| Tom Rini | 53633a8 | 2024-02-29 12:33:36 -0500 | [diff] [blame] | 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 | |
| 7 | title: HiSilicon common I2C controller |
| 8 | |
| 9 | maintainers: |
| 10 | - Yicong Yang <yangyicong@hisilicon.com> |
| 11 | |
| 12 | description: |
| 13 | The HiSilicon common I2C controller can be used for many different |
| 14 | types of SoC such as Huawei Ascend AI series chips. |
| 15 | |
| 16 | allOf: |
| 17 | - $ref: /schemas/i2c/i2c-controller.yaml# |
| 18 | |
| 19 | properties: |
| 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 | |
| 50 | required: |
| 51 | - compatible |
| 52 | - reg |
| 53 | - interrupts |
| 54 | |
| 55 | unevaluatedProperties: false |
| 56 | |
| 57 | examples: |
| 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 | }; |