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# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
%YAML 1.2
---
$id: http://devicetree.org/schemas/dma/nvidia,tegra210-adma.yaml#
$schema: http://devicetree.org/meta-schemas/core.yaml#
title: NVIDIA Tegra Audio DMA (ADMA) controller
description: |
The Tegra Audio DMA controller is used for transferring data
between system memory and the Audio Processing Engine (APE).
maintainers:
- Jon Hunter <jonathanh@nvidia.com>
allOf:
- $ref: dma-controller.yaml#
properties:
compatible:
oneOf:
- enum:
- nvidia,tegra210-adma
- nvidia,tegra186-adma
- items:
- enum:
- nvidia,tegra234-adma
- nvidia,tegra194-adma
- const: nvidia,tegra186-adma
reg:
maxItems: 1
interrupts:
description: |
Should contain all of the per-channel DMA interrupts in
ascending order with respect to the DMA channel index.
minItems: 1
maxItems: 32
clocks:
description: Must contain one entry for the ADMA module clock
maxItems: 1
clock-names:
const: d_audio
"#dma-cells":
description: |
The first cell denotes the receive/transmit request number and
should be between 1 and the maximum number of requests supported.
This value corresponds to the RX/TX_REQUEST_SELECT fields in the
ADMA_CHn_CTRL register.
const: 1
dma-channel-mask:
maxItems: 1
required:
- compatible
- reg
- interrupts
- clocks
- clock-names
additionalProperties: false
examples:
- |
#include <dt-bindings/interrupt-controller/arm-gic.h>
#include<dt-bindings/clock/tegra210-car.h>
dma-controller@702e2000 {
compatible = "nvidia,tegra210-adma";
reg = <0x702e2000 0x2000>;
interrupt-parent = <&tegra_agic>;
interrupts = <GIC_SPI 24 IRQ_TYPE_LEVEL_HIGH>,
<GIC_SPI 25 IRQ_TYPE_LEVEL_HIGH>,
<GIC_SPI 26 IRQ_TYPE_LEVEL_HIGH>,
<GIC_SPI 27 IRQ_TYPE_LEVEL_HIGH>,
<GIC_SPI 28 IRQ_TYPE_LEVEL_HIGH>,
<GIC_SPI 29 IRQ_TYPE_LEVEL_HIGH>,
<GIC_SPI 30 IRQ_TYPE_LEVEL_HIGH>,
<GIC_SPI 31 IRQ_TYPE_LEVEL_HIGH>,
<GIC_SPI 32 IRQ_TYPE_LEVEL_HIGH>,
<GIC_SPI 33 IRQ_TYPE_LEVEL_HIGH>,
<GIC_SPI 34 IRQ_TYPE_LEVEL_HIGH>,
<GIC_SPI 35 IRQ_TYPE_LEVEL_HIGH>,
<GIC_SPI 36 IRQ_TYPE_LEVEL_HIGH>,
<GIC_SPI 37 IRQ_TYPE_LEVEL_HIGH>,
<GIC_SPI 38 IRQ_TYPE_LEVEL_HIGH>,
<GIC_SPI 39 IRQ_TYPE_LEVEL_HIGH>,
<GIC_SPI 40 IRQ_TYPE_LEVEL_HIGH>,
<GIC_SPI 41 IRQ_TYPE_LEVEL_HIGH>,
<GIC_SPI 42 IRQ_TYPE_LEVEL_HIGH>,
<GIC_SPI 43 IRQ_TYPE_LEVEL_HIGH>,
<GIC_SPI 44 IRQ_TYPE_LEVEL_HIGH>,
<GIC_SPI 45 IRQ_TYPE_LEVEL_HIGH>;
clocks = <&tegra_car TEGRA210_CLK_D_AUDIO>;
clock-names = "d_audio";
#dma-cells = <1>;
};
...
|
