[U-Boot-Users] [patch] add support for "eeprom info"

[Mike Frysinger]

On Wednesday 23 January 2008, Wolfgang Denk wrote:
> In message <200801231729.18316.vapier at gentoo.org> you wrote:
> > with eeprom_info behind CONFIG_SPI.  most SPI flashes nowadays support
> > the jedec id command which allows for dynamic detection (which is how the
> > Blackfin SPI driver that i wrote works).  hook up any SPI flash and it
> > "just works".
>
> I think you are doing something wrong when you try to use "eeprom" to
> access "SPI flash" - these are differnt entities...

let's make sure we're talking about the same thing.  SPI flashes are eeproms 
that have a SPI interface.  so Spansion's S25FLxxxx, ST's m25pxtmels 
AT45DBxxxx, Winbond's W25Xxx/W25Pxx, and such.  they need to be erased before 
writing, are split up into some unit size, etc...  all SPI flashes nowadays 
conform to the JEDEC standard (JEP106) which allows for querying of 
manufacturer/device ids so that they can be dynamically detected.  sounds to 
me like "eeprom" is the correct interface for utilizing these devices.
-mike
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