From: Mark Brown <broonie-yzvPICuk2AATkU/dhu1WVueM+bqZidxxQQ4Iyu8u01E@public.gmane.org>
To: Stephen Warren <swarren-3lzwWm7+Weoh9ZMKESR00Q@public.gmane.org>
Cc: Grant Likely
<grant.likely-s3s/WqlpOiPyB63q8FvJNQ@public.gmane.org>,
spi-devel-general-5NWGOfrQmneRv+LV9MX5uipxlwaOVQ5f@public.gmane.org,
Chris Boot <bootc-1Slo4GeK4H1eoWH0uzbU5w@public.gmane.org>,
linux-rpi-kernel-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r@public.gmane.org
Subject: Re: [PATCH] spi: add driver for BCM2835
Date: Wed, 6 Mar 2013 12:33:43 +0800 [thread overview]
Message-ID: <20130306043333.GB4896@opensource.wolfsonmicro.com> (raw)
In-Reply-To: <5136C5AB.7020301-3lzwWm7+Weoh9ZMKESR00Q@public.gmane.org>
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On Tue, Mar 05, 2013 at 09:27:23PM -0700, Stephen Warren wrote:
> On 03/05/2013 09:05 PM, Mark Brown wrote:
> > On Tue, Mar 05, 2013 at 07:49:02PM -0700, Stephen Warren wrote:
> >> +Optional properties: +- brcm,realtime: Boolean. Indicates the
> >> driver should operate with realtime + priority to minimise the
> >> transfer latency on the bus.
> > This isn't obviously something that ought to be in DT, it'll depend
> > on the OS, kernel version and so on. Indeed I don't think this is
> If that somehow accidentally snuck in, I can happily remove this feature.
Dunno, my call would be to remove it.
> >> wait_for_completion_timeout(&bs->done, +
> >> msecs_to_jiffies(BCM2835_SPI_TIMEOUT_MS)); + if (!timeout) { +
> >> err = -ETIMEDOUT; + goto out; + }
> > But I wanted to transfer 10G in a single message at 1kHz! :P
> I'm not sure what the solution is here; calculated timeout value, or
> no timeout?
Either that or just make sure that the timeout that's picked is very
high I guess.
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next prev parent reply other threads:[~2013-03-06 4:33 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-03-06 2:49 [PATCH] spi: add driver for BCM2835 Stephen Warren
[not found] ` <1362538142-19246-1-git-send-email-swarren-3lzwWm7+Weoh9ZMKESR00Q@public.gmane.org>
2013-03-06 4:05 ` Mark Brown
[not found] ` <20130306040520.GA4896-yzvPICuk2AATkU/dhu1WVueM+bqZidxxQQ4Iyu8u01E@public.gmane.org>
2013-03-06 4:27 ` Stephen Warren
[not found] ` <5136C5AB.7020301-3lzwWm7+Weoh9ZMKESR00Q@public.gmane.org>
2013-03-06 4:33 ` Mark Brown [this message]
2013-03-08 5:48 ` Stephen Warren
2013-03-08 6:12 ` Stephen Warren
[not found] ` <5139815E.7020502-3lzwWm7+Weoh9ZMKESR00Q@public.gmane.org>
2013-03-12 19:06 ` Mark Brown
2013-03-06 10:55 ` Jonas Gorski
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