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torvalds
GitHub Repository: torvalds/linux
 Path: blob/master/Documentation/devicetree/bindings/i2c/hisilicon,ascend910-i2c.yaml
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# SPDX-License-Identifier: (GPL-2.0 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/hisilicon,ascend910-i2c.yaml#

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

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title: HiSilicon common I2C controller

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maintainers:

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  - Yicong Yang <yangyicong@hisilicon.com>

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description:

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  The HiSilicon common I2C controller can be used for many different

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  types of SoC such as Huawei Ascend AI series chips.

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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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    const: hisilicon,ascend910-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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  clocks:

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    maxItems: 1

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  clock-frequency:

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    default: 400000

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  i2c-sda-falling-time-ns:

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    default: 343

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  i2c-scl-falling-time-ns:

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    default: 203

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  i2c-sda-hold-time-ns:

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    default: 830

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  i2c-scl-rising-time-ns:

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    default: 365

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  i2c-digital-filter-width-ns:

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    default: 0

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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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    #include <dt-bindings/interrupt-controller/arm-gic.h>

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    i2c@38b0000 {

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      compatible = "hisilicon,ascend910-i2c";

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      reg = <0x38b0000 0x10000>;

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      interrupts = <GIC_SPI 120 IRQ_TYPE_LEVEL_HIGH>;

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      i2c-sda-falling-time-ns = <56>;

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      i2c-scl-falling-time-ns = <56>;

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      i2c-sda-hold-time-ns = <56>;

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      i2c-scl-rising-time-ns = <56>;

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      i2c-digital-filter;

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      i2c-digital-filter-width-ns = <0x0>;

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      clocks = <&alg_clk>;

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      clock-frequency = <400000>;

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    };

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