[U-Boot] [PATCH] command "sspi": add write-only flag '.w' (discard read data)

[Detlev Zundel <dzu@denx.de>]

Hi Mike,

[...]

>> Following the common U-Boot way to do this, I'd suggest
>> 	sspi [<bus>:]<cs>[.<mode>] <bit_len> <dout> [din_env_var]
>> and either never print the read result to the console (my favorite) or
>> only if no env variable to store is passed. To be defined, comments
>> welcome.
>
> is this the common u-boot approach ?  seems like extending every random func 
> to take a supplementary env var is the wrong way.  if the hush shell simply 
> supported syntax like:
> 	foo="`sspi ......`"
> then every command would get this for free

Indeed - this would be the best solution and I would greatly appreciate
such a feature as it would be a big step in what we can script
(elegantly) in U-Boot.

Cheers
  Detlev

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