| # SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) |
| %YAML 1.2 |
| --- |
| $id: http://devicetree.org/schemas/sound/nvidia,tegra210-i2s.yaml# |
| $schema: http://devicetree.org/meta-schemas/core.yaml# |
| |
| title: Tegra210 I2S Controller Device Tree Bindings |
| |
| description: | |
| The Inter-IC Sound (I2S) controller implements full-duplex, |
| bi-directional and single direction point-to-point serial |
| interfaces. It can interface with I2S compatible devices. |
| I2S controller can operate both in master and slave mode. |
| |
| maintainers: |
| - Jon Hunter <jonathanh@nvidia.com> |
| - Sameer Pujar <spujar@nvidia.com> |
| |
| allOf: |
| - $ref: name-prefix.yaml# |
| |
| properties: |
| $nodename: |
| pattern: "^i2s@[0-9a-f]*$" |
| |
| compatible: |
| oneOf: |
| - const: nvidia,tegra210-i2s |
| - items: |
| - enum: |
| - nvidia,tegra194-i2s |
| - nvidia,tegra186-i2s |
| - const: nvidia,tegra210-i2s |
| |
| reg: |
| maxItems: 1 |
| |
| clocks: |
| minItems: 1 |
| items: |
| - description: I2S bit clock |
| - description: |
| Sync input clock, which can act as clock source to other I/O |
| modules in AHUB. The Tegra I2S driver sets this clock rate as |
| per bit clock rate. I/O module which wants to use this clock |
| as source, can mention this clock as parent in the DT bindings. |
| This is an optional clock entry, since it is only required when |
| some other I/O wants to reference from a particular I2Sx |
| instance. |
| |
| clock-names: |
| minItems: 1 |
| items: |
| - const: i2s |
| - const: sync_input |
| |
| assigned-clocks: |
| minItems: 1 |
| maxItems: 2 |
| |
| assigned-clock-parents: |
| minItems: 1 |
| maxItems: 2 |
| |
| assigned-clock-rates: |
| minItems: 1 |
| maxItems: 2 |
| |
| sound-name-prefix: |
| pattern: "^I2S[1-9]$" |
| |
| ports: |
| $ref: /schemas/graph.yaml#/properties/ports |
| properties: |
| port@0: |
| $ref: audio-graph-port.yaml# |
| unevaluatedProperties: false |
| description: | |
| I2S ACIF (Audio Client Interface) port connected to the |
| corresponding AHUB (Audio Hub) ACIF port. |
| |
| port@1: |
| $ref: audio-graph-port.yaml# |
| unevaluatedProperties: false |
| description: | |
| I2S DAP (Digital Audio Port) interface which can be connected |
| to external audio codec for playback or capture. |
| |
| required: |
| - compatible |
| - reg |
| - clocks |
| - clock-names |
| - assigned-clocks |
| - assigned-clock-parents |
| |
| additionalProperties: false |
| |
| examples: |
| - | |
| #include<dt-bindings/clock/tegra210-car.h> |
| |
| i2s@702d1000 { |
| compatible = "nvidia,tegra210-i2s"; |
| reg = <0x702d1000 0x100>; |
| clocks = <&tegra_car TEGRA210_CLK_I2S0>; |
| clock-names = "i2s"; |
| assigned-clocks = <&tegra_car TEGRA210_CLK_I2S0>; |
| assigned-clock-parents = <&tegra_car TEGRA210_CLK_PLL_A_OUT0>; |
| assigned-clock-rates = <1536000>; |
| sound-name-prefix = "I2S1"; |
| }; |
| |
| ... |
