| 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/sound/davinci-mcasp-audio.yaml# |
| 5 | $schema: http://devicetree.org/meta-schemas/core.yaml# |
| 6 | |
| 7 | title: McASP Controller for TI SoCs |
| 8 | |
| 9 | maintainers: |
| 10 | - Jayesh Choudhary <j-choudhary@ti.com> |
| 11 | |
| 12 | properties: |
| 13 | compatible: |
| 14 | enum: |
| 15 | - ti,dm646x-mcasp-audio |
| 16 | - ti,da830-mcasp-audio |
| 17 | - ti,am33xx-mcasp-audio |
| 18 | - ti,dra7-mcasp-audio |
| 19 | - ti,omap4-mcasp-audio |
| 20 | |
| 21 | reg: |
| 22 | minItems: 1 |
| 23 | items: |
| 24 | - description: CFG registers |
| 25 | - description: data registers |
| 26 | |
| 27 | reg-names: |
| 28 | minItems: 1 |
| 29 | items: |
| 30 | - const: mpu |
| 31 | - const: dat |
| 32 | |
| 33 | op-mode: |
| 34 | $ref: /schemas/types.yaml#/definitions/uint32 |
| 35 | description: 0 - I2S or 1 - DIT operation mode |
| 36 | enum: |
| 37 | - 0 |
| 38 | - 1 |
| 39 | |
| 40 | tdm-slots: |
| 41 | $ref: /schemas/types.yaml#/definitions/uint32 |
| 42 | description: |
| 43 | number of channels over one serializer |
| 44 | the property is ignored in DIT mode |
| 45 | minimum: 2 |
| 46 | maximum: 32 |
| 47 | |
| 48 | serial-dir: |
| 49 | description: |
| 50 | A list of serializer configuration |
| 51 | Entry is indication for serializer pin direction |
| 52 | 0 - Inactive, 1 - TX, 2 - RX |
| 53 | All AXR pins should be present in the array even if inactive |
| 54 | $ref: /schemas/types.yaml#/definitions/uint32-array |
| 55 | minItems: 1 |
| 56 | maxItems: 25 |
| 57 | items: |
| 58 | minimum: 0 |
| 59 | maximum: 2 |
| 60 | |
| 61 | dmas: |
| 62 | minItems: 1 |
| 63 | items: |
| 64 | - description: transmission DMA channel |
| 65 | - description: reception DMA channel |
| 66 | |
| 67 | dma-names: |
| 68 | minItems: 1 |
| 69 | items: |
| 70 | - const: tx |
| 71 | - const: rx |
| 72 | |
| 73 | ti,hwmods: |
| 74 | $ref: /schemas/types.yaml#/definitions/string |
| 75 | description: Name of hwmod associated with McASP |
| 76 | maxItems: 1 |
| 77 | deprecated: true |
| 78 | |
| 79 | tx-num-evt: |
| 80 | $ref: /schemas/types.yaml#/definitions/uint32 |
| 81 | description: |
| 82 | configures WFIFO threshold |
| 83 | 0 disables the FIFO use |
| 84 | if property is missing, then also FIFO use is disabled |
| 85 | |
| 86 | rx-num-evt: |
| 87 | $ref: /schemas/types.yaml#/definitions/uint32 |
| 88 | description: |
| 89 | configures RFIFO threshold |
| 90 | 0 disables the FIFO use |
| 91 | if property is missing, then also FIFO use is disabled |
| 92 | |
| 93 | dismod: |
| 94 | $ref: /schemas/types.yaml#/definitions/uint32 |
| 95 | description: |
| 96 | specify the drive on TX pin during inactive time slots |
| 97 | 0 - 3-state, 2 - logic low, 3 - logic high |
| 98 | enum: |
| 99 | - 0 |
| 100 | - 2 |
| 101 | - 3 |
| 102 | default: 2 |
| 103 | |
| 104 | interrupts: |
| 105 | anyOf: |
| 106 | - minItems: 1 |
| 107 | items: |
| 108 | - description: TX interrupt |
| 109 | - description: RX interrupt |
| 110 | - items: |
| 111 | - description: common/combined interrupt |
| 112 | |
| 113 | interrupt-names: |
| 114 | oneOf: |
| 115 | - minItems: 1 |
| 116 | items: |
| 117 | - const: tx |
| 118 | - const: rx |
| 119 | - const: common |
| 120 | |
| 121 | fck_parent: |
| 122 | $ref: /schemas/types.yaml#/definitions/string |
| 123 | description: parent clock name for McASP fck |
| 124 | maxItems: 1 |
| 125 | |
| 126 | auxclk-fs-ratio: |
| 127 | $ref: /schemas/types.yaml#/definitions/uint32 |
| 128 | description: ratio of AUCLK and FS rate if applicable |
| 129 | |
| 130 | gpio-controller: true |
| 131 | |
| 132 | "#gpio-cells": |
| 133 | const: 2 |
| 134 | |
| 135 | clocks: |
| 136 | minItems: 1 |
| 137 | items: |
| 138 | - description: functional clock |
| 139 | - description: module specific optional ahclkx clock |
| 140 | - description: module specific optional ahclkr clock |
| 141 | |
| 142 | clock-names: |
| 143 | minItems: 1 |
| 144 | items: |
| 145 | - const: fck |
| 146 | - const: ahclkx |
| 147 | - const: ahclkr |
| 148 | |
| 149 | power-domains: |
| 150 | description: phandle to the corresponding power-domain |
| 151 | maxItems: 1 |
| 152 | |
| 153 | "#sound-dai-cells": |
| 154 | const: 0 |
| 155 | |
| 156 | port: |
| 157 | description: connection for when McASP is used via graph card |
| 158 | type: object |
| 159 | |
| 160 | required: |
| 161 | - compatible |
| 162 | - reg |
| 163 | - reg-names |
| 164 | - dmas |
| 165 | - dma-names |
| 166 | - interrupts |
| 167 | - interrupt-names |
| 168 | |
| 169 | allOf: |
| 170 | - $ref: dai-common.yaml# |
| 171 | - if: |
| 172 | properties: |
| 173 | opmode: |
| 174 | enum: |
| 175 | - 0 |
| 176 | |
| 177 | then: |
| 178 | required: |
| 179 | - tdm-slots |
| 180 | |
| 181 | unevaluatedProperties: false |
| 182 | |
| 183 | examples: |
| 184 | - | |
| 185 | mcasp0: mcasp0@1d00000 { |
| 186 | compatible = "ti,da830-mcasp-audio"; |
| 187 | reg = <0x100000 0x3000>; |
| 188 | reg-names = "mpu"; |
| 189 | interrupts = <82>, <83>; |
| 190 | interrupt-names = "tx", "rx"; |
| 191 | op-mode = <0>; /* MCASP_IIS_MODE */ |
| 192 | tdm-slots = <2>; |
| 193 | dmas = <&main_udmap 0xc400>, <&main_udmap 0x4400>; |
| 194 | dma-names = "tx", "rx"; |
| 195 | serial-dir = < |
| 196 | 0 0 0 0 /* 0: INACTIVE, 1: TX, 2: RX */ |
| 197 | 0 0 0 0 |
| 198 | 0 0 0 1 |
| 199 | 2 0 0 0 >; |
| 200 | tx-num-evt = <1>; |
| 201 | rx-num-evt = <1>; |
| 202 | }; |