1# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause) 2%YAML 1.2 3--- 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 controller 8 9maintainers: 10 - Yicong Yang <yangyicong@hisilicon.com> 11 12description: 13 The HiSilicon common I2C controller can be used for many different 14 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-i2c 22 23 reg: 24 maxItems: 1 25 26 interrupts: 27 maxItems: 1 28 29 clocks: 30 maxItems: 1 31 32 clock-frequency: 33 default: 400000 34 35 i2c-sda-falling-time-ns: 36 default: 343 37 38 i2c-scl-falling-time-ns: 39 default: 203 40 41 i2c-sda-hold-time-ns: 42 default: 830 43 44 i2c-scl-rising-time-ns: 45 default: 365 46 47 i2c-digital-filter-width-ns: 48 default: 0 49 50required: 51 - compatible 52 - reg 53 - interrupts 54 55unevaluatedProperties: false 56 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