Re: [PATCH 1/2] extcon: extcon-dra7xx: Add extcon driver for USBID detection

[George Cherian]

Hi Stephen,

On 8/20/2013 10:23 PM, Stephen Warren wrote:
> > >ID pins are connected to pcf8575, and the pcf8575's interrupt line is
> > >inturn connected to
> > >gpio bank6 pin 11, we use this gpio interrupt to detect the ID pin change.
> In that case, the PCF8575 node needs to be a GPIO controller and an IRQ
> controller, as does the driver for the PCF8575. This binding should have
> a single entry in the gpios property, and the driver can call
> gpio_to_irq() on that so it knows which IRQ to request.

You meant some thing like this?

       pcf_usb: pcf8575@21 {
                compatible = "ti,pcf8575";
                reg = <0x21>;
                gpio-controller;
                #gpio-cells = <2>;
                interrupt-parent = <&gpio6>;
                interrupts = <11 2>;
                interrupt-controller;
                #interrupt-cells = <2>;
        };

	 usb_vid_gpio {
                compatible = "ti,dra7xx-usb";
                gpios = <&pcf_usb 1 0>;
             
        };


--
-George

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