1# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) 2# Copyright 2019 Unisoc Inc. 3%YAML 1.2 4--- 5$id: http://devicetree.org/schemas/serial/sprd-uart.yaml# 6$schema: http://devicetree.org/meta-schemas/core.yaml# 7 8title: Spreadtrum serial UART 9 10maintainers: 11 - Orson Zhai <orsonzhai@gmail.com> 12 - Baolin Wang <baolin.wang7@gmail.com> 13 - Chunyan Zhang <zhang.lyra@gmail.com> 14 15properties: 16 compatible: 17 oneOf: 18 - items: 19 - enum: 20 - sprd,sc9860-uart 21 - sprd,sc9863a-uart 22 - sprd,ums512-uart 23 - const: sprd,sc9836-uart 24 - const: sprd,sc9836-uart 25 26 reg: 27 maxItems: 1 28 29 interrupts: 30 maxItems: 1 31 32 clocks: 33 minItems: 1 34 maxItems: 3 35 36 clock-names: 37 description: | 38 "enable" for UART module enable clock, "uart" for UART clock, "source" 39 for UART source (parent) clock. 40 items: 41 - const: enable 42 - const: uart 43 - const: source 44 45 dmas: 46 minItems: 1 47 maxItems: 2 48 49 dma-names: 50 minItems: 1 51 items: 52 - const: rx 53 - const: tx 54 55required: 56 - compatible 57 - reg 58 - interrupts 59 60additionalProperties: false 61 62examples: 63 - | 64 #include <dt-bindings/interrupt-controller/arm-gic.h> 65 serial@0 { 66 compatible = "sprd,sc9860-uart", "sprd,sc9836-uart"; 67 reg = <0x0 0x100>; 68 interrupts = <GIC_SPI 2 IRQ_TYPE_LEVEL_HIGH>; 69 dma-names = "rx", "tx"; 70 dmas = <&ap_dma 19>, <&ap_dma 20>; 71 clock-names = "enable", "uart", "source"; 72 clocks = <&clk_ap_apb_gates 9>, <&clk_uart0>, <&ext_26m>; 73 }; 74 75... 76