| # 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>; |
| }; |
| }; |
| |
| ... |
