From mboxrd@z Thu Jan 1 00:00:00 1970 From: Pavel Machek Subject: Re: [PATCH v8 2/4] fpga manager: add sysfs interface document Date: Fri, 9 Jan 2015 21:56:44 +0100 Message-ID: <20150109205643.GA5761@amd> References: <1420575219-27061-1-git-send-email-atull@opensource.altera.com> <1420575219-27061-3-git-send-email-atull@opensource.altera.com> <20150107084819.GA1887@amd> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Return-path: Content-Disposition: inline In-Reply-To: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: driverdev-devel-bounces@linuxdriverproject.org Sender: "devel" To: atull Cc: mark.rutland@arm.com, linux-doc@vger.kernel.org, rubini@gnudd.com, pantelis.antoniou@konsulko.com, hpa@zytor.com, s.trumtrar@pengutronix.de, devel@driverdev.osuosl.org, sameo@linux.intel.com, nico@linaro.org, ijc+devicetree@hellion.org.uk, michal.simek@xilinx.com, kyle.teske@ni.com, jgunthorpe@obsidianresearch.com, grant.likely@linaro.org, davidb@codeaurora.org, linus.walleij@linaro.org, cesarb@cesarb.net, devicetree@vger.kernel.org, jason@lakedaemon.net, pawel.moll@arm.com, iws@ovro.caltech.edu, broonie@kernel.org, philip@balister.org, dinguyen@opensource.altera.com, monstr@monstr.eu, gregkh@linuxfoundation.org, yvanderv@opensource.altera.com, linux-kernel@vger.kernel.org, balbi@ti.com, delicious.quinoa@gmail.com, robh+dt@kernel.org, rob@landley.net, galak@codeaurora.org, akpm@linux-foundation.org, davem@davemloft.net, m.chehab@samsung.com List-Id: devicetree@vger.kernel.org On Fri 2015-01-09 13:14:24, atull wrote: > On Wed, 7 Jan 2015, Pavel Machek wrote: > > > On Tue 2015-01-06 14:13:37, atull@opensource.altera.com wrote: > > > + > > > +What: /sys/class/fpga_manager//firmware > > > +Date: October 2014 > > > +KernelVersion: 3.18 > > > +Contact: Alan Tull > > > +Description: Name of the FPGA image file to load using firmware > > > class. > > > > This one is ugly: it unneccessarily passes firmware name through the > > kernel. Just make interface and code simpler by always passing > > "socfpga-fpga-image" or something like that. > > > > Thanks, > > Pavel > > Hi Pavel, > > It might be ugly. It's not unnecessary. Some uses of FPGAs involve > switching out the FPGA images dynamically under control of the userspace. Then configure udev to load right firmware for you, or ln -s image-i-want-now socfpga-fpga-image to select the one to read...? Pavel -- (english) http://www.livejournal.com/~pavelmachek (cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html