| * MAX7320 I/O expanders |
| |
| The original maxim 7320 i/o expander offers 8 bit push/pull outputs. |
| There exists some clones which offers 16 bit. |
| |
| Required Properties: |
| |
| - compatible: should be one of the following. |
| - "maxim,max7320" |
| |
| - reg: I2C slave address. |
| |
| - gpio-controller: Marks the device node as a gpio controller. |
| - #gpio-cells: Should be 2. The first cell is the GPIO number and the second |
| cell specifies GPIO flags, as defined in <dt-bindings/gpio/gpio.h>. Only the |
| GPIO_ACTIVE_HIGH and GPIO_ACTIVE_LOW flags are supported. |
| |
| Optional Properties: |
| |
| - ngpios: tell the driver how many gpios the device offers. |
| if the property is omitted, 8bit (original maxim) is assumed. |
| |
| Please refer to gpio.txt in this directory for details of the common GPIO |
| bindings used by client devices. |
| |
| Example: MAX7320 I/O expander node |
| |
| ledgpio: max7320@5d { |
| status = "okay"; |
| compatible = "maxim,max7320"; |
| reg = <0x5d>; |
| #gpio-cells = <2>; |
| gpio-controller; |
| ngpios = <16>; |
| }; |
| |