Re: [PATCH v4 1/4] dt-bindings: connector: Add fsl,aud-io-slot binding

[Rob Herring <robh@kernel.org>]

On Thu, Nov 05, 2026 at 03:41:14PM +0900, Chancel Liu wrote:
> From: Chancel Liu <chancel.liu@nxp.com>
> 
> The NXP AUD-IO slot represents a physically present I/O connector on
> the base board. It acts as a nexus that exposes a constrained set of
> I/O resources, such as GPIOs, clocks and interrupts, through fixed
> electrical wiring. All actual hardware providers reside on the base
> board. The connector node only defines index-based mappings to those
> providers.
> 
> This connector type is present on i.MX95 19x19 EVK and i.MX952 EVK,
> where it is used to attach the IMX-AUD-IO audio expansion card[1]. The
> same add-on board can be reused across different base boards that carry
> this connector.
> 
> [1]https://www.nxp.com/part/IMX-AUD-IO

That link is pretty much useless. Is there a pinout definition 
somewhere?

Looking at the overlay, this looks incomplete. It looks like there's I2C 
thru the connector for example. There's also power rails.

The idea with connectors is that overlays apply to the connector node 
and nothing else.

I2C we've kind of figured out with something like this:

connector {
  i2c-parent = <&i2c>;
  i2c {
    ...
  };
};

Regulators is still open issue though.

Rob