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 - const: sprd,sc9836-uart 22 - const: sprd,sc9836-uart 23 24 reg: 25 maxItems: 1 26 27 interrupts: 28 maxItems: 1 29 30 clocks: 31 minItems: 1 32 maxItems: 3 33 34 clock-names: 35 description: | 36 "enable" for UART module enable clock, "uart" for UART clock, "source" 37 for UART source (parent) clock. 38 items: 39 - const: enable 40 - const: uart 41 - const: source 42 43 dmas: 44 minItems: 1 45 maxItems: 2 46 47 dma-names: 48 minItems: 1 49 items: 50 - const: rx 51 - const: tx 52 53required: 54 - compatible 55 - reg 56 - interrupts 57 58examples: 59 - | 60 #include <dt-bindings/interrupt-controller/arm-gic.h> 61 serial@0 { 62 compatible = "sprd,sc9860-uart", "sprd,sc9836-uart"; 63 reg = <0x0 0x100>; 64 interrupts = <GIC_SPI 2 IRQ_TYPE_LEVEL_HIGH>; 65 dma-names = "rx", "tx"; 66 dmas = <&ap_dma 19>, <&ap_dma 20>; 67 clock-names = "enable", "uart", "source"; 68 clocks = <&clk_ap_apb_gates 9>, <&clk_uart0>, <&ext_26m>; 69 }; 70 71... 72