linux-kernel - Re: [PATCH v4 2/3] dt-bindings: phy: rockchip,inno-usb2phy: add rk3576

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Message-ID: <3a45f6c8-bf2f-4227-b03a-4cf07a43b8a3@kernel.org>
Date: Tue, 8 Oct 2024 16:36:49 +0200
From: Krzysztof Kozlowski <krzk@...nel.org>
To: Frank Wang <frawang.cn@...il.com>
Cc: vkoul@...nel.org, kishon@...nel.org, robh@...nel.org, krzk+dt@...nel.org,
 conor+dt@...nel.org, heiko@...ech.de, linux-phy@...ts.infradead.org,
 devicetree@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
 linux-kernel@...r.kernel.org, linux-rockchip@...ts.infradead.org,
 william.wu@...k-chips.com, tim.chen@...k-chips.com, frank.wang@...k-chips.com
Subject: Re: [PATCH v4 2/3] dt-bindings: phy: rockchip,inno-usb2phy: add
 rk3576

On 08/10/2024 05:04, Frank Wang wrote:
> Hi Krzysztof,
> 
> On 2024/9/30 3:36, Krzysztof Kozlowski wrote:
>> On Sun, Sep 29, 2024 at 02:10:24PM +0800, Frank Wang wrote:
>>> From: Frank Wang <frank.wang@...k-chips.com>
>>>
>>> Add compatible for the USB2 phy in the Rockchip RK3576 SoC.
>>>
>>> This change also refactor the clocks list as there are new clocks
>>> adding used for the USB MMU in RK3576 SoC.
>>>
>>> Signed-off-by: Frank Wang <frank.wang@...k-chips.com>
>>> ---
>>> Changelog:
>>> v4:
>>>   - refactor the clocks list used if:then:
>>>
>>> v3:
>>>   - narrowed rk3576 clocks by compatible property.
>>>
>>> v2:
>>>   - Categorize clock names by oneOf keyword.
>>>
>>> v1:
>>>   - https://patchwork.kernel.org/project/linux-phy/patch/20240923025326.10467-1-frank.wang@rock-chips.com/
>>>
>>>   .../bindings/phy/rockchip,inno-usb2phy.yaml   | 46 ++++++++++++++++++-
>>>   1 file changed, 44 insertions(+), 2 deletions(-)
>>>
>>> diff --git a/Documentation/devicetree/bindings/phy/rockchip,inno-usb2phy.yaml b/Documentation/devicetree/bindings/phy/rockchip,inno-usb2phy.yaml
>>> index 5254413137c6..fc2c03d01a20 100644
>>> --- a/Documentation/devicetree/bindings/phy/rockchip,inno-usb2phy.yaml
>>> +++ b/Documentation/devicetree/bindings/phy/rockchip,inno-usb2phy.yaml
>>> @@ -20,6 +20,7 @@ properties:
>>>         - rockchip,rk3366-usb2phy
>>>         - rockchip,rk3399-usb2phy
>>>         - rockchip,rk3568-usb2phy
>>> +      - rockchip,rk3576-usb2phy
>>>         - rockchip,rk3588-usb2phy
>>>         - rockchip,rv1108-usb2phy
>>>   
>>> @@ -34,10 +35,12 @@ properties:
>>>       const: 0
>>>   
>>>     clocks:
>>> -    maxItems: 1
>>> +    minItems: 1
>>> +    maxItems: 3
>>>   
>>>     clock-names:
>>> -    const: phyclk
>>> +    minItems: 1
>>> +    maxItems: 3
>>>   
>>>     assigned-clocks:
>>>       description:
>>> @@ -172,6 +175,45 @@ allOf:
>>>               - interrupts
>>>               - interrupt-names
>>>   
>>> +  - if:
>>> +      properties:
>>> +        compatible:
>>> +          contains:
>>> +            enum:
>>> +              - rockchip,px30-usb2phy
>>> +              - rockchip,rk3128-usb2phy
>>> +              - rockchip,rk3228-usb2phy
>>> +              - rockchip,rk3308-usb2phy
>>> +              - rockchip,rk3328-usb2phy
>>> +              - rockchip,rk3366-usb2phy
>>> +              - rockchip,rk3399-usb2phy
>>> +              - rockchip,rk3568-usb2phy
>>> +              - rockchip,rk3588-usb2phy
>>> +              - rockchip,rv1108-usb2phy
>>> +    then:
>>> +      properties:
>>> +        clocks:
>>> +          maxItems: 1
>>> +        clock-names:
>>> +          const: phyclk
>> maxItems: 1 instead
> 
> Sorry for late reply.
> 
> Do you mean use "maxItems: 1" instead of "const: phyclk" ?
> 
> 
>>> +
>>> +  - if:
>>> +      properties:
>>> +        compatible:
>>> +          contains:
>>> +            enum:
>>> +              - rockchip,rk3576-usb2phy
>>> +    then:
>>> +      properties:
>>> +        clocks:
>>> +          minItems: 3
>>> +          maxItems: 3
>>> +        clock-names:
>>> +          items:
>>> +            - const: phyclk
>>> +            - const: aclk
>>> +            - const: aclk_slv
>> This list goes to the top property with minItems: 1. Here you have only
>> minItems: 3.
>>
>> This way you have only one definition of entire list with same order of
>> items between variants.
> 
> For rockchip,rk3576-usb2phy, three clocks are all required, and the 
> driver does not care about the order of the clocks.
> 
> So is the above definition correct?

Of course not. What I wrote is correct.

Best regards,
Krzysztof