[RFC PATCH v3 2/5] pinctrl: add dt binding support for pinmux mappings

[Stephen Warren]

Shawn Guo wrote at Tuesday, January 10, 2012 6:05 AM:
> On Tue, Jan 10, 2012 at 08:21:05AM +0000, Dong Aisheng-B29396 wrote:
> > Here what I wonder is that do we need to allow the platform to use a func-name
> > property in their pinmux func node or pinmux group node to specify the name.
> 
> I do not see the necessity.
> 
> > If it is allowed, then it could be flexible for soc to define their names.
> > If not there may be limitations on their node names since we can only get it from
> > the node name.
> 
> To me, the node name is perfectly fine to be used for that purpose.

I'd prefer if we could use integers over strings if at all possible, but
that does have a dependency on dtc getting a syntax to define named
constants, or the kernel pre-processing the .dts files before passing
them to dtc.

But if we have to use strings, I will point out that the pin names I
chose for Tegra may not be suitable as DT node names; I don't /think/
the DT node names can contain spaces, but I chose to name the Tegra
pinctrl pins after both their pin name and GPIO name so that it's
easier to correlate the two:

        PINCTRL_PIN(TEGRA_PIN_SDIO3_CLK_PA6, "SDIO3_CLK PA6"),

Now, I could change that, but I'd prefer not to.

-- 
nvpublic