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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