From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp-out.bhp.t-online.de ([195.145.119.39]) by pentafluge.infradead.org with esmtp (Exim 4.14 #3 (Red Hat Linux)) id 19gMVw-0005gK-Va for ; Sat, 26 Jul 2003 11:43:01 +0100 Received: from ylva.bhp.t-online.de (ylva.ada.t-online.de [172.30.8.40]) 21 2002)) with SMTP id <0HIM00MK3OEUQ8@smtp-out.bhp.t-online.de> for linux-mtd@lists.infradead.org; Sat, 26 Jul 2003 12:42:30 +0200 (MEST) Date: Sat, 26 Jul 2003 13:39:13 +0200 From: Thomas Gleixner In-reply-to: To: "J.D. Bakker" , David Woodhouse Message-id: <200307261339.13142.tglx@linutronix.de> MIME-version: 1.0 Content-disposition: inline References: <1059148567.28255.47.camel@lapdancer.baythorne.internal> Content-type: text/plain; charset=iso-8859-1 Content-transfer-encoding: 7BIT cc: linux-mtd@lists.infradead.org Subject: Re: Handling multiple NAND chips Reply-To: tglx@linutronix.de List-Id: Linux MTD discussion mailing list List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , On Saturday 26 July 2003 12:22, J.D. Bakker wrote: > At 11:56 -0400 25-07-2003, David Woodhouse wrote: > >On Fri, 2003-07-25 at 11:51, J.D. Bakker wrote: > >> I have a two-hour old CVS; where should I look ? > > > Does it *help* to have separate data/CLE/ALE ? > > > >Probably not. What may help, and to be honest I won't be 100% sure till > >we actually come to implement it, is having separate FR/B# so you can > >happily poll for completion and leave multiple chips _busy_ > >independently. > > Polling should be possible through the Status Read command > (0x70/0x71) anyway, right ? Yep, that works always and you don't have to have seperate FR/B# lines. > Or would you want hardware to generate an > interrupt when any of the FR/B# lines change ? Hmmm... You can do this, but the question is, if it is really an advantage. -- Thomas ________________________________________________________________________ linutronix - competence in embedded & realtime linux http://www.linutronix.de mail: tglx@linutronix.de