
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=20171128171648.GF28152@atomide.com \
--to=tony-4v6ys6ai5vpbdgjk7y7tuq@public.gmane.org \
--cc=gregkh-hQyY1W1yCW8ekmWlsbkhG0B+6BGkLq7r@public.gmane.org \
--cc=ladis-6z/3iImG2C8G8FEW9MqTrA@public.gmane.org \
--cc=linux-omap-u79uwXL29TY76Z2rM5mHXA@public.gmane.org \
--cc=linux-usb-u79uwXL29TY76Z2rM5mHXA@public.gmane.org \
/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.