linux-kernel - Re: [PATCH v2 2/3] ARM: dts: socfpga: fpga bridges bindings docs

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Message-ID: <alpine.DEB.2.02.1410281651490.11910@atx-linux-37>
Date:	Tue, 28 Oct 2014 16:53:47 -0500
From:	atull <atull@...nsource.altera.com>
To:	Steffen Trumtrar <s.trumtrar@...gutronix.de>
CC:	<jgunthorpe@...idianresearch.com>, <hpa@...or.com>,
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Subject: Re: [PATCH v2 2/3] ARM: dts: socfpga: fpga bridges bindings docs

On Tue, 28 Oct 2014, atull wrote:

> On Fri, 24 Oct 2014, Steffen Trumtrar wrote:

> > 
> > > + - init-val       : 0 if driver should disable bridge at startup
> > > +                    1 if driver should enable bridge at startup
> > > +                    driver leaves bridge in current state if property not
> > > +                    specified.
> > > +
> > 
> > Configuration in the DT? Really?

The FPGA can be programmed by several different methods (eeprom, jtag,
preloader, Linux).  The guiding principle is: whoever programmed the
FPGA should release the bridge.  At one point, we thought 'init-val'
would be needed, but I think it can be taken out and we won't miss it.

Alan
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