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- interrupt-parent: The phandle for the interrupt controller that 11 services interrupts for this IC. 12- interrupts: Specifies the interrupt source of the parent interrupt 13 controller. The format of the interrupt specifier depends on the 14 parent interrupt controller. 15- clocks: phandle to the IC source clock. 16- clock-names: Should be "xtal" if clock is an external crystal or 17 "osc" if an external clock source is used. 18 19Optional properties: 20- gpio-controller: Marks the device node as a GPIO controller. 21- #gpio-cells: Should be two. The first cell is the GPIO number and 22 the second cell is used to specify the GPIO polarity: 23 0 = active high, 24 1 = active low. 25 26Example: 27 28/ { 29 clocks { 30 spi_uart_clk: osc_max14830 { 31 compatible = "fixed-clock"; 32 #clock-cells = <0>; 33 clock-frequency = <3686400>; 34 }; 35 36 }; 37}; 38 39&spi0 { 40 max14830: max14830@0 { 41 compatible = "maxim,max14830"; 42 reg = <0>; 43 clocks = <&spi_uart_clk>; 44 clock-names = "osc"; 45 interrupt-parent = <&gpio3>; 46 interrupts = <7 IRQ_TYPE_LEVEL_LOW>; 47 gpio-controller; 48 #gpio-cells = <2>; 49 }; 50}; 51