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torvalds
GitHub Repository: torvalds/linux
 Path: blob/master/Documentation/devicetree/bindings/dma/fsl,imx-sdma.yaml
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# SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause

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%YAML 1.2

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---

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$id: http://devicetree.org/schemas/dma/fsl,imx-sdma.yaml#

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$schema: http://devicetree.org/meta-schemas/core.yaml#

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title: Freescale Smart Direct Memory Access (SDMA) Controller for i.MX

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maintainers:

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  - Joy Zou <joy.zou@nxp.com>

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allOf:

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  - $ref: dma-controller.yaml#

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properties:

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  compatible:

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    oneOf:

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      - items:

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          - enum:

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              - fsl,imx50-sdma

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              - fsl,imx51-sdma

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              - fsl,imx53-sdma

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              - fsl,imx6q-sdma

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              - fsl,imx7d-sdma

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          - const: fsl,imx35-sdma

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      - items:

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          - enum:

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              - fsl,imx6sx-sdma

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              - fsl,imx6sl-sdma

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          - const: fsl,imx6q-sdma

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      - items:

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          - const: fsl,imx6ul-sdma

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          - const: fsl,imx6q-sdma

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          - const: fsl,imx35-sdma

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      - items:

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          - const: fsl,imx6sll-sdma

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          - const: fsl,imx6ul-sdma

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      - items:

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          - const: fsl,imx8mq-sdma

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          - const: fsl,imx7d-sdma

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      - items:

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          - enum:

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              - fsl,imx8mp-sdma

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              - fsl,imx8mn-sdma

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              - fsl,imx8mm-sdma

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          - const: fsl,imx8mq-sdma

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      - items:

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          - enum:

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              - fsl,imx25-sdma

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              - fsl,imx31-sdma

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              - fsl,imx35-sdma

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  reg:

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    maxItems: 1

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  interrupts:

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    maxItems: 1

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  fsl,sdma-ram-script-name:

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    $ref: /schemas/types.yaml#/definitions/string

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    description: Should contain the full path of SDMA RAM scripts firmware.

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  "#dma-cells":

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    const: 3

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    description: |

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      The first cell: request/event ID

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      The second cell: peripheral types ID

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        enum:

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          - MCU domain SSI: 0

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          - Shared SSI: 1

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          - MMC: 2

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          - SDHC: 3

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          - MCU domain UART: 4

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          - Shared UART: 5

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          - FIRI: 6

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          - MCU domain CSPI: 7

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          - Shared CSPI: 8

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          - SIM: 9

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          - ATA: 10

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          - CCM: 11

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          - External peripheral: 12

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          - Memory Stick Host Controller: 13

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          - Shared Memory Stick Host Controller: 14

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          - DSP: 15

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          - Memory: 16

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          - FIFO type Memory: 17

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          - SPDIF: 18

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          - IPU Memory: 19

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          - ASRC: 20

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          - ESAI: 21

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          - SSI Dual FIFO: 22

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              description: needs firmware more than ver 2

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          - Shared ASRC: 23

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          - SAI: 24

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          - Multi SAI: 25

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          - HDMI Audio: 26

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          - I2C: 27

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       The third cell: transfer priority ID

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         enum:

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           - High: 0

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           - Medium: 1

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           - Low: 2

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  gpr:

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    $ref: /schemas/types.yaml#/definitions/phandle

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    description: The phandle to the General Purpose Register (GPR) node

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  fsl,sdma-event-remap:

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    $ref: /schemas/types.yaml#/definitions/uint32-matrix

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    maxItems: 2

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    items:

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      items:

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        - description: GPR register offset

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        - description: GPR register shift

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        - description: GPR register value

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    description: |

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      Register bits of sdma event remap, the format is <reg shift val>.

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      The order is <RX>, <TX>.

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  clocks:

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    maxItems: 2

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  clock-names:

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    items:

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      - const: ipg

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      - const: ahb

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  iram:

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    $ref: /schemas/types.yaml#/definitions/phandle

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    description: The phandle to the On-chip RAM (OCRAM) node.

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required:

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  - compatible

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  - reg

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  - interrupts

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  - fsl,sdma-ram-script-name

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additionalProperties: false

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examples:

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  - |

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    sdma: dma-controller@83fb0000 {

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      compatible = "fsl,imx51-sdma", "fsl,imx35-sdma";

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      reg = <0x83fb0000 0x4000>;

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      interrupts = <6>;

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      #dma-cells = <3>;

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      fsl,sdma-ram-script-name = "sdma-imx51.bin";

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    };

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...

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