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# SPDX-License-Identifier: GPL-2.0
%YAML 1.2
---
$id: http://devicetree.org/schemas/serial/snps-dw-apb-uart.yaml#
$schema: http://devicetree.org/meta-schemas/core.yaml#
title: Synopsys DesignWare ABP UART
maintainers:
- Rob Herring <robh@kernel.org>
allOf:
- $ref: /schemas/serial.yaml#
properties:
compatible:
oneOf:
- items:
- enum:
- renesas,r9a06g032-uart
- renesas,r9a06g033-uart
- const: renesas,rzn1-uart
- items:
- enum:
- rockchip,px30-uart
- rockchip,rk3036-uart
- rockchip,rk3066-uart
- rockchip,rk3188-uart
- rockchip,rk3288-uart
- rockchip,rk3328-uart
- rockchip,rk3368-uart
- rockchip,rk3399-uart
- rockchip,rv1108-uart
- const: snps,dw-apb-uart
- items:
- enum:
- brcm,bcm11351-dw-apb-uart
- brcm,bcm21664-dw-apb-uart
- const: snps,dw-apb-uart
- const: snps,dw-apb-uart
reg:
maxItems: 1
interrupts:
maxItems: 1
clock-frequency: true
clocks:
minItems: 1
maxItems: 2
clock-names:
items:
- const: baudclk
- const: apb_pclk
snps,uart-16550-compatible:
description: reflects the value of UART_16550_COMPATIBLE configuration
parameter. Define this if your UART does not implement the busy functionality.
type: boolean
resets:
maxItems: 1
reg-shift: true
reg-io-width: true
dcd-override:
description: Override the DCD modem status signal. This signal will
always be reported as active instead of being obtained from the modem
status register. Define this if your serial port does not use this
pin.
type: boolean
dsr-override:
description: Override the DTS modem status signal. This signal will
always be reported as active instead of being obtained from the modem
status register. Define this if your serial port does not use this
pin.
type: boolean
cts-override:
description: Override the CTS modem status signal. This signal will
always be reported as active instead of being obtained from the modem
status register. Define this if your serial port does not use this
pin.
type: boolean
ri-override:
description: Override the RI modem status signal. This signal will always
be reported as inactive instead of being obtained from the modem status
register. Define this if your serial port does not use this pin.
type: boolean
required:
- compatible
- reg
- interrupts
examples:
- |
serial@80230000 {
compatible = "snps,dw-apb-uart";
reg = <0x80230000 0x100>;
clock-frequency = <3686400>;
interrupts = <10>;
reg-shift = <2>;
reg-io-width = <4>;
dcd-override;
dsr-override;
cts-override;
ri-override;
};
- |
// Example with one clock:
serial@80230000 {
compatible = "snps,dw-apb-uart";
reg = <0x80230000 0x100>;
clocks = <&baudclk>;
interrupts = <10>;
reg-shift = <2>;
reg-io-width = <4>;
};
- |
// Example with two clocks:
serial@80230000 {
compatible = "snps,dw-apb-uart";
reg = <0x80230000 0x100>;
clocks = <&baudclk>, <&apb_pclk>;
clock-names = "baudclk", "apb_pclk";
interrupts = <10>;
reg-shift = <2>;
reg-io-width = <4>;
};
...
|
