# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) # Copyright 2019 Unisoc Inc. %YAML 1.2 --- $id: http://devicetree.org/schemas/serial/sprd-uart.yaml# $schema: http://devicetree.org/meta-schemas/core.yaml# title: Spreadtrum serial UART maintainers: - Orson Zhai - Baolin Wang - Chunyan Zhang properties: compatible: oneOf: - items: - enum: - sprd,sc9860-uart - sprd,sc9863a-uart - sprd,ums512-uart - sprd,ums9620-uart - const: sprd,sc9836-uart - const: sprd,sc9836-uart reg: maxItems: 1 interrupts: maxItems: 1 clocks: minItems: 1 maxItems: 3 clock-names: description: | "enable" for UART module enable clock, "uart" for UART clock, "source" for UART source (parent) clock. items: - const: enable - const: uart - const: source dmas: minItems: 1 maxItems: 2 dma-names: minItems: 1 items: - const: rx - const: tx required: - compatible - reg - interrupts additionalProperties: false examples: - | #include serial@0 { compatible = "sprd,sc9860-uart", "sprd,sc9836-uart"; reg = <0x0 0x100>; interrupts = ; dma-names = "rx", "tx"; dmas = <&ap_dma 19>, <&ap_dma 20>; clock-names = "enable", "uart", "source"; clocks = <&clk_ap_apb_gates 9>, <&clk_uart0>, <&ext_26m>; }; ...