| # Copyright 2024 NXP |
| # SPDX-License-Identifier: Apache-2.0 |
| |
| description: NXP enhanced Direct Memory Access (eDMA) node |
| |
| compatible: "nxp,edma" |
| |
| include: [dma-controller.yaml, base.yaml] |
| |
| properties: |
| reg: |
| required: true |
| valid-channels: |
| type: array |
| description: | |
| Use this property to specify which channel indexes are |
| to be considered valid. The difference between this |
| property and "dma-channels" is the fact that this |
| property allows you to have "gaps" between the channel |
| indexes. This is useful in cases where you know you're |
| not going to be using all of the possible channels, thus |
| leading to a more readable DTS. Of course, this property |
| and "dma-channels" are mutually exclusive, meaning you |
| can't specify both properties as this will lead to a |
| BUILD_ASSERT() failure. |
| "#dma-cells": |
| const: 2 |
| |
| # IMPORTANT: if your EDMA version doesn't support channel MUX-ing please |
| # leave the MUX cell as 0. This is not mandatory for the driver as the |
| # MUX value will be ignored in this case but all entities using EDMA should |
| # be consistent in this regard. |
| dma-cells: |
| - channel |
| - mux |
