1*e67e8565SEmmanuel Vadot# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) 2*e67e8565SEmmanuel Vadot%YAML 1.2 3*e67e8565SEmmanuel Vadot--- 4*e67e8565SEmmanuel Vadot$id: http://devicetree.org/schemas/sound/nvidia,tegra20-i2s.yaml# 5*e67e8565SEmmanuel Vadot$schema: http://devicetree.org/meta-schemas/core.yaml# 6*e67e8565SEmmanuel Vadot 7*e67e8565SEmmanuel Vadottitle: NVIDIA Tegra20 I2S Controller 8*e67e8565SEmmanuel Vadot 9*e67e8565SEmmanuel Vadotdescription: | 10*e67e8565SEmmanuel Vadot The I2S Controller streams synchronous serial audio data between system 11*e67e8565SEmmanuel Vadot memory and an external audio device. The controller supports the I2S Left 12*e67e8565SEmmanuel Vadot Justified Mode, Right Justified Mode, and DSP mode formats. 13*e67e8565SEmmanuel Vadot 14*e67e8565SEmmanuel Vadotmaintainers: 15*e67e8565SEmmanuel Vadot - Thierry Reding <treding@nvidia.com> 16*e67e8565SEmmanuel Vadot - Jon Hunter <jonathanh@nvidia.com> 17*e67e8565SEmmanuel Vadot 18*e67e8565SEmmanuel Vadotproperties: 19*e67e8565SEmmanuel Vadot compatible: 20*e67e8565SEmmanuel Vadot const: nvidia,tegra20-i2s 21*e67e8565SEmmanuel Vadot 22*e67e8565SEmmanuel Vadot reg: 23*e67e8565SEmmanuel Vadot maxItems: 1 24*e67e8565SEmmanuel Vadot 25*e67e8565SEmmanuel Vadot resets: 26*e67e8565SEmmanuel Vadot maxItems: 1 27*e67e8565SEmmanuel Vadot 28*e67e8565SEmmanuel Vadot reset-names: 29*e67e8565SEmmanuel Vadot const: i2s 30*e67e8565SEmmanuel Vadot 31*e67e8565SEmmanuel Vadot interrupts: 32*e67e8565SEmmanuel Vadot maxItems: 1 33*e67e8565SEmmanuel Vadot 34*e67e8565SEmmanuel Vadot clocks: 35*e67e8565SEmmanuel Vadot minItems: 1 36*e67e8565SEmmanuel Vadot 37*e67e8565SEmmanuel Vadot dmas: 38*e67e8565SEmmanuel Vadot minItems: 2 39*e67e8565SEmmanuel Vadot 40*e67e8565SEmmanuel Vadot dma-names: 41*e67e8565SEmmanuel Vadot items: 42*e67e8565SEmmanuel Vadot - const: rx 43*e67e8565SEmmanuel Vadot - const: tx 44*e67e8565SEmmanuel Vadot 45*e67e8565SEmmanuel Vadot nvidia,fixed-parent-rate: 46*e67e8565SEmmanuel Vadot description: | 47*e67e8565SEmmanuel Vadot Specifies whether board prefers parent clock to stay at a fixed rate. 48*e67e8565SEmmanuel Vadot This allows multiple Tegra20 audio components work simultaneously by 49*e67e8565SEmmanuel Vadot limiting number of supportable audio rates. 50*e67e8565SEmmanuel Vadot type: boolean 51*e67e8565SEmmanuel Vadot 52*e67e8565SEmmanuel Vadotrequired: 53*e67e8565SEmmanuel Vadot - compatible 54*e67e8565SEmmanuel Vadot - reg 55*e67e8565SEmmanuel Vadot - resets 56*e67e8565SEmmanuel Vadot - reset-names 57*e67e8565SEmmanuel Vadot - interrupts 58*e67e8565SEmmanuel Vadot - clocks 59*e67e8565SEmmanuel Vadot - dmas 60*e67e8565SEmmanuel Vadot - dma-names 61*e67e8565SEmmanuel Vadot 62*e67e8565SEmmanuel VadotadditionalProperties: false 63*e67e8565SEmmanuel Vadot 64*e67e8565SEmmanuel Vadotexamples: 65*e67e8565SEmmanuel Vadot - | 66*e67e8565SEmmanuel Vadot i2s@70002800 { 67*e67e8565SEmmanuel Vadot compatible = "nvidia,tegra20-i2s"; 68*e67e8565SEmmanuel Vadot reg = <0x70002800 0x200>; 69*e67e8565SEmmanuel Vadot interrupts = <45>; 70*e67e8565SEmmanuel Vadot clocks = <&tegra_car 11>; 71*e67e8565SEmmanuel Vadot resets = <&tegra_car 11>; 72*e67e8565SEmmanuel Vadot reset-names = "i2s"; 73*e67e8565SEmmanuel Vadot dmas = <&apbdma 21>, <&apbdma 21>; 74*e67e8565SEmmanuel Vadot dma-names = "rx", "tx"; 75*e67e8565SEmmanuel Vadot }; 76*e67e8565SEmmanuel Vadot 77*e67e8565SEmmanuel Vadot... 78