From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from web30205.mail.mud.yahoo.com ([209.191.69.52]) by canuck.infradead.org with smtp (Exim 4.72 #1 (Red Hat Linux)) id 1Q37bZ-0001Zu-J3 for linux-mtd@lists.infradead.org; Fri, 25 Mar 2011 14:03:10 +0000 Message-ID: <759739.22764.qm@web30205.mail.mud.yahoo.com> Date: Fri, 25 Mar 2011 07:03:07 -0700 (PDT) From: Lars Michael Subject: Re: NAND device: all blocks bad after restart, how to recover? To: dedekind1@gmail.com In-Reply-To: <1299762378.6676.7.camel@localhost> MIME-Version: 1.0 Content-Type: text/plain; charset=iso-8859-1 Content-Transfer-Encoding: quoted-printable Cc: linux-mtd@lists.infradead.org List-Id: Linux MTD discussion mailing list List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , =0A=0A--- On Thu, 10/3/11, Artem Bityutskiy wrote:=0A= =0A> From: Artem Bityutskiy =0A> Subject: Re: NAND dev= ice: all blocks bad after restart, how to recover?=0A> To: "Lars Michael" <= lars.michael@yahoo.com>=0A> Cc: linux-mtd@lists.infradead.org=0A> Date: Thu= rsday, 10 March, 2011, 14:06=0A> On Wed, 2011-03-09 at 08:39 -0800,=0A> Lar= s Michael wrote:=0A> > Hello,=0A> > =0A> > I repost this issue, with correc= t subject and hope to=0A> have some=0A> > feedback. After working with gett= ing UBI images=0A> mounted in Linux (it did=0A> > work for a sec!) the NAND= device suddenly went totally=0A> bad after a system=0A> > restart! So all = blocks are reported bad and the mtd is=0A> no longer visible=0A> > in Linux= .=0A> =0A> So do mtd tests work fine with your flash?=0A> =0A> >=A0 Before = it had just a few bad blocks.=0A> =0A=0AWe investigated more and have found= that the FlexBus on the Coldfire can cause problems for the NAND device. W= hen the FlexBus devices are removed=0Athe NAND device comes back to life, a= nd is again accessible. So now I =0Acan get back to the UBI part of the pro= ject :-)=0A=0ARegards,=0A- Lars