[U-Boot] [U-BOOT] [PATCH] mmc: enable switch partition function

[Wolfgang Denk]

Dear Lei Wen,

In message <BANLkTikWwbbuNyHppQQygZ3JDh4aXUg3NA at mail.gmail.com> you wrote:
> 
> > Why don't you follow the existing examples from other storage devices,
> > where we have a "dev" subcommand that allows to select one of the
> > existing devices as "active" device? =A0Similarly, you could here select
> > an active device/partition pair.
> 
> dev subcommand to act as "sw_part" in my first patch?

I'm not really sure I understand what this command was supposed to do.
What I want to see is consistency with other drivers, i. e. you should
be able to use "mmc dev" to select a device and optionally a partition
on it as current device, so the remaining "mmc" commands do not need
any device arguments any more.

> How about this solution?
> Like if want to access the dev 0 and hardware partition 1, we could use the
> command as "mmc read 0:1 ***".
> If not pass the :[part] parameter to the dev number, like "mmc read 0 ***",
> that would means the partition is 0 by default. For this case, if that device
> has no capabilty of multi hardware partition, it would act like normal, or
> switch to the default 0 before any further action.

I want to get rid of the device argument in all these calls.

Best regards,

Wolfgang Denk

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