1 GPIO Driver for XRA1403 16-BIT GPIO Expander With Reset Input from EXAR
3 The XRA1403 is an 16-bit GPIO expander with an SPI interface. Features available:
4 - Individually programmable inputs:
5 - Internal pull-up resistors
7 - Individual interrupt enable
8 - Rising edge and/or Falling edge interrupt
10 - Individually programmable outputs
11 - Output Level Control
12 - Output Three-State Control
16 Check documentation for SPI and GPIO controllers regarding properties needed to configure the node.
18 - compatible = "exar,xra1403".
19 - reg - SPI id of the device.
20 - gpio-controller - marks the node as gpio.
21 - #gpio-cells - should be two where the first cell is the pin number
22 and the second one is used for optional parameters.
26 - reset-gpios: in case available used to control the device reset line.
27 - interrupt-controller - marks the node as interrupt controller.
28 - #interrupt-cells - should be two and represents the number of cells
29 needed to encode interrupt source.
35 compatible = "exar,xra1403";
42 #interrupt-cells = <2>;
44 reset-gpios = <&gpio3 6 GPIO_ACTIVE_LOW>;
45 spi-max-frequency = <1000000>;