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# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
%YAML 1.2
---
$id: http://devicetree.org/schemas/serial/fsl-lpuart.yaml#
$schema: http://devicetree.org/meta-schemas/core.yaml#
title: Freescale low power universal asynchronous receiver/transmitter (lpuart)
maintainers:
- Fugang Duan <fugang.duan@nxp.com>
allOf:
- $ref: "rs485.yaml"
properties:
compatible:
oneOf:
- enum:
- fsl,vf610-lpuart
- fsl,ls1021a-lpuart
- fsl,ls1028a-lpuart
- fsl,imx7ulp-lpuart
- fsl,imx8qm-lpuart
- items:
- const: fsl,imx8qxp-lpuart
- const: fsl,imx7ulp-lpuart
reg:
maxItems: 1
interrupts:
maxItems: 1
clocks:
items:
- description: ipg clock
- description: baud clock
minItems: 1
maxItems: 2
clock-names:
items:
- const: ipg
- const: baud
minItems: 1
maxItems: 2
dmas:
items:
- description: DMA controller phandle and request line for RX
- description: DMA controller phandle and request line for TX
dma-names:
items:
- const: rx
- const: tx
rs485-rts-active-low: true
linux,rs485-enabled-at-boot-time: true
required:
- compatible
- reg
- interrupts
- clocks
- clock-names
unevaluatedProperties: false
examples:
- |
#include <dt-bindings/clock/vf610-clock.h>
serial@40027000 {
compatible = "fsl,vf610-lpuart";
reg = <0x40027000 0x1000>;
interrupts = <0 61 0x00>;
clocks = <&clks VF610_CLK_UART0>;
clock-names = "ipg";
dmas = <&edma0 0 2>, <&edma0 0 3>;
dma-names = "rx","tx";
};
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