linux-kernel - Re: [PATCH 1/5] dt-bindings: phy: Add STM32MP25 COMBOPHY bindings

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Message-ID: <90ae7f29-19f8-4046-9b27-31739244e045@foss.st.com>
Date: Wed, 28 Aug 2024 10:16:14 +0200
From: Christian Bruel <christian.bruel@...s.st.com>
To: Krzysztof Kozlowski <krzk@...nel.org>, <vkoul@...nel.org>,
        <kishon@...nel.org>, <robh@...nel.org>, <krzk+dt@...nel.org>,
        <conor+dt@...nel.org>, <mcoquelin.stm32@...il.com>,
        <alexandre.torgue@...s.st.com>, <p.zabel@...gutronix.de>
CC: <linux-phy@...ts.infradead.org>, <devicetree@...r.kernel.org>,
        <linux-stm32@...md-mailman.stormreply.com>,
        <linux-arm-kernel@...ts.infradead.org>, <linux-kernel@...r.kernel.org>,
        <fabrice.gasnier@...s.st.com>
Subject: Re: [PATCH 1/5] dt-bindings: phy: Add STM32MP25 COMBOPHY bindings


On 8/27/24 15:23, Krzysztof Kozlowski wrote:
> On 27/08/2024 14:24, Christian Bruel wrote:
>> Document the bindings for STM32 COMBOPHY interface, used to support
>> the PCIe and USB3 stm32mp25 drivers.
>> Following entries can be used to tune caracterisation parameters
>>   - st,output-micro-ohms and st,output-vswing-microvolt bindings entries
>> to tune the impedance and voltage swing using discrete simulation results
>>   - st,rx-equalizer register to set the internal rx equalizer filter value.
>>
>> Reviewed-by: Rob Herring (Arm) <robh@...nel.org>
>> Signed-off-by: Christian Bruel <christian.bruel@...s.st.com>
> v1? Or v3?


sorry, forgot to update Subject: it is v3, will resend a v4 with your 
further comments

Regards

Christian

>
>> ---
>>   .../bindings/phy/st,stm32-combophy.yaml       | 144 ++++++++++++++++++
>>   1 file changed, 144 insertions(+)
>>   create mode 100644 Documentation/devicetree/bindings/phy/st,stm32-combophy.yaml
>>
>> diff --git a/Documentation/devicetree/bindings/phy/st,stm32-combophy.yaml b/Documentation/devicetree/bindings/phy/st,stm32-combophy.yaml
>> new file mode 100644
>> index 000000000000..c33a843b83a3
>> --- /dev/null
>> +++ b/Documentation/devicetree/bindings/phy/st,stm32-combophy.yaml
> Filename matching compatible.

ok

>
>> @@ -0,0 +1,144 @@
>> +# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
>> +%YAML 1.2
>> +---
>> +$id: http://devicetree.org/schemas/phy/st,stm32-combophy.yaml#
>> +$schema: http://devicetree.org/meta-schemas/core.yaml#
>> +
>> +title: STMicroelectronics STM32MP25 USB3/PCIe COMBOPHY
>> +
>> +maintainers:
>> +  - Christian Bruel <christian.bruel@...s.st.com>
>> +
>> +description:
>> +  Single lane PHY shared (exclusive) between the USB3 and PCIe controllers.
>> +  Supports 5Gbit/s for USB3 and PCIe gen2 or 2.5Gbit/s for PCIe gen1.
>> +
>> +properties:
>> +  compatible:
>> +    const: st,stm32mp25-combophy
>> +
>> +  reg:
>> +    maxItems: 1
>> +
>> +  "#phy-cells":
>> +    const: 1
>> +    description: |
>> +      The cells contain the following arguments.
>> +
>> +      - description: The PHY type
> That's some sort of mess. Is it schema within description or schema? Why
> two descriptions?

yes, indeed

>> +          enum:
>> +            - PHY_TYPE_USB3
>> +            - PHY_TYPE_PCIE
>> +
> ...
>
>> +required:
>> +  - compatible
>> +  - reg
>> +  - st,syscfg
>> +  - '#phy-cells'
>> +  - resets
>> +  - reset-names
>> +  - clocks
>> +  - clock-names
>> +
>> +allOf:
>> +  - if:
>> +      required:
>> +        - wakeup-source
>> +    then:
>> +      anyOf:
>> +        - required: [interrupts]
>> +        - required: [interrupts-extended]
>> +
> I do not see any improvements.
>
> The tag you received was CONDITIONAL. If you do not apply the comments,
> you cannot just apply the tag.

my mistake again.


> Best regards,
> Krzysztof
>