linux-kernel - Re: [PATCH 1/2] dt-bindings: dwc2: Add bindings for new Ingenic SoCs.

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Date:   Fri, 30 Jul 2021 17:33:21 +0800
From:   Zhou Yanjie <zhouyanjie@...yeetech.com>
To:     Paul Cercueil <paul@...pouillou.net>
Cc:     gregkh@...uxfoundation.org, robh+dt@...nel.org,
        hminas@...opsys.com, devicetree@...r.kernel.org,
        linux-usb@...r.kernel.org, linux-mips@...r.kernel.org,
        linux-kernel@...r.kernel.org, dongsheng.qiu@...enic.com,
        aric.pzqi@...enic.com, rick.tyliu@...enic.com,
        sihui.liu@...enic.com, jun.jiang@...enic.com,
        sernia.zhou@...mail.com
Subject: Re: [PATCH 1/2] dt-bindings: dwc2: Add bindings for new Ingenic SoCs.

Hi Paul,

On 2021/7/25 下午6:31, Paul Cercueil wrote:
> Hi Zhou,
>
> Le sam., juil. 24 2021 at 20:52:30 +0800, Zhou Yanjie 
> <zhouyanjie@...yeetech.com> a écrit :
>> Hi Paul,
>>
>> On 2021/7/24 下午6:46, Paul Cercueil wrote:
>>> Hi Zhou,
>>>
>>> Le sam., juil. 24 2021 at 16:48:40 +0800, 周琰杰 (Zhou Yanjie) 
>>> <zhouyanjie@...yeetech.com> a écrit :
>>>> Add the dwc2 bindings for the JZ4775 SoC, the JZ4780 SoC, the X1000 
>>>> SoC,
>>>> the X1600 SoC, the X1830 SoC, and the X2000 SoC from Ingenic.
>>>>
>>>> Signed-off-by: 周琰杰 (Zhou Yanjie) <zhouyanjie@...yeetech.com>
>>>> ---
>>>>  Documentation/devicetree/bindings/usb/dwc2.yaml | 6 ++++++
>>>>  1 file changed, 6 insertions(+)
>>>>
>>>> diff --git a/Documentation/devicetree/bindings/usb/dwc2.yaml 
>>>> b/Documentation/devicetree/bindings/usb/dwc2.yaml
>>>> index 10c7d9b..e779d33 100644
>>>> --- a/Documentation/devicetree/bindings/usb/dwc2.yaml
>>>> +++ b/Documentation/devicetree/bindings/usb/dwc2.yaml
>>>> @@ -14,6 +14,12 @@ properties:
>>>>      oneOf:
>>>>        - const: brcm,bcm2835-usb
>>>>        - const: hisilicon,hi6220-usb
>>>> +      - const: ingenic,jz4775-otg
>>>> +      - const: ingenic,jz4780-otg
>>>> +      - const: ingenic,x1000-otg
>>>> +      - const: ingenic,x1600-otg
>>>> +      - const: ingenic,x1830-otg
>>>> +      - const: ingenic,x2000-otg
>>>
>>> I don't know if all these IPs are the exact same, but if they are, 
>>> they all should have "ingenic,jz4775-otg" as the fallback.
>>
>>
>> I'm not too sure whether they are exactly the same, but comparing the 
>> code in Ingenics SDK,
>>
>> the code of the USB part of jz4775, jz4780, and x1000 are the same, 
>> the code of the USB part
>>
>> of x1600 and x1830 are the same, and the USB part code of X2000 are 
>> different from all of them.
>
> In doubt - it's better to keep separate compatible strings, so this is 
> OK.


Sure.


Thanks and best regards!


>
> Cheers,
> -Paul
>