linux-kernel - Re: [PATCH] dt-bindings: phy: samsung,ufs-phy: add power-domains

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Message-ID: <e91f6754bf13f1d42402fb708dfc2b3d7bd59a6b.camel@linaro.org>
Date: Wed, 08 Oct 2025 09:07:12 +0100
From: André Draszik <andre.draszik@...aro.org>
To: Alim Akhtar <alim.akhtar@...sung.com>, 'Vinod Koul' <vkoul@...nel.org>, 
 'Kishon Vijay Abraham I'	 <kishon@...nel.org>, 'Rob Herring'
 <robh@...nel.org>, 'Krzysztof Kozlowski'	 <krzk+dt@...nel.org>, 'Conor
 Dooley' <conor+dt@...nel.org>
Cc: 'Peter Griffin' <peter.griffin@...aro.org>, 'Tudor Ambarus'
	 <tudor.ambarus@...aro.org>, 'Will McVicker' <willmcvicker@...gle.com>, 
	kernel-team@...roid.com, linux-phy@...ts.infradead.org, 
	devicetree@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] dt-bindings: phy: samsung,ufs-phy: add power-domains

Hi Alim,

On Wed, 2025-10-08 at 11:56 +0530, Alim Akhtar wrote:
> 
> 
> > -----Original Message-----
> > From: André Draszik <andre.draszik@...aro.org>
> > Sent: Tuesday, October 7, 2025 9:32 PM
> > To: Vinod Koul <vkoul@...nel.org>; Kishon Vijay Abraham I
> > <kishon@...nel.org>; Rob Herring <robh@...nel.org>; Krzysztof Kozlowski
> > <krzk+dt@...nel.org>; Conor Dooley <conor+dt@...nel.org>; Alim Akhtar
> > <alim.akhtar@...sung.com>
> > Cc: Peter Griffin <peter.griffin@...aro.org>; Tudor Ambarus
> > <tudor.ambarus@...aro.org>; Will McVicker <willmcvicker@...gle.com>;
> > kernel-team@...roid.com; linux-phy@...ts.infradead.org;
> > devicetree@...r.kernel.org; linux-kernel@...r.kernel.org; André Draszik
> > <andre.draszik@...aro.org>
> > Subject: [PATCH] dt-bindings: phy: samsung,ufs-phy: add power-domains
> > 
> > The UFS phy can be part of a power domain, so we need to allow the
> > relevant property 'power-domains'.
> > 
> Can you cross check if there is a separate power domain control for ufs-phy? 

I'm still having some other troubles with the hsi2 (UFS) power domain on gs101,
but I can confirm the usb-phy is part of the hsi0 (USB) power domain. So for the
ufs-phy I presume it's similar: it should be part of the hsi2 power domain. There
certainly is no separate domain for the ufs-phy itself.

See also my reply to the other patch:
https://lore.kernel.org/all/ff3a0b96980669f326ed02ed81b97d34c104b09d.camel@linaro.org/

Does that answer your question?

Cheers,
Andre'