gpio-xra1403.txt

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    1 GPIO Driver for XRA1403 16-BIT GPIO Expander With Reset Input from EXAR
    2 
    3 The XRA1403 is an 16-bit GPIO expander with an SPI interface. Features available:
    4         - Individually programmable inputs:
    5                 - Internal pull-up resistors
    6                 - Polarity inversion
    7                 - Individual interrupt enable
    8                 - Rising edge and/or Falling edge interrupt
    9                 - Input filter
   10         - Individually programmable outputs
   11                 - Output Level Control
   12                 - Output Three-State Control
   13 
   14 Properties
   15 ----------
   16 Check documentation for SPI and GPIO controllers regarding properties needed to configure the node.
   17 
   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.
   23 
   24 Optional properties:
   25 -------------------
   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.
   30 
   31 Example
   32 --------
   33 
   34         gpioxra0: gpio@2 {
   35                 compatible = "exar,xra1403";
   36                 reg = <2>;
   37 
   38                 gpio-controller;
   39                 #gpio-cells = <2>;
   40 
   41                 interrupt-controller;
   42                 #interrupt-cells = <2>;
   43 
   44                 reset-gpios = <&gpio3 6 GPIO_ACTIVE_LOW>;
   45                 spi-max-frequency = <1000000>;
   46         };

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FreeBSD/Linux Kernel Cross Reference sys/contrib/device-tree/Bindings/gpio/gpio-xra1403.txt

FreeBSD/Linux Kernel Cross Reference
sys/contrib/device-tree/Bindings/gpio/gpio-xra1403.txt