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99 lines
3.0 KiB
99 lines
3.0 KiB
# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) |
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%YAML 1.2 |
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--- |
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$id: http://devicetree.org/schemas/dma/nvidia,tegra210-adma.yaml# |
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$schema: http://devicetree.org/meta-schemas/core.yaml# |
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title: NVIDIA Tegra Audio DMA (ADMA) controller |
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description: | |
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The Tegra Audio DMA controller is used for transferring data |
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between system memory and the Audio Processing Engine (APE). |
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maintainers: |
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- Jon Hunter <[email protected]> |
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allOf: |
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- $ref: "dma-controller.yaml#" |
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properties: |
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compatible: |
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oneOf: |
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- enum: |
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- nvidia,tegra210-adma |
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- nvidia,tegra186-adma |
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- items: |
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- const: nvidia,tegra194-adma |
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- const: nvidia,tegra186-adma |
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reg: |
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maxItems: 1 |
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interrupts: |
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description: | |
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Should contain all of the per-channel DMA interrupts in |
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ascending order with respect to the DMA channel index. |
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minItems: 1 |
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maxItems: 32 |
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clocks: |
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description: Must contain one entry for the ADMA module clock |
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maxItems: 1 |
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clock-names: |
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const: d_audio |
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"#dma-cells": |
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description: | |
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The first cell denotes the receive/transmit request number and |
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should be between 1 and the maximum number of requests supported. |
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This value corresponds to the RX/TX_REQUEST_SELECT fields in the |
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ADMA_CHn_CTRL register. |
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const: 1 |
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required: |
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- compatible |
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- reg |
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- interrupts |
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- clocks |
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- clock-names |
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additionalProperties: false |
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examples: |
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- | |
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#include <dt-bindings/interrupt-controller/arm-gic.h> |
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#include<dt-bindings/clock/tegra210-car.h> |
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dma-controller@702e2000 { |
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compatible = "nvidia,tegra210-adma"; |
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reg = <0x702e2000 0x2000>; |
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interrupt-parent = <&tegra_agic>; |
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interrupts = <GIC_SPI 24 IRQ_TYPE_LEVEL_HIGH>, |
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<GIC_SPI 25 IRQ_TYPE_LEVEL_HIGH>, |
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<GIC_SPI 26 IRQ_TYPE_LEVEL_HIGH>, |
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<GIC_SPI 27 IRQ_TYPE_LEVEL_HIGH>, |
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<GIC_SPI 28 IRQ_TYPE_LEVEL_HIGH>, |
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<GIC_SPI 29 IRQ_TYPE_LEVEL_HIGH>, |
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<GIC_SPI 30 IRQ_TYPE_LEVEL_HIGH>, |
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<GIC_SPI 31 IRQ_TYPE_LEVEL_HIGH>, |
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<GIC_SPI 32 IRQ_TYPE_LEVEL_HIGH>, |
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<GIC_SPI 33 IRQ_TYPE_LEVEL_HIGH>, |
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<GIC_SPI 34 IRQ_TYPE_LEVEL_HIGH>, |
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<GIC_SPI 35 IRQ_TYPE_LEVEL_HIGH>, |
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<GIC_SPI 36 IRQ_TYPE_LEVEL_HIGH>, |
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<GIC_SPI 37 IRQ_TYPE_LEVEL_HIGH>, |
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<GIC_SPI 38 IRQ_TYPE_LEVEL_HIGH>, |
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<GIC_SPI 39 IRQ_TYPE_LEVEL_HIGH>, |
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<GIC_SPI 40 IRQ_TYPE_LEVEL_HIGH>, |
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<GIC_SPI 41 IRQ_TYPE_LEVEL_HIGH>, |
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<GIC_SPI 42 IRQ_TYPE_LEVEL_HIGH>, |
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<GIC_SPI 43 IRQ_TYPE_LEVEL_HIGH>, |
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<GIC_SPI 44 IRQ_TYPE_LEVEL_HIGH>, |
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<GIC_SPI 45 IRQ_TYPE_LEVEL_HIGH>; |
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clocks = <&tegra_car TEGRA210_CLK_D_AUDIO>; |
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clock-names = "d_audio"; |
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#dma-cells = <1>; |
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}; |
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...
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