1* Maxim MAX310X advanced Universal Asynchronous Receiver-Transmitter (UART) 2 3Required properties: 4- compatible: Should be one of the following: 5 - "maxim,max3107" for Maxim MAX3107, 6 - "maxim,max3108" for Maxim MAX3108, 7 - "maxim,max3109" for Maxim MAX3109, 8 - "maxim,max14830" for Maxim MAX14830. 9- reg: SPI chip select number. 10- interrupts: Specifies the interrupt source of the parent interrupt 11 controller. The format of the interrupt specifier depends on the 12 parent interrupt controller. 13- clocks: phandle to the IC source clock. 14- clock-names: Should be "xtal" if clock is an external crystal or 15 "osc" if an external clock source is used. 16 17Optional properties: 18- gpio-controller: Marks the device node as a GPIO controller. 19- #gpio-cells: Should be two. The first cell is the GPIO number and 20 the second cell is used to specify the GPIO polarity: 21 0 = active high, 22 1 = active low. 23 24Example: 25 26/ { 27 clocks { 28 spi_uart_clk: osc_max14830 { 29 compatible = "fixed-clock"; 30 #clock-cells = <0>; 31 clock-frequency = <3686400>; 32 }; 33 34 }; 35}; 36 37&spi0 { 38 max14830: max14830@0 { 39 compatible = "maxim,max14830"; 40 reg = <0>; 41 clocks = <&spi_uart_clk>; 42 clock-names = "osc"; 43 interrupt-parent = <&gpio3>; 44 interrupts = <7 IRQ_TYPE_LEVEL_LOW>; 45 gpio-controller; 46 #gpio-cells = <2>; 47 }; 48}; 49