linux-kernel - Re: [PATCH next v7 2/2] dt-bindings: i2c: add entry for hisilicon,i2c-ascend910

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Message-ID: <4b6256e6-6f06-5d6e-6cc3-d3f3649f0ac6@huawei.com>
Date:   Sat, 29 Oct 2022 19:53:25 +0800
From:   chenweilong <chenweilong@...wei.com>
To:     Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>,
        <yangyicong@...ilicon.com>, <xuwei5@...wei.com>, <wsa@...nel.org>,
        <robh+dt@...nel.org>, <robh@...nel.org>
CC:     <linux-i2c@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
        <devicetree@...r.kernel.org>
Subject: Re: [PATCH next v7 2/2] dt-bindings: i2c: add entry for
 hisilicon,i2c-ascend910

On 2022/10/29 7:45, Krzysztof Kozlowski wrote:
> On 20/10/2022 23:56, Weilong Chen wrote:
>> Add the new compatible for HiSilicon i2c.
>>
>> Signed-off-by: Weilong Chen <chenweilong@...wei.com>
>> ---
>> Change since v6:
>> - Rename to hisilicon,i2c-ascend910.yaml
>> - Change all IIC to I2C
>> - Add maintainer name
>> Link: https://lore.kernel.org/lkml/7520818b-de40-7f2a-1b03-b1dcd29a2023@huawei.com/T/#ma89d78cef45e7ac6f2c6251ed958e8658e5c1eb5
>>
> Please use scripts/get_maintainers.pl to get a list of necessary people
> and lists to CC.  It might happen, that command when run on an older
> kernel, gives you outdated entries.  Therefore please be sure you base
> your patches on recent Linux kernel.

Thanks for review, I'll fix this.

>
>
>>  .../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..f4f532d69670
>> --- /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
>> +---
>> +$id: "http://devicetree.org/schemas/i2c/hisilicon,i2c-xxx.yaml#"
>> +$schema: "http://devicetree.org/meta-schemas/core.yaml#"
> Drop quotes
>
>> +
>> +title: HiSilicon common I2C controller Device Tree Bindings
> Drop "Device Tree bindings"
>
>> +
>> +maintainers:
>> +  - Yicong Yang <yangyicong@...ilicon.com>
>> +
>> +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.
> Description goes to top level description.
>
>> +
>> +  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@...8b0000 {
>> +      compatible = "hisilicon,i2c-ascend910";
>> +      reg = <0x38b0000 0x10000>;
>> +      interrupts = <0x0 120 0x4>;
> Use defines for constants.
>
> Best regards,
> Krzysztof
>
> .