[U-Boot] [PATCH] rockchip: dts: rk3328: add aliases for mmc controller

[Mark Kettenis]

> From: Heiko Stuebner <heiko at sntech.de>
> Date: Tue, 23 May 2017 22:29:33 +0200
> 
> Hi Kever, Tom,
> 
> Am Dienstag, 23. Mai 2017, 14:32:44 CEST schrieb Kever Yang:
> >      This is not from kernel, seems the kernel mmc driver does not 
> > support aliases now,
> > 
> > thought I hope they both support the aliases for ordering.
> 
> there was a lengthy discussion about the pros and cons of ordering
> mmc devices last year [0].
> 
> With the outcome that explicit ordering via aliases is not desired
> and the argument being that mmc devices are not so different from
> usb storage or scsi/sata devices whose ordering is random all the time.

Aren't you intepreting the outcome of that discussion a bit too
broadly tough?  That discussion seems to reject an explicit ordering
of mmc device names in the Linux kernel, mainly because better
mechanisms exist to refer to a particular device than its device
name/number.  But that doesn't preclude having a meaningful set of
aliases for certain boards if there is some sort of canonical boot
order or if devices are actually numbered on a board?

In OpenFirmware the primary purpose of these aliases is to specify
which device to boot from.