| Tom Rini | 53633a8 | 2024-02-29 12:33:36 -0500 | [diff] [blame^] | 1 | # SPDX-License-Identifier: GPL-2.0 |
| 2 | %YAML 1.2 |
| 3 | --- |
| 4 | $id: http://devicetree.org/schemas/dma/arm,pl330.yaml# |
| 5 | $schema: http://devicetree.org/meta-schemas/core.yaml# |
| 6 | |
| 7 | title: ARM PrimeCell PL330 DMA Controller |
| 8 | |
| 9 | maintainers: |
| 10 | - Vinod Koul <vkoul@kernel.org> |
| 11 | |
| 12 | description: |
| 13 | The ARM PrimeCell PL330 DMA controller can move blocks of memory contents |
| 14 | between memory and peripherals or memory to memory. |
| 15 | |
| 16 | # We need a select here so we don't match all nodes with 'arm,primecell' |
| 17 | select: |
| 18 | properties: |
| 19 | compatible: |
| 20 | contains: |
| 21 | const: arm,pl330 |
| 22 | required: |
| 23 | - compatible |
| 24 | |
| 25 | allOf: |
| 26 | - $ref: dma-controller.yaml# |
| 27 | - $ref: /schemas/arm/primecell.yaml# |
| 28 | |
| 29 | properties: |
| 30 | compatible: |
| 31 | items: |
| 32 | - enum: |
| 33 | - arm,pl330 |
| 34 | - const: arm,primecell |
| 35 | |
| 36 | reg: |
| 37 | maxItems: 1 |
| 38 | |
| 39 | interrupts: |
| 40 | minItems: 1 |
| 41 | maxItems: 32 |
| 42 | description: A single combined interrupt or an interrupt per event |
| 43 | |
| 44 | '#dma-cells': |
| 45 | const: 1 |
| 46 | description: Contains the DMA request number for the consumer |
| 47 | |
| 48 | arm,pl330-broken-no-flushp: |
| 49 | type: boolean |
| 50 | description: quirk for avoiding to execute DMAFLUSHP |
| 51 | |
| 52 | arm,pl330-periph-burst: |
| 53 | type: boolean |
| 54 | description: quirk for performing burst transfer only |
| 55 | |
| 56 | dma-coherent: true |
| 57 | |
| 58 | iommus: |
| 59 | minItems: 1 |
| 60 | maxItems: 9 |
| 61 | description: Up to 1 IOMMU entry per DMA channel for writes and 1 |
| 62 | IOMMU entry for reads. |
| 63 | |
| 64 | power-domains: |
| 65 | maxItems: 1 |
| 66 | |
| 67 | resets: |
| 68 | minItems: 1 |
| 69 | maxItems: 2 |
| 70 | |
| 71 | reset-names: |
| 72 | minItems: 1 |
| 73 | items: |
| 74 | - const: dma |
| 75 | - const: dma-ocp |
| 76 | |
| 77 | required: |
| 78 | - compatible |
| 79 | - reg |
| 80 | - interrupts |
| 81 | |
| 82 | unevaluatedProperties: false |
| 83 | |
| 84 | examples: |
| 85 | - | |
| 86 | dma-controller@12680000 { |
| 87 | compatible = "arm,pl330", "arm,primecell"; |
| 88 | reg = <0x12680000 0x1000>; |
| 89 | interrupts = <99>; |
| 90 | #dma-cells = <1>; |
| 91 | }; |
| 92 | ... |