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

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Message-ID: <1950265.tdWV9SEqCh@radijator>
Date: Fri, 15 Aug 2025 00:08:28 +0200
From: Duje Mihanović <duje@...emihanovic.xyz>
To: Krzysztof Kozlowski <krzk@...nel.org>
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 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?

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

Regards,
--
Duje