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+GPIO Driver for XRA1403 16-BIT GPIO Expander With Reset Input from EXAR
+
+The XRA1403 is an 16-bit GPIO expander with an SPI interface. Features available:
+ - Individually programmable inputs:
+ - Internal pull-up resistors
+ - Polarity inversion
+ - Individual interrupt enable
+ - Rising edge and/or Falling edge interrupt
+ - Input filter
+ - Individually programmable outputs
+ - Output Level Control
+ - Output Three-State Control
+
+Properties
+----------
+Check documentation for SPI and GPIO controllers regarding properties needed to configure the node.
+
+ - compatible = "exar,xra1403".
+ - reg - SPI id of the device.
+ - gpio-controller - marks the node as gpio.
+ - #gpio-cells - should be two where the first cell is the pin number
+ and the second one is used for optional parameters.
+
+Optional properties:
+-------------------
+ - reset-gpios: in case available used to control the device reset line.
+ - interrupt-controller - marks the node as interrupt controller.
+ - #interrupt-cells - should be two and represents the number of cells
+ needed to encode interrupt source.
+
+Example
+--------
+
+ gpioxra0: gpio@2 {
+ compatible = "exar,xra1403";
+ reg = <2>;
+
+ gpio-controller;
+ #gpio-cells = <2>;
+
+ interrupt-controller;
+ #interrupt-cells = <2>;
+
+ reset-gpios = <&gpio3 6 GPIO_ACTIVE_LOW>;
+ spi-max-frequency = <1000000>;
+ };