From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-by2lp0240.outbound.protection.outlook.com ([207.46.163.240] helo=na01-by2-obe.outbound.protection.outlook.com) by bombadil.infradead.org with esmtps (Exim 4.80.1 #2 (Red Hat Linux)) id 1WlDXm-0007eU-1V for linux-mtd@lists.infradead.org; Fri, 16 May 2014 08:31:06 +0000 Message-ID: <5375CD40.6060903@freescale.com> Date: Fri, 16 May 2014 16:33:04 +0800 From: Huang Shijie MIME-Version: 1.0 To: "Mingkai.Hu@freescale.com" Subject: Re: Support of Micron SPI flash (size > 16MB) References: <92977332ffca4669b5c1987b42b0d0c5@BY2PR03MB508.namprd03.prod.outlook.com> <20140509104404.GK12304@sirena.org.uk> <20140516061856.GD2413@norris-Latitude-E6410> <86bc6bed6ec74c8c8fc3d0e929baee48@BY2PR03MB508.namprd03.prod.outlook.com> In-Reply-To: <86bc6bed6ec74c8c8fc3d0e929baee48@BY2PR03MB508.namprd03.prod.outlook.com> Content-Type: text/plain; charset="GB2312" Content-Transfer-Encoding: 8bit Cc: "vivien.didelot@savoirfairelinux.com" , "linux-spi@vger.kernel.org" , Mark Brown , "linux-mtd@lists.infradead.org" , Brian Norris , "dwmw2@infradead.org" List-Id: Linux MTD discussion mailing list List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , 于 2014年05月16日 16:15, Mingkai.Hu@freescale.com 写道: > Another question is for erase and program command. From the datasheet, not only the WTITE > ENABLE command need to be issued before the command can be executed, but also a special > READ FLAG STATUS RESISTER command need to be issued after the erase/program command which > is not implemented in the upstream code. We implement the READ flag operation and erase > can work, but write still fail. > > I saw somebody has added the Micron larger SPI flash (>16Mb) support, so I'd like to know > if they run into such issue. Yes, we have noticed this issue: Please see this patch: http://lists.infradead.org/pipermail/linux-mtd/2014-April/053571.html thanks Huang Shijie From mboxrd@z Thu Jan 1 00:00:00 1970 From: Huang Shijie Subject: Re: Support of Micron SPI flash (size > 16MB) Date: Fri, 16 May 2014 16:33:04 +0800 Message-ID: <5375CD40.6060903@freescale.com> References: <92977332ffca4669b5c1987b42b0d0c5@BY2PR03MB508.namprd03.prod.outlook.com> <20140509104404.GK12304@sirena.org.uk> <20140516061856.GD2413@norris-Latitude-E6410> <86bc6bed6ec74c8c8fc3d0e929baee48@BY2PR03MB508.namprd03.prod.outlook.com> Mime-Version: 1.0 Content-Type: text/plain; charset=GB2312 Content-Transfer-Encoding: QUOTED-PRINTABLE Cc: Brian Norris , Mark Brown , "linux-mtd-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r@public.gmane.org" , "linux-spi-u79uwXL29TY76Z2rM5mHXA@public.gmane.org" , "dwmw2-wEGCiKHe2LqWVfeAwA7xHQ@public.gmane.org" , "vivien.didelot-4ysUXcep3aM1wj+D4I0NRVaTQe2KTcn/@public.gmane.org" To: "Mingkai.Hu-KZfg59tc24xl57MIdRCFDg@public.gmane.org" Return-path: In-Reply-To: <86bc6bed6ec74c8c8fc3d0e929baee48-+7O3WWA3DPtW9KZzDT5qz+O6mTEJWrR4XA4E9RH9d+qIuWR1G4zioA@public.gmane.org> Sender: linux-spi-owner-u79uwXL29TY76Z2rM5mHXA@public.gmane.org List-ID: =D3=DA 2014=C4=EA05=D4=C216=C8=D5 16:15, Mingkai.Hu-KZfg59tc24xl57MIdRCFDg@public.gmane.org =D0=B4= =B5=C0: > Another question is for erase and program command. From the datasheet= , not only the WTITE > ENABLE command need to be issued before the command can be executed, = but also a special > READ FLAG STATUS RESISTER command need to be issued after the erase/p= rogram command which > is not implemented in the upstream code. We implement the READ flag o= peration and erase > can work, but write still fail. > > I saw somebody has added the Micron larger SPI flash (>16Mb) support,= so I'd like to know > if they run into such issue. Yes, we have noticed this issue: Please see this patch: http://lists.infradead.org/pipermail/linux-mtd/2014-April/053571.html thanks Huang Shijie -- To unsubscribe from this list: send the line "unsubscribe linux-spi" in the body of a message to majordomo-u79uwXL29TY76Z2rM5mHXA@public.gmane.org More majordomo info at http://vger.kernel.org/majordomo-info.html