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