linux-kernel - Re: [PATCH RFC 2/5] dt-bindings: power: Add Marvell PXA1908 domains

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Message-ID: <5e79b123-b29a-4edb-8e70-3b7fa6cd3674@kernel.org>
Date: Fri, 15 Aug 2025 08:08:24 +0200
From: Krzysztof Kozlowski <krzk@...nel.org>
To: Duje Mihanović <duje@...emihanovic.xyz>
Cc: Michael Turquette <mturquette@...libre.com>,
 Stephen Boyd <sboyd@...nel.org>, Rob Herring <robh@...nel.org>,
 Krzysztof Kozlowski <krzk+dt@...nel.org>, Conor Dooley
 <conor+dt@...nel.org>, Ulf Hansson <ulf.hansson@...aro.org>,
 David Wronek <david@...nlining.org>, Karel Balej <balejk@...fyz.cz>,
 phone-devel@...r.kernel.org, ~postmarketos/upstreaming@...ts.sr.ht,
 linux-arm-kernel@...ts.infradead.org, linux-clk@...r.kernel.org,
 devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
 linux-pm@...r.kernel.org
Subject: Re: [PATCH RFC 2/5] dt-bindings: power: Add Marvell PXA1908 domains

On 15/08/2025 00:08, Duje Mihanović wrote:
> On Monday, 11 August 2025 08:38:15 Central European Summer Time 
> Krzysztof Kozlowski wrote:
>> On 08/08/2025 21:46, Duje Mihanović wrote:
>>> On Friday, 8 August 2025 09:34:54 Central European Summer Time Krzysztof 
>>> Kozlowski wrote:
>>>> On Wed, Aug 06, 2025 at 07:33:21PM +0200, Duje Mihanović wrote:
>>>>> +          A number of phandles to clocks that need to be enabled during
>>>>> domain +          power up.
>>>>
>>>> This does not exist in your example, so it is just confusing.
>>>
>>> This is because I have not implemented any of the clocks used by the
>>> domains at this moment.
>>>
>>> Actually, I am not sure anymore whether it is necessary to assign
>>> clocks to the domains as I have just yesterday successfully brought up
>>> the GPU with some out-of-tree code and that did not require giving the
>>> domains any clocks even though the vendor kernel does this. Should I
>>> just go with that and drop all clock handling from the power domain
>>> driver, at which point there would be no need for the individual domain
>>> nodes? If not, how should I in the future assign clocks to the domains?
>>
>> I am asking to see complete binding with complete DTS in example and
>> submitted to SoC maintainer.
> 
> Hm, so if in the example (and the actual DTS) each domain is assigned a clock, 
> can I then keep the domain and domain controller nodes like Mediatek and 
> Rockchip have?

You would need to point me to specific files or show some code.

> 
> Does SoC maintainer here mean the SoC mailing list or the maintainer of the 
> particular SoC family in question?

I meant rather post complete DTS to mailing lists (so maintainer of
given SoC family can see it as well), does not have to be the same patchset.



Best regards,
Krzysztof