Re: [PATCH v3 3/3] ARM: dts: dra7-evm: Add extcon nodes for USB ID pin detection

[Stephen Warren <swarren@wwwdotorg.org>]

On 08/28/2013 11:33 AM, George Cherian wrote:
> Add
> 	-extcon nodes for USB ID pin detection.
> 	-i2c nodes.
> 	-pcf nodes to which USB ID pin is connected.

> diff --git a/arch/arm/boot/dts/dra7-evm.dts b/arch/arm/boot/dts/dra7-evm.dts

>  &dwc3_1 {
> -	dr_mode = "otg";
> +	dr_mode = "host";
>  };

I wonder why one cares about ID/VBUS detection if the port doesn't
operate in OTG mode?

>  &dwc3_2 {
>  	dr_mode = "host";
>  };
> +
> +&usb1 {
> +	extcon = <&extcon1>;
> +};
> +
> +&usb2 {
> +	extcon = <&extcon2>;
> +};

I assume the "extcon" property is already fully documented in the
binding for the USB controller? For some reason, "extcon" looks like an
odd property name; I would have expected something more HW-oriented that
Linux-subsystem-oriented, such as "connector", or "usb-connector".