| Tom Rini | 53633a8 | 2024-02-29 12:33:36 -0500 | [diff] [blame] | 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 | |
| 7 | title: NVIDIA Tegra20 I2S Controller |
| 8 | |
| 9 | description: | |
| 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 | |
| 14 | maintainers: |
| 15 | - Thierry Reding <treding@nvidia.com> |
| 16 | - Jon Hunter <jonathanh@nvidia.com> |
| 17 | |
| 18 | properties: |
| 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 | |
| 52 | required: |
| 53 | - compatible |
| 54 | - reg |
| 55 | - resets |
| 56 | - reset-names |
| 57 | - interrupts |
| 58 | - clocks |
| 59 | - dmas |
| 60 | - dma-names |
| 61 | |
| 62 | additionalProperties: false |
| 63 | |
| 64 | examples: |
| 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 | ... |