From: Carsten Behling <carsten.behling@ridgerun.com>
To: linux-usb@vger.kernel.org
Cc: balbi@ti.com, linux-kernel@vger.kernel.org
Subject: Re: usb: musb: Scheduling of interrupt endpoints
Date: Tue, 23 Dec 2014 08:59:39 -0600 [thread overview]
Message-ID: <5499835B.508@ridgerun.com> (raw)
In-Reply-To: <54947E99.4010908@ridgerun.com>
Would it help if I send a patch as a suggestion and as basis for discussion?
On 12/19/2014 01:38 PM, Carsten Behling wrote:
> Hi all,
>
> Long time ago, TI shipped a kernel named
> linux-2.6.32.17-psp03.01.01.39 with an additional kernel option
> for scheduling of interrupt endpoints.
>
> AFAIK, this seems to be the only possibility to attach more that 4 in
> endpoints to MUSB (at least on a DM368).
>
> This feature reserves one hardware endpoint unit to time schedule
> interrupt in endpoints based
> on its bInterval value triggered by the SOF interrupt.
>
> I didn't find any discussion about adding such a feature to the
> mainline kernel.
> IMHO, this feature is absolutely necessary. But there may be reasons,
> not to add it (e.g. CPU load).
>
> Please let me know your thoughts and ideas.
>
> Best regards
> -Carsten
>
next parent reply other threads:[~2014-12-23 14:59 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <54947E99.4010908@ridgerun.com>
2014-12-23 14:59 ` Carsten Behling [this message]
2014-12-23 18:27 ` usb: musb: Scheduling of interrupt endpoints Felipe Balbi
2014-12-23 20:16 ` Carsten Behling
2014-12-23 23:48 ` Felipe Balbi
2014-12-23 19:39 ` Carsten Behling
2014-12-23 23:50 ` Felipe Balbi
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