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

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Message-ID: <62f3902e-8ee4-4cdb-864c-cfe57c7e3839@ti.com>
Date: Fri, 8 Nov 2024 18:04:24 +0530
From: "Anwar, Md Danish" <a0501179@...com>
To: Krzysztof Kozlowski <krzk@...nel.org>
CC: 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>,
        <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 11/8/2024 6:00 PM, Krzysztof Kozlowski wrote:
> On Fri, Nov 08, 2024 at 05:49:54PM +0530, Anwar, Md Danish wrote:
>> Hi Krzysztof,
>>
>> On 11/7/2024 5:51 PM, Krzysztof Kozlowski wrote:
>>> 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.
>>>>>>
>>
>> The purpose of this series is to add 'assigned-clock-parents',
>> 'assigned-clocks' to the DT node. Initially I was only trying to add
>> these two nodes to DT and at that time I got the above error. I also got
>>  the below error as well
> 
> So you pasted different error, not related to topic we discussed.
> assigned-clock* depend on clocks. You must have clocks to assign them,
> obviously. Device should no assign rates to clocks which are not its
> inputs. :/
> 
> 
>>
>> /home/danish/workspace/linux-next/arch/arm64/boot/dts/ti/k3-am642-evm.dtb:
>> icssg@...00000: 'anyOf' conditional failed, one must be fixed:
>>         'clocks' is a required property
>>         '#clock-cells' is a required property
>>         from schema $id: http://devicetree.org/schemas/clock/clock.yaml#
>>
>>
>> To fix this I added 'assigned-clock-parents', 'assigned-clocks' to the
>> binding and at this time I got only the below error,
> 
> To fix this you must add clocks. The error tells you this.
> 
> So again: drop assigned properties. No error msg asked you to add them.
> 

Yes, I will drop assigned properties from binding and post a v2.

> Best regards,
> Krzysztof
> 

-- 
Thanks and Regards,
Md Danish Anwar