Message-ID: <524C6D64.8080801@zytor.com>
Date: Wed, 02 Oct 2013 12:00:52 -0700
From: "H. Peter Anvin" <hpa@zytor.com>
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To: Michal Simek <michal.simek@xilinx.com>
CC: linux-kernel@vger.kernel.org, monstr@monstr.eu,
        Alan Tull <atull@altera.com>, Pavel Machek <pavel@ucw.cz>,
        Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
        Dinh Nguyen <dinguyen@altera.com>,
        Philip Balister <philip@balister.org>,
        Alessandro Rubini <rubini@gnudd.com>,
        Steffen Trumtrar <s.trumtrar@pengutronix.de>,
        Jason Gunthorpe <jgunthorpe@obsidianresearch.com>,
        Jason Cooper <jason@lakedaemon.net>,
        Yves Vandervennet <rocket.yvanderv@gmail.com>,
        Kyle Teske <kyle.teske@ni.com>, Josh Cartwright <joshc@eso.teric.us>,
        Nicolas Pitre <nico@linaro.org>,
        Mark Langsdorf <mark.langsdorf@calxeda.com>,
        Felipe Balbi <balbi@ti.com>, linux-doc@vger.kernel.org,
        Mauro Carvalho Chehab <m.chehab@samsung.com>,
        David Brown <davidb@codeaurora.org>, Rob Landley <rob@landley.net>,
        "David S. Miller" <davem@davemloft.net>, Joe Perches <joe@perches.com>,
        Cesar Eduardo Barros <cesarb@cesarb.net>,
        Samuel Ortiz <sameo@linux.intel.com>,
        Andrew Morton <akpm@linux-foundation.org>
Subject: Re: [RFC PATCH v2 0/1] FPGA subsystem core
References: <cover.1380727889.git.michal.simek@xilinx.com>
In-Reply-To: <cover.1380727889.git.michal.simek@xilinx.com>
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On 10/02/2013 08:35 AM, Michal Simek wrote:
> 
> Based on my discussion at ELC with Greg KH the new driver should
> support firmware interface for loading bitstream.
> 

As I have previously stated, I think this is a mistake simply because
the firmware interface is a bad mapping on requirements for an FPGA,
especially once you account for the vast number of ways an FPGA can
get loaded and you take partial reconfiguration into account.  I
happen to be at a face to face meeting with Greg today, so I'll pick
his brain a bit.

	-hpa


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