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    SubjectRe: Pinmux bindings proposal
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    On 18 January 2012 22:13, Tony Lindgren <tony@atomide.com> wrote:
    > Hi,
    >
    > * Grant Likely <grant.likely@secretlab.ca> [120116 09:55]:
    >> On Fri, Jan 13, 2012 at 12:39:42PM -0800, Stephen Warren wrote:
    >> >                 pinmux =
    >> >                         <"default" &pmx_sdhci_active>
    >> >                         <"suspend" &pmx_sdhci_suspend>;
    >> >
    >> >                 /* 1:n example: */
    >> >                 pinmux =
    >> >                         <"default" &pmx_sdhci_mux_a>
    >> >                         <"default" &pmx_sdhci_pincfg_a>
    >> >                         <"suspend" &pmx_sdhci_mux_a>
    >> >                         <"suspend" &pmx_sdhci_pincfg_a_suspend>;
    >>
    >>
    >> Yeah, don't do this.  Mixing phandle, string and cell values in a
    >> property gets messy and could become troublesome to parse.  I've
    >> backed away from it in the clk binding.
    >
    > Yup, that's because the string is embedded directly into the mixed
    > mode array and will likely make the following data unaligned. That
    > means it's extremely flakey to parse, and will lead into horrible
    > errors if you have typos in the .dts file.. Tried that and gave up
    > on it.
    >
    > I think I've found a way to avoid using names at all, assuming we set
    > each pin as a phandle for the drivers to use :)
    >
    The problem with doing that is we will have to represent each pin as a
    node in device tree. For imx6q case, we have 197 pins. Doing so will
    bloat the device tree.

    --
    Regards,
    Shawn
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