1# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) 2%YAML 1.2 3--- 4$id: http://devicetree.org/schemas/serial/fsl-lpuart.yaml# 5$schema: http://devicetree.org/meta-schemas/core.yaml# 6 7title: Freescale low power universal asynchronous receiver/transmitter (lpuart) 8 9maintainers: 10 - Fugang Duan <fugang.duan@nxp.com> 11 12allOf: 13 - $ref: "rs485.yaml" 14 15properties: 16 compatible: 17 oneOf: 18 - enum: 19 - fsl,vf610-lpuart 20 - fsl,ls1021a-lpuart 21 - fsl,ls1028a-lpuart 22 - fsl,imx7ulp-lpuart 23 - fsl,imx8qm-lpuart 24 - items: 25 - const: fsl,imx8qxp-lpuart 26 - const: fsl,imx7ulp-lpuart 27 28 reg: 29 maxItems: 1 30 31 interrupts: 32 maxItems: 1 33 34 clocks: 35 items: 36 - description: ipg clock 37 - description: baud clock 38 minItems: 1 39 maxItems: 2 40 41 clock-names: 42 items: 43 - const: ipg 44 - const: baud 45 minItems: 1 46 maxItems: 2 47 48 dmas: 49 items: 50 - description: DMA controller phandle and request line for RX 51 - description: DMA controller phandle and request line for TX 52 53 dma-names: 54 items: 55 - const: rx 56 - const: tx 57 58 rs485-rts-active-low: true 59 linux,rs485-enabled-at-boot-time: true 60 61required: 62 - compatible 63 - reg 64 - interrupts 65 - clocks 66 - clock-names 67 68unevaluatedProperties: false 69 70examples: 71 - | 72 #include <dt-bindings/clock/vf610-clock.h> 73 74 serial@40027000 { 75 compatible = "fsl,vf610-lpuart"; 76 reg = <0x40027000 0x1000>; 77 interrupts = <0 61 0x00>; 78 clocks = <&clks VF610_CLK_UART0>; 79 clock-names = "ipg"; 80 dmas = <&edma0 0 2>, <&edma0 0 3>; 81 dma-names = "rx","tx"; 82 }; 83