# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) %YAML 1.2 --- $id: http://devicetree.org/schemas/sound/nvidia,tegra20-i2s.yaml# $schema: http://devicetree.org/meta-schemas/core.yaml# title: NVIDIA Tegra20 I2S Controller description: | The I2S Controller streams synchronous serial audio data between system memory and an external audio device. The controller supports the I2S Left Justified Mode, Right Justified Mode, and DSP mode formats. maintainers: - Thierry Reding - Jon Hunter properties: compatible: const: nvidia,tegra20-i2s reg: maxItems: 1 resets: maxItems: 1 reset-names: const: i2s interrupts: maxItems: 1 clocks: minItems: 1 dmas: minItems: 2 dma-names: items: - const: rx - const: tx nvidia,fixed-parent-rate: description: | Specifies whether board prefers parent clock to stay at a fixed rate. This allows multiple Tegra20 audio components work simultaneously by limiting number of supportable audio rates. type: boolean required: - compatible - reg - resets - reset-names - interrupts - clocks - dmas - dma-names additionalProperties: false examples: - | i2s@70002800 { compatible = "nvidia,tegra20-i2s"; reg = <0x70002800 0x200>; interrupts = <45>; clocks = <&tegra_car 11>; resets = <&tegra_car 11>; reset-names = "i2s"; dmas = <&apbdma 21>, <&apbdma 21>; dma-names = "rx", "tx"; }; ...