From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from www.mw-itcon.de ([213.146.115.73]) by canuck.infradead.org with smtp (Exim 4.54 #1 (Red Hat Linux)) id 1EmRrv-00024D-Ht for linux-mtd@lists.infradead.org; Wed, 14 Dec 2005 03:20:19 -0500 Message-ID: <439FD5BF.1090507@mw-itcon.de> Date: Wed, 14 Dec 2005 09:20:15 +0100 From: Peter Menzebach MIME-Version: 1.0 To: colin References: <014601c5ffb6$24baa670$106215ac@realtek.com.tw> <439E8A77.8020400@mw-itcon.de> <01dc01c60057$1b3fab30$106215ac@realtek.com.tw> In-Reply-To: <01dc01c60057$1b3fab30$106215ac@realtek.com.tw> Content-Type: text/plain; charset=Big5 Content-Transfer-Encoding: 7bit Cc: linux-mtd@lists.infradead.org Subject: Re: Does Linux have serial flash drivers? List-Id: Linux MTD discussion mailing list List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , colin wrote: > Hi Peter, > I noticed this driver before. > But I think it is strnage that there are many serial Flash chips in the > world but there is no any corresponding mtd driver in Linux kernel source > tree. > What's the reason of this? > > Regards, > Colin Maybe, because most boards will then need 2 flashs with different interfaces. Afaik only the Atmel at91... can boot directly from serial dataflash due to it's internal ROM services. Even this seems to be not a mainstream way to boot, because the maintainer of the available bootloader (u-boot) declared that way to boot deprecated. In our case it was fine, because this allowed to reduce the size of the board. Another reason might be a hen/egg problem. (driver/first board available) Best regards Peter -- Peter Menzebach Menzebach und Wolff IT-Consulting GbR Phone +49 751 355 387 1