linux-kernel - Re: [PATCH v4 5/7] dt-bindings: soc: starfive: Add StarFive syscon module

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Message-ID: <17bbb2fd-5df5-0f66-9a28-385c50b0d82d@linaro.org>
Date:   Fri, 12 May 2023 09:34:13 +0200
From:   Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
To:     Xingyu Wu <xingyu.wu@...rfivetech.com>,
        Conor Dooley <conor.dooley@...rochip.com>
Cc:     linux-riscv@...ts.infradead.org, devicetree@...r.kernel.org,
        Michael Turquette <mturquette@...libre.com>,
        Stephen Boyd <sboyd@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        Philipp Zabel <p.zabel@...gutronix.de>,
        Conor Dooley <conor@...nel.org>,
        Emil Renner Berthing <kernel@...il.dk>,
        Rob Herring <robh+dt@...nel.org>,
        Paul Walmsley <paul.walmsley@...ive.com>,
        Palmer Dabbelt <palmer@...belt.com>,
        Albert Ou <aou@...s.berkeley.edu>,
        Hal Feng <hal.feng@...rfivetech.com>,
        William Qiu <william.qiu@...rfivetech.com>,
        linux-kernel@...r.kernel.org, linux-clk@...r.kernel.org
Subject: Re: [PATCH v4 5/7] dt-bindings: soc: starfive: Add StarFive syscon
 module

On 12/05/2023 09:24, Xingyu Wu wrote:
> On 2023/5/12 14:50, Krzysztof Kozlowski wrote:
>> On 12/05/2023 08:43, Conor Dooley wrote:
>>> On Fri, May 12, 2023 at 08:35:43AM +0200, Krzysztof Kozlowski wrote:
>>>> On 12/05/2023 04:20, Xingyu Wu wrote:
>>>>> From: William Qiu <william.qiu@...rfivetech.com>
>>>
>>>>> +  "#power-domain-cells":
>>>>> +    const: 1
>>>>
>>>> Add it to the existing examples.
>>>>
>>>> This part confuses me... why aon appeared here?  Why power-controller
>>>> disappeared? I don't think that Rob or me proposed any of this.
>>>
>>> Rob did actually suggest this, as the power-controller child node had no
>>> properties other than #power-domain-cells.
>>
>> He suggested it for aon, but not for stg or sys... aon is not a child of
>> sys, is it? Then why power-controller disappeared from sys?
>>
> 
> The power-controller is only for aon, but now just use power-domain-cells instead.
> The sys only have the clock-controller child node not power-controller.
> And stg has neither.

OK, I see. Stuffing all of them in one binding suggests that anything
can be anything, but you actually have different devices with different
features/roles.

Best regards,
Krzysztof