| Tom Rini | 53633a8 | 2024-02-29 12:33:36 -0500 | [diff] [blame] | 1 | # SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) |
| 2 | %YAML 1.2 |
| 3 | --- |
| 4 | $id: http://devicetree.org/schemas/virtio/mmio.yaml# |
| 5 | $schema: http://devicetree.org/meta-schemas/core.yaml# |
| 6 | |
| 7 | title: virtio memory mapped devices |
| 8 | |
| 9 | maintainers: |
| 10 | - Jean-Philippe Brucker <jean-philippe@linaro.org> |
| 11 | |
| 12 | description: |
| 13 | See https://www.oasis-open.org/committees/tc_home.php?wg_abbrev=virtio for |
| 14 | more details. |
| 15 | |
| 16 | properties: |
| 17 | compatible: |
| 18 | const: virtio,mmio |
| 19 | |
| 20 | reg: |
| 21 | maxItems: 1 |
| 22 | |
| 23 | dma-coherent: true |
| 24 | |
| 25 | interrupts: |
| 26 | maxItems: 1 |
| 27 | |
| 28 | '#iommu-cells': |
| 29 | description: Required when the node corresponds to a virtio-iommu device. |
| 30 | const: 1 |
| 31 | |
| 32 | iommus: |
| 33 | description: Required for devices making accesses thru an IOMMU. |
| 34 | maxItems: 1 |
| 35 | |
| 36 | wakeup-source: |
| 37 | type: boolean |
| 38 | description: Required for setting irq of a virtio_mmio device as wakeup source. |
| 39 | |
| 40 | required: |
| 41 | - compatible |
| 42 | - reg |
| 43 | - interrupts |
| 44 | |
| 45 | additionalProperties: |
| 46 | type: object |
| 47 | |
| 48 | examples: |
| 49 | - | |
| 50 | virtio@3000 { |
| 51 | compatible = "virtio,mmio"; |
| 52 | reg = <0x3000 0x100>; |
| 53 | interrupts = <41>; |
| 54 | |
| 55 | /* Device has endpoint ID 23 */ |
| 56 | iommus = <&viommu 23>; |
| 57 | }; |
| 58 | |
| 59 | viommu: iommu@3100 { |
| 60 | compatible = "virtio,mmio"; |
| 61 | reg = <0x3100 0x100>; |
| 62 | interrupts = <42>; |
| 63 | |
| 64 | #iommu-cells = <1>; |
| 65 | }; |
| 66 | |
| 67 | ... |