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 06:11:31 -0800 [thread overview]
Message-ID: <20171128141131.GR28152@atomide.com> (raw)
In-Reply-To: <20171128093948.GA21766@lenoch>
* Ladislav Michl <ladis-6z/3iImG2C8G8FEW9MqTrA@public.gmane.org> [171128 09:42]:
> On Tue, Nov 28, 2017 at 10:30:54AM +0100, Greg KH wrote:
> > bit-banging an ir decoder, ugh, you are in for a world of hurt. Can't
> > you put a chip on the device that does this for you in hardware?
>
> OMAP has DM timer which can be externally trigered on edge. Perfect for
> that purpose. But I cannot pinmux its input as hw designers did poor job.
> And there are thousands of devices deployed.
>
> So it is about a lot of soldering or providing software solution.
>
> > Anyway, good luck!
>
> A little pointer would increase "luck" by several order of magnitudes.
Hmm did you already try limiting cpuidle to C1 only in /sys?
>From what I recall you just set the latency to less than C2
has. The cpuidle latencies are in struct omap3_idle_statedata
omap3_idle_data[].
Regards,
Tony
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next prev parent reply other threads:[~2017-11-28 14:11 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 [this message]
[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
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
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