linux-kernel - Re: [RESEND v2 1/6] dt-bindings: power: Add JH7110 AON PMU support

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Date:   Thu, 4 May 2023 17:48:20 +0800
From:   Changhuang Liang <changhuang.liang@...rfivetech.com>
To:     Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>,
        Conor Dooley <conor@...nel.org>
CC:     Conor Dooley <conor.dooley@...rochip.com>,
        Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        Emil Renner Berthing <kernel@...il.dk>,
        Paul Walmsley <paul.walmsley@...ive.com>,
        Palmer Dabbelt <palmer@...belt.com>,
        Albert Ou <aou@...s.berkeley.edu>,
        Walker Chen <walker.chen@...rfivetech.com>,
        Hal Feng <hal.feng@...rfivetech.com>,
        <devicetree@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
        <linux-riscv@...ts.infradead.org>, <vkoul@...nel.org>,
        <linux-phy@...ts.infradead.org>
Subject: Re: [RESEND v2 1/6] dt-bindings: power: Add JH7110 AON PMU support



On 2023/5/4 17:36, Krzysztof Kozlowski wrote:
> On 04/05/2023 10:43, Changhuang Liang wrote:
>>
>>
>> On 2023/5/4 15:26, Krzysztof Kozlowski wrote:
>>> On 04/05/2023 09:20, Changhuang Liang wrote:
>>>>>>
>>>>>> Krzysztof,
>>>>>>
>>>>>> I am confused about what to do next. How to add this power-controller's
>>>>>> node in device tree?
>>>>>>
>>>>>
>>>>> You just move power-domain-cells up.
>>>>>
>>>>> Best regards,
>>>>> Krzysztof
>>>>>
>>>>
>>>> Like this? 
>>>>
>>>> aon_syscon: syscon@...10000 {
>>>> 	compatible = "starfive,jh7110-aon-syscon", "syscon", "starfive,jh7110-aon-pmu";
>>>> 	reg = <0x0 0x17010000 0x0 0x1000>;
>>>> 	#power-domain-cells = <1>;
>>>> };
>>>>
>>>> If right? I will tell the syscon patch's owner delete the "simple-mfd" in aon_syscon node.
>>>
>>> Yes, but your compatibles are now wrong. Just compatible =
>>> "starfive,jh7110-aon-syscon", "syscon".
>>>
>>
>> If compatible = "starfive,jh7110-aon-syscon", "syscon". My pmu drivers need use 
>> "starfive,jh7110-aon-syscon" to match.
> 
> And how it would even work with your proposal
> "starfive,jh7110-aon-syscon", "syscon", "starfive,jh7110-aon-pmu"?
> 
> Try...
> 
>>  And my pmu series will add this 
>> aon_syscon in yaml and device tree, so the syscon patch's owner don't need 
>> to add the aon_syscon in its yaml and device tree?
> 
> I don't understand. But if you need to drop syscon, sure, drop it.
> 

Yes, I think it can drop aon_syscon node in syscon patch series. And maybe my
compatible = "starfive,jh7110-aon-pmu", "syscon"; is better.

aon_syscon: syscon@...10000 {
	compatible = "starfive,jh7110-aon-pmu", "syscon";
	reg = <0x0 0x17010000 0x0 0x1000>;
	#power-domain-cells = <1>;
};

Best regards,
Krzysztof