Add the new compatible for HiSilicon i2c. Signed-off-by: Weilong Chen <chenweilong@xxxxxxxxxx> --- Change since v7: - Fix yamllint errors, rename i2c-xxx to i2c-ascend910 Link: https://lore.kernel.org/all/166635752527.3428089.707277745439761591.robh@xxxxxxxxxx/ .../bindings/i2c/hisilicon,i2c-ascend910.yaml | 70 +++++++++++++++++++ MAINTAINERS | 1 + 2 files changed, 71 insertions(+) create mode 100644 Documentation/devicetree/bindings/i2c/hisilicon,i2c-ascend910.yaml diff --git a/Documentation/devicetree/bindings/i2c/hisilicon,i2c-ascend910.yaml b/Documentation/devicetree/bindings/i2c/hisilicon,i2c-ascend910.yaml new file mode 100644 index 000000000000..918825a3026b --- /dev/null +++ b/Documentation/devicetree/bindings/i2c/hisilicon,i2c-ascend910.yaml @@ -0,0 +1,70 @@ +# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause) +%YAML 1.2 +--- +$id: "http://devicetree.org/schemas/i2c/hisilicon,i2c-ascend910.yaml#"; +$schema: "http://devicetree.org/meta-schemas/core.yaml#"; + +title: HiSilicon common I2C controller Device Tree Bindings + +maintainers: + - Yicong Yang <yangyicong@xxxxxxxxxxxxx> + +allOf: + - $ref: /schemas/i2c/i2c-controller.yaml# + +properties: + compatible: + const: hisilicon,i2c-ascend910 + description: + The HiSilicon common I2C controller can be used for many different + types of SoC such as Huawei Ascend AI series chips. + + reg: + maxItems: 1 + + interrupts: + maxItems: 1 + + clocks: + maxItems: 1 + + clock-frequency: + default: 400000 + + i2c-sda-falling-time-ns: + default: 343 + + i2c-scl-falling-time-ns: + default: 203 + + i2c-sda-hold-time-ns: + default: 830 + + i2c-scl-rising-time-ns: + default: 365 + + i2c-digital-filter-width-ns: + default: 0 + +required: + - compatible + - reg + - interrupts + +unevaluatedProperties: false + +examples: + - | + i2c@5038b0000 { + compatible = "hisilicon,i2c-ascend910"; + reg = <0x38b0000 0x10000>; + interrupts = <0x0 120 0x4>; + i2c-sda-falling-time-ns = <56>; + i2c-scl-falling-time-ns = <56>; + i2c-sda-hold-time-ns = <56>; + i2c-scl-rising-time-ns = <56>; + i2c-digital-filter; + i2c-digital-filter-width-ns = <0x0>; + clocks = <&alg_clk>; + clock-frequency = <400000>; + }; diff --git a/MAINTAINERS b/MAINTAINERS index ad32dc9c4822..5e5e4a3f5ada 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -9211,6 +9211,7 @@ M: Yicong Yang <yangyicong@xxxxxxxxxxxxx> L: linux-i2c@xxxxxxxxxxxxxxx S: Maintained W: https://www.hisilicon.com +F: Documentation/devicetree/bindings/i2c/hisilicon,i2c-ascend910.yaml F: drivers/i2c/busses/i2c-hisi.c HISILICON LPC BUS DRIVER -- 2.31.GIT
