linux-kernel - Re: [PATCH 1/1] [MTD/NAND]: Add Blackfin BF52x on-chip NAND Flash controller driver support in bf5xx

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Date:	Fri, 23 Nov 2007 13:52:12 -0800
From:	Arjan van de Ven <arjan@...radead.org>
To:	"Bryan Wu" <cooloney.lkml@...il.com>
Cc:	"David Woodhouse" <dwmw2@...radead.org>,
	"Bryan Wu" <bryan.wu@...log.com>, linux-mtd@...ts.infradead.org,
	linux-kernel@...r.kernel.org,
	uclinux-dist-devel@...ckfin.uclinux.org,
	"Michael Hennerich" <michael.hennerich@...log.com>
Subject: Re: [PATCH 1/1] [MTD/NAND]: Add Blackfin BF52x on-chip NAND Flash
 controller driver support in bf5xx_nand driver

On Fri, 23 Nov 2007 22:25:29 +0800
"Bryan Wu" <cooloney.lkml@...il.com> wrote:

> On Nov 23, 2007 6:19 PM, David Woodhouse <dwmw2@...radead.org> wrote:
> >
> > On Fri, 2007-11-23 at 18:14 +0800, Bryan Wu wrote:
> > >
> > > +#ifdef CONFIG_BF54x
> > >         /* Setup DMAC1 channel mux for NFC which shared with SDH
> > > */ val = bfin_read_DMAC1_PERIMUX();
> > >         val &= 0xFFFE;
> > >         bfin_write_DMAC1_PERIMUX(val);
> > >         SSYNC();
> > > -
> > > +#endif
> >
> > You can't build a multiplatform kernel which runs on BF52x and
> > BF54x?
> 
> There are some hardware difference between BF52x and BF54x. We have
> to do this.
> 

well does it need to be an #ifdef, or can it be a runtime if() ?

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