nvidia,tegra210-i2s.yaml (2941B)
1# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) 2%YAML 1.2 3--- 4$id: http://devicetree.org/schemas/sound/nvidia,tegra210-i2s.yaml# 5$schema: http://devicetree.org/meta-schemas/core.yaml# 6 7title: Tegra210 I2S Controller Device Tree Bindings 8 9description: | 10 The Inter-IC Sound (I2S) controller implements full-duplex, 11 bi-directional and single direction point-to-point serial 12 interfaces. It can interface with I2S compatible devices. 13 I2S controller can operate both in master and slave mode. 14 15maintainers: 16 - Jon Hunter <jonathanh@nvidia.com> 17 - Sameer Pujar <spujar@nvidia.com> 18 19allOf: 20 - $ref: name-prefix.yaml# 21 22properties: 23 $nodename: 24 pattern: "^i2s@[0-9a-f]*$" 25 26 compatible: 27 oneOf: 28 - const: nvidia,tegra210-i2s 29 - items: 30 - enum: 31 - nvidia,tegra234-i2s 32 - nvidia,tegra194-i2s 33 - nvidia,tegra186-i2s 34 - const: nvidia,tegra210-i2s 35 36 reg: 37 maxItems: 1 38 39 clocks: 40 minItems: 1 41 items: 42 - description: I2S bit clock 43 - description: 44 Sync input clock, which can act as clock source to other I/O 45 modules in AHUB. The Tegra I2S driver sets this clock rate as 46 per bit clock rate. I/O module which wants to use this clock 47 as source, can mention this clock as parent in the DT bindings. 48 This is an optional clock entry, since it is only required when 49 some other I/O wants to reference from a particular I2Sx 50 instance. 51 52 clock-names: 53 minItems: 1 54 items: 55 - const: i2s 56 - const: sync_input 57 58 assigned-clocks: 59 minItems: 1 60 maxItems: 2 61 62 assigned-clock-parents: 63 minItems: 1 64 maxItems: 2 65 66 assigned-clock-rates: 67 minItems: 1 68 maxItems: 2 69 70 sound-name-prefix: 71 pattern: "^I2S[1-9]$" 72 73 ports: 74 $ref: /schemas/graph.yaml#/properties/ports 75 properties: 76 port@0: 77 $ref: audio-graph-port.yaml# 78 unevaluatedProperties: false 79 description: | 80 I2S ACIF (Audio Client Interface) port connected to the 81 corresponding AHUB (Audio Hub) ACIF port. 82 83 port@1: 84 $ref: audio-graph-port.yaml# 85 unevaluatedProperties: false 86 description: | 87 I2S DAP (Digital Audio Port) interface which can be connected 88 to external audio codec for playback or capture. 89 90required: 91 - compatible 92 - reg 93 - clocks 94 - clock-names 95 - assigned-clocks 96 - assigned-clock-parents 97 98additionalProperties: false 99 100examples: 101 - | 102 #include<dt-bindings/clock/tegra210-car.h> 103 104 i2s@702d1000 { 105 compatible = "nvidia,tegra210-i2s"; 106 reg = <0x702d1000 0x100>; 107 clocks = <&tegra_car TEGRA210_CLK_I2S0>; 108 clock-names = "i2s"; 109 assigned-clocks = <&tegra_car TEGRA210_CLK_I2S0>; 110 assigned-clock-parents = <&tegra_car TEGRA210_CLK_PLL_A_OUT0>; 111 assigned-clock-rates = <1536000>; 112 sound-name-prefix = "I2S1"; 113 }; 114 115...