Orange Pi5 kernel

^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  1) # SPDX-License-Identifier: GPL-2.0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  2) %YAML 1.2
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  3) ---
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  4) $id: http://devicetree.org/schemas/dma/dma-common.yaml#
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  5) $schema: http://devicetree.org/meta-schemas/core.yaml#
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  6) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  7) title: DMA Engine Generic Binding
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  8) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  9) maintainers:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10)   - Vinod Koul <vkoul@kernel.org>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12) description:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13)   Generic binding to provide a way for a driver using DMA Engine to
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14)   retrieve the DMA request or channel information that goes from a
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15)   hardware device to a DMA controller.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17) select: false
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19) properties:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20)   "#dma-cells":
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21)     minimum: 1
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22)     # Should be enough
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23)     maximum: 255
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24)     description:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25)       Used to provide DMA controller specific information.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27)   dma-channel-mask:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28)     description:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29)       Bitmask of available DMA channels in ascending order that are
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30)       not reserved by firmware and are available to the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31)       kernel. i.e. first channel corresponds to LSB.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32)       The first item in the array is for channels 0-31, the second is for
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33)       channels 32-63, etc.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34)     $ref: /schemas/types.yaml#/definitions/uint32-array
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35)     items:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36)       minItems: 1
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37)       # Should be enough
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38)       maxItems: 255
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40)   dma-channels:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41)     $ref: /schemas/types.yaml#definitions/uint32
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42)     description:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43)       Number of DMA channels supported by the controller.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45)   dma-requests:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46)     $ref: /schemas/types.yaml#definitions/uint32
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47)     description:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48)       Number of DMA request signals supported by the controller.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 50) required:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51)   - "#dma-cells"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 52) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 53) additionalProperties: true