1# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) 2%YAML 1.2 3--- 4$id: http://devicetree.org/schemas/serial/brcm,bcm7271-uart.yaml# 5$schema: http://devicetree.org/meta-schemas/core.yaml# 6 7title: Broadcom 8250 based serial port 8 9maintainers: 10 - Al Cooper <alcooperx@gmail.com> 11 12allOf: 13 - $ref: serial.yaml# 14 15description: |+ 16 The Broadcom UART is based on the basic 8250 UART but with 17 enhancements for more accurate high speed baud rates and support 18 for DMA. 19 20properties: 21 compatible: 22 items: 23 - enum: 24 - brcm,bcm7271-uart 25 - brcm,bcm7278-uart 26 27 reg: 28 minItems: 1 29 maxItems: 5 30 31 reg-names: 32 description: The UART register block and optionally the DMA register blocks. 33 oneOf: 34 - items: 35 - const: uart 36 - items: 37 - const: uart 38 - const: dma_arb 39 - const: dma_rx 40 - const: dma_tx 41 - const: dma_intr2 42 43 clocks: 44 minItems: 1 45 46 clock-names: 47 const: sw_baud 48 49 interrupts: 50 minItems: 1 51 maxItems: 2 52 53 interrupt-names: 54 description: The UART interrupt and optionally the DMA interrupt. 55 minItems: 1 56 items: 57 - const: uart 58 - const: dma 59 60required: 61 - compatible 62 - reg 63 - reg-names 64 - clocks 65 - clock-names 66 - interrupts 67 - interrupt-names 68 69unevaluatedProperties: false 70 71examples: 72 - | 73 serial@840d000 { 74 compatible = "brcm,bcm7271-uart"; 75 reg = <0x840d000 0x20>; 76 reg-names = "uart"; 77 interrupts = <0x0 0x62 0x4>; 78 interrupt-names = "uart"; 79 clocks = <&scmi_clk 190>; 80 clock-names = "sw_baud"; 81 }; 82 83 serial@840e000 { 84 compatible = "brcm,bcm7271-uart"; 85 reg = <0x840e000 0x20>, 86 <0x840e080 0x8>, 87 <0x840e100 0xa8>, 88 <0x840e200 0x4c>, 89 <0x840e300 0x30>; 90 reg-names = "uart", "dma_arb", "dma_rx", "dma_tx", "dma_intr2"; 91 interrupts = <0x0 0x62 0x4>, <0x0 0x75 0x4>; 92 interrupt-names = "uart", "dma"; 93 clocks = <&scmi_clk 190>; 94 clock-names = "sw_baud"; 95 }; 96