linux-kernel - Re: [PATCH 13/15] MTD: add few workarounds to nand system for SmartMedia/xD chips.

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Date:	Tue, 23 Feb 2010 00:12:29 +0200
From:	Maxim Levitsky <maximlevitsky@...il.com>
To:	Thomas Gleixner <tglx@...utronix.de>
Cc:	David Woodhouse <dwmw2@...radead.org>,
	linux-mtd <linux-mtd@...ts.infradead.org>,
	linux-kernel <linux-kernel@...r.kernel.org>,
	Alex Dubov <oakad@...oo.com>, joern <joern@...fs.org>,
	stanley.miao@...driver.com, Vitaly Wool <vitalywool@...il.com>
Subject: Re: [PATCH 13/15] MTD: add few workarounds to nand system for
 SmartMedia/xD chips.

On Mon, 2010-02-22 at 22:53 +0100, Thomas Gleixner wrote: 
> On Mon, 22 Feb 2010, Maxim Levitsky wrote:
> 
> > On Mon, 2010-02-22 at 22:25 +0100, Thomas Gleixner wrote: 
> > > On Mon, 22 Feb 2010, Maxim Levitsky wrote:
> > > 
> > > > * Add an option NAND_SMARTMEDIA that can be set by nand driver
> > > >  If set, it will cause separate ID table to be used, which includes
> > > >  mask rom devices and new xD cards
> > > 
> > > Why that option ? We can just extend the existing ids table and be
> > > done. No extra magic needed.
> > >  
> > 
> > Two reasons.
> > 
> > First of all several xD chips (I belive the Type M) have exactly same
> > IDs like normal nand chips. However they don't report capabilities about
> > pagesize, blocksize, etc.

Sure, I didn't meant the #WP line. Sure it is set by the controller.
I mean WP bit in status report.

Best regards,
Maxim Levitsky


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