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

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

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title: ASPEED I2C on the AST24XX, AST25XX, and AST26XX SoCs

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maintainers:

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  - Rayn Chen <rayn_chen@aspeedtech.com>

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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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    enum:

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      - aspeed,ast2400-i2c-bus

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      - aspeed,ast2500-i2c-bus

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      - aspeed,ast2600-i2c-bus

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  reg:

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    minItems: 1

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    items:

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      - description: address offset and range of bus

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      - description: address offset and range of bus buffer

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  interrupts:

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    maxItems: 1

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  clocks:

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    maxItems: 1

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    description:

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      root clock of bus, should reference the APB

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      clock in the second cell

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  resets:

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    maxItems: 1

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  bus-frequency:

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    minimum: 500

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    maximum: 4000000

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    default: 100000

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    description: frequency of the bus clock in Hz defaults to 100 kHz when not

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      specified

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required:

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  - reg

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  - compatible

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  - clocks

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  - resets

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unevaluatedProperties: false

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examples:

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  - |

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    #include <dt-bindings/clock/aspeed-clock.h>

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    i2c@40 {

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      #address-cells = <1>;

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      #size-cells = <0>;

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      compatible = "aspeed,ast2500-i2c-bus";

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      reg = <0x40 0x40>;

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      clocks = <&syscon ASPEED_CLK_APB>;

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      resets = <&syscon ASPEED_RESET_I2C>;

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      bus-frequency = <100000>;

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      interrupts = <0>;

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      interrupt-parent = <&i2c_ic>;

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    };

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