I2C generic device
==================

This is used only to generate ACPI tables for an I2C device.

Required properties :

 - compatible : "i2c-chip";
 - reg : I2C chip address
 - acpi,hid : HID name for the device

Optional properies in addition to device.txt:

 - reset-gpios : GPIO used to assert reset to the device
 - irq-gpios : GPIO used for interrupt (if Interrupt is not used)
 - stop-gpios : GPIO used to stop the device
 - interrupts-extended : Interrupt to use for the device
 - reset-delay-ms : Delay after de-asserting reset, in ms
 - reset-off-delay-ms : Delay after asserting reset (during power off)
 - enable-delay-ms : Delay after asserting enable
 - enable-off-delay-ms : Delay after de-asserting enable (during power off)
 - stop-delay-ms : Delay after de-aserting stop
 - stop-off-delay-ms : Delay after asserting stop (during power off)
 - hid-descr-addr : HID register offset (for Human Interface Devices)

Example
-------

	elan-touchscreen@10 {
		compatible = "i2c-chip";
		reg = <0x10>;
		acpi,hid = "ELAN0001";
		acpi,ddn = "ELAN Touchscreen";
		interrupts-extended = <&acpi_gpe GPIO_21_IRQ
			IRQ_TYPE_EDGE_FALLING>;
		linux,probed;
		reset-gpios = <&gpio_n GPIO_36 GPIO_ACTIVE_HIGH>;
		reset-delay-ms = <20>;
		enable-gpios = <&gpio_n GPIO_152 GPIO_ACTIVE_HIGH>;
		enable-delay-ms = <1>;
		acpi,has-power-resource;
	};