1* Freescale low power universal asynchronous receiver/transmitter (lpuart) 2 3Required properties: 4- compatible : 5 - "fsl,vf610-lpuart" for lpuart compatible with the one integrated 6 on Vybrid vf610 SoC with 8-bit register organization 7 - "fsl,ls1021a-lpuart" for lpuart compatible with the one integrated 8 on LS1021A SoC with 32-bit big-endian register organization 9 - "fsl,imx7ulp-lpuart" for lpuart compatible with the one integrated 10 on i.MX7ULP SoC with 32-bit little-endian register organization 11- reg : Address and length of the register set for the device 12- interrupts : Should contain uart interrupt 13- clocks : phandle + clock specifier pairs, one for each entry in clock-names 14- clock-names : should contain: "ipg" - the uart clock 15 16Optional properties: 17- dmas: A list of two dma specifiers, one for each entry in dma-names. 18- dma-names: should contain "tx" and "rx". 19- rs485-rts-delay, rs485-rts-active-low, rs485-rx-during-tx, 20 linux,rs485-enabled-at-boot-time: see rs485.txt 21 22Note: Optional properties for DMA support. Write them both or both not. 23 24Example: 25 26uart0: serial@40027000 { 27 compatible = "fsl,vf610-lpuart"; 28 reg = <0x40027000 0x1000>; 29 interrupts = <0 61 0x00>; 30 clocks = <&clks VF610_CLK_UART0>; 31 clock-names = "ipg"; 32 dmas = <&edma0 0 2>, 33 <&edma0 0 3>; 34 dma-names = "rx","tx"; 35 }; 36