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

[Ben Warren]

Hey Mike,

Mike Frysinger wrote:
> 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...
>>     
>
> then what is the "correct" method ?  i dont see any other usable option in 
> u-boot for hooking up SPI flashes without writing my own subsystem.
> -mike
>   
Until recently SPI in U-boot was synonymous with 'SPI-based EEPROM'.  In 
fact, CONFIG_SPI doesn't mean 'configure support for a SPI controller', 
it means 'configure support for a SPI EEPROM'.  This is of course yet 
another artifact from another day that it would be nice to clean up.

I introduced CONFIG_HARD_SPI in the latest release cycle, and included a 
driver for a Freescale controller.  It would be nice to have other 
drivers added for generic SPI support.  My preference would be for you 
to expand the 'spi' command with something like:

'spi eeprom info'

regards,
Ben