linux-kernel - Re: [PATCHv3] drivers/misc: Altera active serial implementation

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Message-ID: <4CE48C3A.2050506@zytor.com>
Date:	Wed, 17 Nov 2010 18:15:22 -0800
From:	"H. Peter Anvin" <hpa@...or.com>
To:	Thomas Chou <thomas@...ron.com.tw>
CC:	lkml <linux-kernel@...r.kernel.org>,
	Baruch Siach <baruch@...s.co.il>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Indan Zupancic <indan@....nu>, Greg KH <greg@...ah.com>,
	Alex Gershgorin <agersh@...bler.ru>,
	Alan Cox <alan@...rguk.ukuu.org.uk>,
	Jiri Slaby <jslaby@...e.cz>,
	Nios2 development list <nios2-dev@...c.et.ntust.edu.tw>
Subject: Re: [PATCHv3] drivers/misc: Altera active serial implementation

On 11/17/2010 06:15 PM, Thomas Chou wrote:
> 
> EPCS16 = M25P16
> EPCS64 = M25P64
> 
> Yes, EPCS is ONLY serial flash. The Altera EPCS controller is only SPI 
> controller. It is well-known on Altera wiki and Altera forum.
> 
> You may use any stock SPI flash to replace EPCS as long as the access 
> time met. Though Altera flash programming utility supports only limited 
> brands, more SPI flash can be programmed using u-boot or Linux MTD. We 
> often boot right out of SPI/EPCS, as it saves cost and space.
> 
> There is no difference between Altera and Xilinx in this aspect, except 
> for their marketing approach.
> 

OK, that's rather funny.

	-hpa
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