| Tom Rini | 53633a8 | 2024-02-29 12:33:36 -0500 | [diff] [blame] | 1 | # SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) |
| 2 | %YAML 1.2 |
| 3 | --- |
| 4 | $id: http://devicetree.org/schemas/serial/mediatek,uart.yaml# |
| 5 | $schema: http://devicetree.org/meta-schemas/core.yaml# |
| 6 | |
| 7 | title: MediaTek Universal Asynchronous Receiver/Transmitter (UART) |
| 8 | |
| 9 | maintainers: |
| 10 | - Matthias Brugger <matthias.bgg@gmail.com> |
| 11 | |
| 12 | allOf: |
| 13 | - $ref: serial.yaml# |
| 14 | |
| 15 | description: | |
| 16 | The MediaTek UART is based on the basic 8250 UART and compatible |
| 17 | with 16550A, with enhancements for high speed baud rates and |
| 18 | support for DMA. |
| 19 | |
| 20 | properties: |
| 21 | compatible: |
| 22 | oneOf: |
| 23 | - const: mediatek,mt6577-uart |
| 24 | - items: |
| 25 | - enum: |
| 26 | - mediatek,mt2701-uart |
| 27 | - mediatek,mt2712-uart |
| 28 | - mediatek,mt6580-uart |
| 29 | - mediatek,mt6582-uart |
| 30 | - mediatek,mt6589-uart |
| 31 | - mediatek,mt6755-uart |
| 32 | - mediatek,mt6765-uart |
| 33 | - mediatek,mt6779-uart |
| 34 | - mediatek,mt6795-uart |
| 35 | - mediatek,mt6797-uart |
| 36 | - mediatek,mt7622-uart |
| 37 | - mediatek,mt7623-uart |
| 38 | - mediatek,mt7629-uart |
| 39 | - mediatek,mt7986-uart |
| 40 | - mediatek,mt8127-uart |
| 41 | - mediatek,mt8135-uart |
| 42 | - mediatek,mt8173-uart |
| 43 | - mediatek,mt8183-uart |
| 44 | - mediatek,mt8186-uart |
| 45 | - mediatek,mt8188-uart |
| 46 | - mediatek,mt8192-uart |
| 47 | - mediatek,mt8195-uart |
| 48 | - mediatek,mt8365-uart |
| 49 | - mediatek,mt8516-uart |
| 50 | - const: mediatek,mt6577-uart |
| 51 | |
| 52 | reg: |
| 53 | description: The base address of the UART register bank |
| 54 | maxItems: 1 |
| 55 | |
| 56 | clocks: |
| 57 | minItems: 1 |
| 58 | items: |
| 59 | - description: The clock the baudrate is derived from |
| 60 | - description: The bus clock for register accesses |
| 61 | |
| 62 | clock-names: |
| 63 | minItems: 1 |
| 64 | items: |
| 65 | - const: baud |
| 66 | - const: bus |
| 67 | |
| 68 | dmas: |
| 69 | items: |
| 70 | - description: phandle to TX DMA |
| 71 | - description: phandle to RX DMA |
| 72 | |
| 73 | dma-names: |
| 74 | items: |
| 75 | - const: tx |
| 76 | - const: rx |
| 77 | |
| 78 | interrupts: |
| 79 | minItems: 1 |
| 80 | maxItems: 2 |
| 81 | |
| 82 | interrupt-names: |
| 83 | description: |
| 84 | The UART interrupt and optionally the RX in-band wakeup interrupt. |
| 85 | minItems: 1 |
| 86 | items: |
| 87 | - const: uart |
| 88 | - const: wakeup |
| 89 | |
| 90 | pinctrl-0: true |
| 91 | pinctrl-1: true |
| 92 | |
| 93 | pinctrl-names: |
| 94 | minItems: 1 |
| 95 | items: |
| 96 | - const: default |
| 97 | - const: sleep |
| 98 | |
| 99 | required: |
| 100 | - compatible |
| 101 | - reg |
| 102 | - clocks |
| 103 | - interrupts |
| 104 | |
| 105 | unevaluatedProperties: false |
| 106 | |
| 107 | examples: |
| 108 | - | |
| 109 | #include <dt-bindings/interrupt-controller/arm-gic.h> |
| 110 | |
| 111 | serial@11006000 { |
| 112 | compatible = "mediatek,mt6589-uart", "mediatek,mt6577-uart"; |
| 113 | reg = <0x11006000 0x400>; |
| 114 | interrupts = <GIC_SPI 51 IRQ_TYPE_LEVEL_LOW>, |
| 115 | <GIC_SPI 52 IRQ_TYPE_EDGE_FALLING>; |
| 116 | interrupt-names = "uart", "wakeup"; |
| 117 | clocks = <&uart_clk>, <&bus_clk>; |
| 118 | clock-names = "baud", "bus"; |
| 119 | pinctrl-0 = <&uart_pin>; |
| 120 | pinctrl-1 = <&uart_pin_sleep>; |
| 121 | pinctrl-names = "default", "sleep"; |
| 122 | }; |