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torvalds
GitHub Repository: torvalds/linux
 Path: blob/master/Documentation/devicetree/bindings/i2c/i2c-mpc.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/i2c/i2c-mpc.yaml#

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

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title: I2C-Bus adapter for MPC824x/83xx/85xx/86xx/512x/52xx SoCs

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maintainers:

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  - Chris Packham <chris.packham@alliedtelesis.co.nz>

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allOf:

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  - $ref: /schemas/i2c/i2c-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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              - mpc5200-i2c

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              - fsl,mpc5200-i2c

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              - fsl,mpc5121-i2c

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              - fsl,mpc8313-i2c

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              - fsl,mpc8543-i2c

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              - fsl,mpc8544-i2c

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          - const: fsl-i2c

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      - items:

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          - const: fsl,mpc5200b-i2c

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          - const: fsl,mpc5200-i2c

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          - const: fsl-i2c

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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,preserve-clocking:

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

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    description: |

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      if defined, the clock settings from the bootloader are

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      preserved (not touched)

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  fsl,timeout:

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

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    deprecated: true

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    description: |

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      I2C bus timeout in microseconds

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  fsl,i2c-erratum-a004447:

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

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    description: |

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      Indicates the presence of QorIQ erratum A-004447, which

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      says that the standard i2c recovery scheme mechanism does

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      not work and an alternate implementation is needed.

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required:

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  - compatible

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  - reg

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  - interrupts

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unevaluatedProperties: false

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examples:

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  - |

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    /* MPC5121 based board */

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    i2c@1740 {

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        #address-cells = <1>;

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        #size-cells = <0>;

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        compatible = "fsl,mpc5121-i2c", "fsl-i2c";

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        reg = <0x1740 0x20>;

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        interrupts = <11 0x8>;

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        interrupt-parent = <&ipic>;

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        clock-frequency = <100000>;

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    };

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  - |

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    /* MPC5200B based board */

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    i2c@3d00 {

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        #address-cells = <1>;

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        #size-cells = <0>;

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        compatible = "fsl,mpc5200b-i2c", "fsl,mpc5200-i2c", "fsl-i2c";

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        reg = <0x3d00 0x40>;

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        interrupts = <2 15 0>;

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        interrupt-parent = <&mpc5200_pic>;

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        fsl,preserve-clocking;

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    };

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  - |

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    /* MPC8544 base board */

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    i2c@3100 {

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        #address-cells = <1>;

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        #size-cells = <0>;

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        compatible = "fsl,mpc8544-i2c", "fsl-i2c";

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        reg = <0x3100 0x100>;

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        interrupts = <43 2>;

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        interrupt-parent = <&mpic>;

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        clock-frequency = <400000>;

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        i2c-transfer-timeout-us = <10000>;

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    };

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...

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