linux-kernel - Re: [PATCHv4] dmaengine: Add support for BCM2835

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Message-ID: <11018682.0TjgocUWod@flatron>
Date:	Thu, 14 Nov 2013 17:23:08 +0100
From:	Tomasz Figa <tomasz.figa@...il.com>
To:	Florian Meier <florian.meier@...lo.de>
Cc:	Stephen Warren <swarren@...dotorg.org>,
	Vinod Koul <vinod.koul@...el.com>,
	Dan Williams <dan.j.williams@...el.com>,
	Russell King - ARM Linux <linux@....linux.org.uk>,
	devicetree <devicetree@...r.kernel.org>,
	alsa-devel@...a-project.org, Liam Girdwood <lgirdwood@...il.com>,
	linux-kernel@...r.kernel.org, Mark Brown <broonie@...nel.org>,
	linux-rpi-kernel <linux-rpi-kernel@...ts.infradead.org>,
	dmaengine <dmaengine@...r.kernel.org>,
	linux-arm-kernel@...ts.infradead.org,
	Matt Porter <matt.porter@...aro.org>
Subject: Re: [PATCHv4] dmaengine: Add support for BCM2835

On Thursday 14 of November 2013 17:14:31 Florian Meier wrote:
> >> >> I am becoming desperate anyway that this migration will ever fully
> >> >> take place....
> >> >
> >> > Why not? It's just a matter of people like you working on this (and
> >> > addressing some review comments ;)).
> >>
> >> The most common comment about this is that people will not put effort in
> >> the upstream kernel as long as there is no comfortable way for debugging
> >> in the upstream kernel (i.e. at least USB support).......
> >
> > Right, you need USB to have ethernet working. Still, IMHO UART (for
> > console) + ethernet (for file transfer or NFS root) is the reasonable
> > setup allowing you to debug further drivers in a comfortable way.
> 
> I am fine with UART and switching SD cards :-)
> But apparently this is not generally accepted.

Still, isn't some work on USB support for RPi already going on? I believe
Matt Porter (now on Cc) has been working on unifying dwc2 host-mode
driver with Samsung s3c-hsotg device-mode driver (for the same IP) to
get full OTG support on all applicable platforms.

Best regards,
Tomasz

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