1# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) 2%YAML 1.2 3--- 4$id: http://devicetree.org/schemas/sound/nvidia,tegra20-i2s.yaml# 5$schema: http://devicetree.org/meta-schemas/core.yaml# 6 7title: NVIDIA Tegra20 I2S Controller 8 9description: | 10 The I2S Controller streams synchronous serial audio data between system 11 memory and an external audio device. The controller supports the I2S Left 12 Justified Mode, Right Justified Mode, and DSP mode formats. 13 14maintainers: 15 - Thierry Reding <treding@nvidia.com> 16 - Jon Hunter <jonathanh@nvidia.com> 17 18properties: 19 compatible: 20 const: nvidia,tegra20-i2s 21 22 reg: 23 maxItems: 1 24 25 resets: 26 maxItems: 1 27 28 reset-names: 29 const: i2s 30 31 interrupts: 32 maxItems: 1 33 34 clocks: 35 minItems: 1 36 37 dmas: 38 minItems: 2 39 40 dma-names: 41 items: 42 - const: rx 43 - const: tx 44 45 nvidia,fixed-parent-rate: 46 description: | 47 Specifies whether board prefers parent clock to stay at a fixed rate. 48 This allows multiple Tegra20 audio components work simultaneously by 49 limiting number of supportable audio rates. 50 type: boolean 51 52required: 53 - compatible 54 - reg 55 - resets 56 - reset-names 57 - interrupts 58 - clocks 59 - dmas 60 - dma-names 61 62additionalProperties: false 63 64examples: 65 - | 66 i2s@70002800 { 67 compatible = "nvidia,tegra20-i2s"; 68 reg = <0x70002800 0x200>; 69 interrupts = <45>; 70 clocks = <&tegra_car 11>; 71 resets = <&tegra_car 11>; 72 reset-names = "i2s"; 73 dmas = <&apbdma 21>, <&apbdma 21>; 74 dma-names = "rx", "tx"; 75 }; 76 77... 78