[PATCH 1/2] ARM:MX28: Add additionnal muxing options to iMX28 DTSI

[Shawn Guo]

On Tue, Jun 26, 2012 at 11:42:44AM +0200, Maxime Ripard wrote:
> I have two questions here though.
> 
> First, I'm worrying a bit about the fact that the duart_pins_b is
> actually the first pin groups in the muxing selection register by index,
> before duart_pins_a. It's a bit confusing, but it would imply that we
> would need to rename duart_pins_a to duart_pins_b, and change all the
> references to it as well, but I can definitely send a patch for it. What
> is your opinion ?
> 
The numbering of mux options for a function is not meant to match the
register index in any case.  Actually, it's no way to match.  For
example, if pin pair <0x3102 0x3032> is used on one board, how would
you number it?  (Well, the example is odd but it's possible.)

> Secondly, why do we need to change the reg field as well ?
> 
We need to use the same node name "duart" for pin groups that are
mux-ed on duart function.  "reg" value is used to distinguish the node
name, as the "reg" value is required to be part of node name.

-- 
Regards,
Shawn