| # SPDX-License-Identifier: GPL-2.0 |
| %YAML 1.2 |
| --- |
| $id: http://devicetree.org/schemas/dma/sifive,fu540-c000-pdma.yaml# |
| $schema: http://devicetree.org/meta-schemas/core.yaml# |
| |
| title: SiFive Unleashed Rev C000 Platform DMA |
| |
| maintainers: |
| - Green Wan <green.wan@sifive.com> |
| - Palmer Debbelt <palmer@sifive.com> |
| - Paul Walmsley <paul.walmsley@sifive.com> |
| |
| description: | |
| Platform DMA is a DMA engine of SiFive Unleashed. It supports 4 |
| channels. Each channel has 2 interrupts. One is for DMA done and |
| the other is for DME error. |
| |
| In different SoC, DMA could be attached to different IRQ line. |
| DT file need to be changed to meet the difference. For technical |
| doc, |
| |
| https://static.dev.sifive.com/FU540-C000-v1.0.pdf |
| |
| properties: |
| compatible: |
| items: |
| - const: sifive,fu540-c000-pdma |
| |
| reg: |
| maxItems: 1 |
| |
| interrupts: |
| minItems: 1 |
| maxItems: 8 |
| |
| '#dma-cells': |
| const: 1 |
| |
| required: |
| - compatible |
| - reg |
| - interrupts |
| - '#dma-cells' |
| |
| additionalProperties: false |
| |
| examples: |
| - | |
| dma@3000000 { |
| compatible = "sifive,fu540-c000-pdma"; |
| reg = <0x0 0x3000000 0x0 0x8000>; |
| interrupts = <23 24 25 26 27 28 29 30>; |
| #dma-cells = <1>; |
| }; |
| |
| ... |
