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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-imx-uart.yaml#
$schema: http://devicetree.org/meta-schemas/core.yaml#
title: Freescale i.MX Universal Asynchronous Receiver/Transmitter (UART)
maintainers:
- Fabio Estevam <fabio.estevam@nxp.com>
allOf:
- $ref: "serial.yaml"
- $ref: "rs485.yaml"
properties:
compatible:
oneOf:
- const: fsl,imx1-uart
- const: fsl,imx21-uart
- items:
- enum:
- fsl,imx25-uart
- fsl,imx27-uart
- fsl,imx31-uart
- fsl,imx35-uart
- fsl,imx50-uart
- fsl,imx51-uart
- fsl,imx53-uart
- fsl,imx6q-uart
- const: fsl,imx21-uart
- items:
- enum:
- fsl,imx6sl-uart
- fsl,imx6sll-uart
- fsl,imx6sx-uart
- const: fsl,imx6q-uart
- const: fsl,imx21-uart
- items:
- enum:
- fsl,imx6ul-uart
- fsl,imx7d-uart
- fsl,imx8mm-uart
- fsl,imx8mn-uart
- fsl,imx8mp-uart
- fsl,imx8mq-uart
- const: fsl,imx6q-uart
reg:
maxItems: 1
interrupts:
maxItems: 1
fsl,dte-mode:
$ref: /schemas/types.yaml#/definitions/flag
description: |
Indicate the uart works in DTE mode. The uart works in DCE mode by default.
fsl,inverted-tx:
$ref: /schemas/types.yaml#/definitions/flag
description: |
Indicate that the hardware attached to the peripheral inverts the signal
transmitted, and that the peripheral should invert its output using the
INVT registers.
fsl,inverted-rx:
$ref: /schemas/types.yaml#/definitions/flag
description: |
Indicate that the hardware attached to the peripheral inverts the signal
received, and that the peripheral should invert its input using the
INVR registers.
uart-has-rtscts: true
rs485-rts-delay: true
rs485-rts-active-low: true
rs485-rx-during-tx: true
linux,rs485-enabled-at-boot-time: true
required:
- compatible
- reg
- interrupts
unevaluatedProperties: false
examples:
- |
aliases {
serial0 = &uart1;
};
uart1: serial@73fbc000 {
compatible = "fsl,imx51-uart", "fsl,imx21-uart";
reg = <0x73fbc000 0x4000>;
interrupts = <31>;
uart-has-rtscts;
fsl,dte-mode;
};
|
