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dt-bindings: serial: Convert cirrus,ep7209-uart to DT schema

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Convert the Cirrus EP7209 UART binding to DT schema. There is no user of
"cirrus,ep7312-uart" other than the example, so drop it. Drop the
"aliases" node part as it is not relevant to the schema. The modem
control GPIOs are covered by the serial.yaml schema and don't have to be
listed in the schema.

Signed-off-by: "Rob Herring (Arm)" <robh@kernel.org>
Reviewed-by: Thierry Reding <treding@nvidia.com>
Link: https://lore.kernel.org/r/20250506220021.2545820-1-robh@kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Rob Herring (Arm) 2025-05-06 17:00:19 -05:00 committed by Greg Kroah-Hartman
parent 1dd624430d
commit a34fc8836f
2 changed files with 56 additions and 31 deletions
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31
Documentation/devicetree/bindings/serial/cirrus,clps711x-uart.txt
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* Cirrus Logic CLPS711X Universal Asynchronous Receiver/Transmitter (UART)
Required properties:
- compatible: Should be "cirrus,ep7209-uart".
- reg: Address and length of the register set for the device.
- interrupts: Should contain UART TX and RX interrupt.
- clocks: Should contain UART core clock number.
- syscon: Phandle to SYSCON node, which contain UART control bits.
Optional properties:
- {rts,cts,dtr,dsr,rng,dcd}-gpios: specify a GPIO for RTS/CTS/DTR/DSR/RI/DCD
line respectively.
Note: Each UART port should have an alias correctly numbered
in "aliases" node.
Example:
aliases {
serial0 = &uart1;
};
uart1: uart@80000480 {
compatible = "cirrus,ep7312-uart","cirrus,ep7209-uart";
reg = <0x80000480 0x80>;
interrupts = <12 13>;
clocks = <&clks 11>;
syscon = <&syscon1>;
cts-gpios = <&sysgpio 0 GPIO_ACTIVE_LOW>;
dsr-gpios = <&sysgpio 1 GPIO_ACTIVE_LOW>;
dcd-gpios = <&sysgpio 2 GPIO_ACTIVE_LOW>;
};

56
Documentation/devicetree/bindings/serial/cirrus,ep7209-uart.yaml Normal file
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# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
%YAML 1.2
---
$id: http://devicetree.org/schemas/serial/cirrus,ep7209-uart.yaml#
$schema: http://devicetree.org/meta-schemas/core.yaml#
title: Cirrus Logic CLPS711X Universal Asynchronous Receiver/Transmitter (UART)
maintainers:
- Alexander Shiyan <shc_work@mail.ru>
allOf:
- $ref: /schemas/serial/serial.yaml#
properties:
compatible:
const: cirrus,ep7209-uart
reg:
maxItems: 1
interrupts:
items:
- description: UART TX interrupt
- description: UART RX interrupt
clocks:
maxItems: 1
syscon:
description: Phandle to SYSCON node, which contains UART control bits.
$ref: /schemas/types.yaml#/definitions/phandle
required:
- compatible
- reg
- interrupts
- clocks
- syscon
unevaluatedProperties: false
examples:
- |
#include <dt-bindings/gpio/gpio.h>
serial@80000480 {
compatible = "cirrus,ep7209-uart";
reg = <0x80000480 0x80>;
interrupts = <12>, <13>;
clocks = <&clks 11>;
syscon = <&syscon1>;
cts-gpios = <&sysgpio 0 GPIO_ACTIVE_LOW>;
dsr-gpios = <&sysgpio 1 GPIO_ACTIVE_LOW>;
dcd-gpios = <&sysgpio 2 GPIO_ACTIVE_LOW>;
};