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From: Huang Shijie <b32955@freescale.com>
To: "Mingkai.Hu@freescale.com" <Mingkai.Hu@freescale.com>
Cc: "vivien.didelot@savoirfairelinux.com"
	<vivien.didelot@savoirfairelinux.com>,
	"linux-spi@vger.kernel.org" <linux-spi@vger.kernel.org>,
	Mark Brown <broonie@kernel.org>,
	"linux-mtd@lists.infradead.org" <linux-mtd@lists.infradead.org>,
	Brian Norris <computersforpeace@gmail.com>,
	"dwmw2@infradead.org" <dwmw2@infradead.org>
Subject: Re: Support of Micron SPI flash (size > 16MB)
Date: Fri, 16 May 2014 16:33:04 +0800	[thread overview]
Message-ID: <5375CD40.6060903@freescale.com> (raw)
In-Reply-To: <86bc6bed6ec74c8c8fc3d0e929baee48@BY2PR03MB508.namprd03.prod.outlook.com>

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

WARNING: multiple messages have this Message-ID (diff)
From: Huang Shijie <b32955-KZfg59tc24xl57MIdRCFDg@public.gmane.org>
To: "Mingkai.Hu-KZfg59tc24xl57MIdRCFDg@public.gmane.org"
	<Mingkai.Hu-KZfg59tc24xl57MIdRCFDg@public.gmane.org>
Cc: Brian Norris
	<computersforpeace-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>,
	Mark Brown <broonie-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org>,
	"linux-mtd-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r@public.gmane.org"
	<linux-mtd-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r@public.gmane.org>,
	"linux-spi-u79uwXL29TY76Z2rM5mHXA@public.gmane.org"
	<linux-spi-u79uwXL29TY76Z2rM5mHXA@public.gmane.org>,
	"dwmw2-wEGCiKHe2LqWVfeAwA7xHQ@public.gmane.org"
	<dwmw2-wEGCiKHe2LqWVfeAwA7xHQ@public.gmane.org>,
	"vivien.didelot-4ysUXcep3aM1wj+D4I0NRVaTQe2KTcn/@public.gmane.org"
	<vivien.didelot-4ysUXcep3aM1wj+D4I0NRVaTQe2KTcn/@public.gmane.org>
Subject: Re: Support of Micron SPI flash (size > 16MB)
Date: Fri, 16 May 2014 16:33:04 +0800	[thread overview]
Message-ID: <5375CD40.6060903@freescale.com> (raw)
In-Reply-To: <86bc6bed6ec74c8c8fc3d0e929baee48-+7O3WWA3DPtW9KZzDT5qz+O6mTEJWrR4XA4E9RH9d+qIuWR1G4zioA@public.gmane.org>

于 2014年05月16日 16:15, Mingkai.Hu-KZfg59tc24xl57MIdRCFDg@public.gmane.org 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
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  reply	other threads:[~2014-05-16  8:31 UTC|newest]

Thread overview: 12+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
     [not found] <92977332ffca4669b5c1987b42b0d0c5@BY2PR03MB508.namprd03.prod.outlook.com>
2014-05-09 10:44 ` Support of Micron SPI flash (size > 16MB) Mark Brown
2014-05-09 10:44   ` Mark Brown
2014-05-16  6:18   ` Brian Norris
2014-05-16  6:18     ` Brian Norris
2014-05-16  8:15     ` Mingkai.Hu
2014-05-16  8:15       ` Mingkai.Hu-KZfg59tc24xl57MIdRCFDg
2014-05-16  8:33       ` Huang Shijie [this message]
2014-05-16  8:33         ` Huang Shijie
2014-05-16  9:54         ` Mingkai.Hu
2014-05-16  9:54           ` Mingkai.Hu-KZfg59tc24xl57MIdRCFDg
2014-05-16  7:50   ` Mingkai.Hu
2014-05-16  7:50     ` Mingkai.Hu-KZfg59tc24xl57MIdRCFDg

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