# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
%YAML 1.2
---
$id:
http://devicetree.org/schemas/dma/fsl,elo-dma.yaml#
$schema:
http://devicetree.org/meta-schemas/core.yaml#
title: Freescale Elo DMA Controller
maintainers:
- J. Neuschäfer <j.ne@posteo.net>
description:
This is a little-endian 4-channel DMA controller, used in Freescale mpc83xx
series chips such as mpc8315, mpc8349, mpc8379 etc.
properties:
compatible:
items:
- enum:
- fsl,mpc8313-dma
- fsl,mpc8315-dma
- fsl,mpc8323-dma
- fsl,mpc8347-dma
- fsl,mpc8349-dma
- fsl,mpc8360-dma
- fsl,mpc8377-dma
- fsl,mpc8378-dma
- fsl,mpc8379-dma
- const: fsl,elo-dma
reg:
items:
- description:
DMA General Status Register, i.e. DGSR which contains status for
all the 4 DMA channels.
cell-index:
$ref: /schemas/types.yaml#/definitions/uint32
description: Controller index. 0 for controller @ 0x8100.
ranges: true
"#address-cells":
const: 1
"#size-cells":
const: 1
interrupts:
maxItems: 1
description: Controller interrupt.
required:
- compatible
- reg
patternProperties:
"^dma-channel@[0-9a-f]+$":
type: object
additionalProperties: false
properties:
compatible:
oneOf:
# native DMA channel
- items:
- enum:
- fsl,mpc8315-dma-channel
- fsl,mpc8323-dma-channel
- fsl,mpc8347-dma-channel
- fsl,mpc8349-dma-channel
- fsl,mpc8360-dma-channel
- fsl,mpc8377-dma-channel
- fsl,mpc8378-dma-channel
- fsl,mpc8379-dma-channel
- const: fsl,elo-dma-channel
# audio DMA channel, see fsl,ssi.yaml
- const: fsl,ssi-dma-channel
reg:
maxItems: 1
cell-index:
description: DMA channel index starts at 0.
interrupts:
maxItems: 1
description:
Per-channel interrupt. Only necessary if no controller interrupt has
been provided.
additionalProperties: false
examples:
- |
#include <dt-bindings/interrupt-controller/irq.h>
dma@82a8 {
compatible = "fsl,mpc8349-dma", "fsl,elo-dma";
reg = <0x82a8 4>;
#address-cells = <1>;
#size-cells = <1>;
ranges = <0 0x8100 0x1a4>;
interrupts = <71 IRQ_TYPE_LEVEL_LOW>;
cell-index = <0>;
dma-channel@0 {
compatible = "fsl,mpc8349-dma-channel", "fsl,elo-dma-channel";
reg = <0 0x80>;
cell-index = <0>;
interrupts = <71 IRQ_TYPE_LEVEL_LOW>;
};
dma-channel@80 {
compatible = "fsl,mpc8349-dma-channel", "fsl,elo-dma-channel";
reg = <0x80 0x80>;
cell-index = <1>;
interrupts = <71 IRQ_TYPE_LEVEL_LOW>;
};
dma-channel@100 {
compatible = "fsl,mpc8349-dma-channel", "fsl,elo-dma-channel";
reg = <0x100 0x80>;
cell-index = <2>;
interrupts = <71 IRQ_TYPE_LEVEL_LOW>;
};
dma-channel@180 {
compatible = "fsl,mpc8349-dma-channel", "fsl,elo-dma-channel";
reg = <0x180 0x80>;
cell-index = <3>;
interrupts = <71 IRQ_TYPE_LEVEL_LOW>;
};
};
...
