Dear Jim Lin,

In message <4b9c9637d5087840a465bdcb251780e9e2d6eda...@hkmail02.nvidia.com> you 
wrote:
> Add support for command line "usb reset" or "usb start" to initialize
> , "usb stop" to stop multiple USB controllers at once.
> Other commands like "usb tree" also support multiple controllers.

Why would this be needed?

U-Boot is not multi-tasking, so you can always access only a single
USB device at a time ayway.  And it is a decoumented design principle
that U-Boot must not initialize any devices it does not use itself.

So why?

Best regards,

Wolfgang Denk

-- 
DENX Software Engineering GmbH,     MD: Wolfgang Denk & Detlev Zundel
HRB 165235 Munich, Office: Kirchenstr.5, D-82194 Groebenzell, Germany
Phone: (+49)-8142-66989-10 Fax: (+49)-8142-66989-80 Email: w...@denx.de
A failure will not appear until a unit has passed final inspection.
_______________________________________________
U-Boot mailing list
U-Boot@lists.denx.de
http://lists.denx.de/mailman/listinfo/u-boot

Reply via email to