linux-kernel - Re: [PATCH 2/2] misc: Add initial Digital Timing Engine (DTE) driver for cygnus

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Message-ID: <20150521063303.GA1558@localhost.localdomain>
Date:	Thu, 21 May 2015 08:33:03 +0200
From:	Richard Cochran <richardcochran@...il.com>
To:	Jonathan Richardson <jonathar@...adcom.com>
Cc:	Arnd Bergmann <arnd@...db.de>,
	Darren Edamura <dedamura@...adcom.com>,
	One Thousand Gnomes <gnomes@...rguk.ukuu.org.uk>,
	Scott Branden <sbranden@...adcom.com>,
	Pawel Moll <pawel.moll@....com>,
	Ian Campbell <ijc+devicetree@...lion.org.uk>,
	Ray Jui <rjui@...adcom.com>,
	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	linux-kernel@...r.kernel.org, devicetree@...r.kernel.org,
	Rob Herring <robh+dt@...nel.org>,
	bcm-kernel-feedback-list@...adcom.com,
	Kumar Gala <galak@...eaurora.org>,
	Mark Rutland <mark.rutland@....com>,
	linux-arm-kernel@...ts.infradead.org
Subject: Re: [PATCH 2/2] misc: Add initial Digital Timing Engine (DTE) driver
 for cygnus

On Wed, May 20, 2015 at 04:38:02PM -0700, Jonathan Richardson wrote:
> 
> Richard, this design isn't going to work. We need to have both kernel
> and user space consumers.

But you did not implement even a single kernel consumer.

> We don't want all GPIO's in a common timestamp
> buffer either, as it presents problems I mentioned previously. Currently
> the network input is a gpio.

That won't work.  Consider what happens when the MAC drops a packet.

> After some discussion here I think we'll
> have to keep this driver out of the kernel for now.

Fine with me.

Thanks,
Richard
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