| # 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 <treding@nvidia.com> |
| - Jon Hunter <jonathanh@nvidia.com> |
| |
| 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"; |
| }; |
| |
| ... |
