linux-kernel - Re: [PATCH 1/2] dt-bindings: soc: ti: pruss: Add clocks for ICSSG

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Message-ID: <1fa4323b-4cee-4dfe-9c68-55f4465999cf@kernel.org>
Date: Thu, 7 Nov 2024 13:21:09 +0100
From: Krzysztof Kozlowski <krzk@...nel.org>
To: MD Danish Anwar <danishanwar@...com>, conor+dt@...nel.org,
 krzk+dt@...nel.org, robh@...nel.org, ssantosh@...nel.org, nm@...com,
 Vignesh Raghavendra <vigneshr@...com>
Cc: devicetree@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
 linux-kernel@...r.kernel.org, s-anna@...com, kristo@...nel.org, srk@...com,
 Roger Quadros <rogerq@...nel.org>
Subject: Re: [PATCH 1/2] dt-bindings: soc: ti: pruss: Add clocks for ICSSG

On 07/11/2024 12:58, MD Danish Anwar wrote:
> 
> 
> On 07/11/24 5:16 pm, MD Danish Anwar wrote:
>>
>>
>> On 07/11/24 5:14 pm, Krzysztof Kozlowski wrote:
>>> On 07/11/2024 12:36, MD Danish Anwar wrote:
>>>>
>>>>
>>>> On 07/11/24 5:01 pm, Krzysztof Kozlowski wrote:
>>>>> On 07/11/2024 11:45, MD Danish Anwar wrote:
>>>>>> Add clocks, assigned-clocks and assigned-clock-parents for ICSSG
>>>>>
>>>>> Why? We see what you are doing from the diff, no point to repeat it. I
>>>>> don't understand why you are doing it.
>>>>>
>>>>>>
>>>>>> Signed-off-by: MD Danish Anwar <danishanwar@...com>
>>>>>> ---
>>>>>>  .../devicetree/bindings/soc/ti/ti,pruss.yaml          | 11 +++++++++++
>>>>>>  1 file changed, 11 insertions(+)
>>>>>>
>>>>>> diff --git a/Documentation/devicetree/bindings/soc/ti/ti,pruss.yaml b/Documentation/devicetree/bindings/soc/ti/ti,pruss.yaml
>>>>>> index 3cb1471cc6b6..cf4c5884d8be 100644
>>>>>> --- a/Documentation/devicetree/bindings/soc/ti/ti,pruss.yaml
>>>>>> +++ b/Documentation/devicetree/bindings/soc/ti/ti,pruss.yaml
>>>>>> @@ -92,6 +92,17 @@ properties:
>>>>>>      description: |
>>>>>>        This property is as per sci-pm-domain.txt.
>>>>>>  
>>>>>> +  clocks:
>>>>>> +    items:
>>>>>> +      - description: ICSSG_CORE Clock
>>>>>> +      - description: ICSSG_ICLK Clock
>>>>>> +
>>>>>> +  assigned-clocks:
>>>>>> +    maxItems: 1
>>>>>> +
>>>>>> +  assigned-clock-parents:
>>>>>> +    maxItems: 1
>>>>>
>>>>> Why? This is really not needed, so you need to explain why you are doing
>>>>> things differently than entire Linux kernel / DT bindings.
>>>>>
>>>>
>>>> I need to add this to the device tree node
>>>>
>>>> +		clocks = <&k3_clks 81 0>,  /* icssg0_core_clk */
>>>> +			 <&k3_clks 81 20>; /* icssg0_iclk */
>>>> +		assigned-clocks = <&k3_clks 81 0>;
>>>> +		assigned-clock-parents = <&k3_clks 81 2>;
>>>>
>>>> But without the above change in the binding I am getting below errors
>>>> while running dtbs check.
>>>>
>>>> /workdir/arch/arm64/boot/dts/ti/k3-am642-evm-nand.dtb: icssg@...00000:
>>>> 'assigned-clock-parents', 'assigned-clocks' do not match any of the
>>>> regexes: '^(pru|rtu|txpru)@[0-9a-f]+$', '^pa-stats@[a-f0-9]+$',
>>>> 'cfg@[a-f0-9]+$', 'iep@[a-f0-9]+$', 'interrupt-controller@[a-f0-9]+$',
>>>> 'mdio@[a-f0-9]+$', 'memories@[a-f0-9]+$', 'mii-g-rt@[a-f0-9]+$',
>>>> 'mii-rt@[a-f0-9]+$', 'pinctrl-[0-9]+'
>>>> +/workdir/arch/arm64/boot/dts/ti/k3-am642-evm-nand.dtb: icssg@...80000:
>>>> 'anyOf' conditional failed, one must be fixed:
>>>>
>>>> To fix this warning I added these in the binding and the warnings were
>>>> fixed.
>>>
>>> nah, cannot reproduce. Just be sure you work on recent kernel (last time
>>> you were sending it on some ancient stuff) and your packages are
>>> updated, including dt schema and other kernel dependencies.
>>>
>>
>> I have posted this series on the latest kernel. Base commit
>> 5b913f5d7d7fe0f567dea8605f21da6eaa1735fb
>>
>> Let me check if the schema is up to date or not. I will re test and
>> reply. Thanks for pointing it out.
>>
> 
> Krzysztof, I re-checked.
> I am on the latest kernel (commit
> 5b913f5d7d7fe0f567dea8605f21da6eaa1735fb (tag: next-20241106,
> origin/master, origin/HEAD)) and I am using the lastest dtschema v2024.9
> 
> ❯ python3 -m pip list|grep 'dtschema'
> dtschema                      2024.9
> 
> Still I am getting the below dtbs check errors while running `make
> CHECK_DTBS=y ti/k3-am642-evm.dtb` without the binding change.
> 
> Let me know if I am missing something else.
> 
> /home/danish/workspace/linux-next/arch/arm64/boot/dts/ti/k3-am642-evm.dtb:
> icssg@...00000: 'assigned-clock-parents', 'assigned-clocks', 'clocks' do

Wait, what? That's different error. You have clocks documented. To
remind: we talk about previous error so only, *only* assigned-clocks.

> not match any of the regexes: '^(pru|rtu|txpru)@[0-9a-f]+$',
> '^pa-stats@[a-f0-9]+$', 'cfg@[a-f0-9]+$', 'iep@[a-f0-9]+$',
> 'interrupt-controller@[a-f0-9]+$', 'mdio@[a-f0-9]+$',
> 'memories@[a-f0-9]+$', 'mii-g-rt@[a-f0-9]+$', 'mii-rt@[a-f0-9]+$',
> 'pinctrl-[0-9]+'
> 	from schema $id: http://devicetree.org/schemas/soc/ti/ti,pruss.yaml#
> /home/danish/workspace/linux-next/arch/arm64/boot/dts/ti/k3-am642-evm.dtb:
> icssg@...00000: 'assigned-clock-parents', 'assigned-clocks', 'clocks' do
> not match any of the regexes: '^(pru|rtu|txpru)@[0-9a-f]+$',
> '^pa-stats@[a-f0-9]+$', 'cfg@[a-f0-9]+$', 'iep@[a-f0-9]+$',
> 'interrupt-controller@[a-f0-9]+$', 'mdio@[a-f0-9]+$',
> 'memories@[a-f0-9]+$', 'mii-g-rt@[a-f0-9]+$', 'mii-rt@[a-f0-9]+$',
> 'pinctrl-[0-9]+'
> 	from schema $id: http://devicetree.org/schemas/soc/ti/ti,pruss.yaml#
> /home/danish/workspace/linux-next/arch/arm64/boot/dts/ti/k3-am642-evm.dtb:
> icssg@...80000: 'assigned-clock-parents', 'assigned-clocks', 'clocks' do
> not match any of the regexes: '^(pru|rtu|txpru)@[0-9a-f]+$',
> '^pa-stats@[a-f0-9]+$', 'cfg@[a-f0-9]+$', 'iep@[a-f0-9]+$',
> 'interrupt-controller@[a-f0-9]+$', 'mdio@[a-f0-9]+$',
> 'memories@[a-f0-9]+$', 'mii-g-rt@[a-f0-9]+$', 'mii-rt@[a-f0-9]+$',
> 'pinctrl-[0-9]+'
> 	from schema $id: http://devicetree.org/schemas/soc/ti/ti,pruss.yaml#
> /home/danish/workspace/linux-next/arch/arm64/boot/dts/ti/k3-am642-evm.dtb:
> icssg@...80000: 'assigned-clock-parents', 'assigned-clocks', 'clocks' do
> not match any of the regexes: '^(pru|rtu|txpru)@[0-9a-f]+$',
> '^pa-stats@[a-f0-9]+$', 'cfg@[a-f0-9]+$', 'iep@[a-f0-9]+$',

I don't understand these, either.  All of them have clocks. What are you
testing? You add clocks to DTS but not to the binding? What would be the
point of that test?

Best regards,
Krzysztof