74 lines · yaml
1# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)2%YAML 1.23---4$id: http://devicetree.org/schemas/i2c/hisilicon,ascend910-i2c.yaml#5$schema: http://devicetree.org/meta-schemas/core.yaml#6 7title: HiSilicon common I2C controller8 9maintainers:10 - Yicong Yang <yangyicong@hisilicon.com>11 12description:13 The HiSilicon common I2C controller can be used for many different14 types of SoC such as Huawei Ascend AI series chips.15 16allOf:17 - $ref: /schemas/i2c/i2c-controller.yaml#18 19properties:20 compatible:21 const: hisilicon,ascend910-i2c22 23 reg:24 maxItems: 125 26 interrupts:27 maxItems: 128 29 clocks:30 maxItems: 131 32 clock-frequency:33 default: 40000034 35 i2c-sda-falling-time-ns:36 default: 34337 38 i2c-scl-falling-time-ns:39 default: 20340 41 i2c-sda-hold-time-ns:42 default: 83043 44 i2c-scl-rising-time-ns:45 default: 36546 47 i2c-digital-filter-width-ns:48 default: 049 50required:51 - compatible52 - reg53 - interrupts54 55unevaluatedProperties: false56 57examples:58 - |59 #include <dt-bindings/interrupt-controller/arm-gic.h>60 61 i2c@38b0000 {62 compatible = "hisilicon,ascend910-i2c";63 reg = <0x38b0000 0x10000>;64 interrupts = <GIC_SPI 120 IRQ_TYPE_LEVEL_HIGH>;65 i2c-sda-falling-time-ns = <56>;66 i2c-scl-falling-time-ns = <56>;67 i2c-sda-hold-time-ns = <56>;68 i2c-scl-rising-time-ns = <56>;69 i2c-digital-filter;70 i2c-digital-filter-width-ns = <0x0>;71 clocks = <&alg_clk>;72 clock-frequency = <400000>;73 };74