linux-kernel - Re: [PATCH] dt-bindings: PCI: qcom: Allow 'vddpe-3v3-supply' again

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <y6ctin3zp55gzbvzamj2dxm4rdk2h5odmyprlnt4m4j44pnkvu@bfhmhu6djvz2>
Date: Thu, 25 Jul 2024 11:57:39 +0300
From: Dmitry Baryshkov <dmitry.baryshkov@...aro.org>
To: Johan Hovold <johan@...nel.org>
Cc: Johan Hovold <johan+linaro@...nel.org>, 
	Bjorn Helgaas <bhelgaas@...gle.com>, Lorenzo Pieralisi <lpieralisi@...nel.org>, 
	Krzysztof Wilczyński <kw@...ux.com>, Rob Herring <robh@...nel.org>, 
	Krzysztof Kozlowski <krzk+dt@...nel.org>, Conor Dooley <conor+dt@...nel.org>, 
	Bjorn Andersson <andersson@...nel.org>, Manivannan Sadhasivam <manivannan.sadhasivam@...aro.org>, 
	Abel Vesa <abel.vesa@...aro.org>, linux-arm-msm@...r.kernel.org, linux-pci@...r.kernel.org, 
	devicetree@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] dt-bindings: PCI: qcom: Allow 'vddpe-3v3-supply' again

On Thu, Jul 25, 2024 at 10:13:07AM GMT, Johan Hovold wrote:
> On Thu, Jul 25, 2024 at 10:49:41AM +0300, Dmitry Baryshkov wrote:
> > On Thu, 25 Jul 2024 at 09:17, Johan Hovold <johan@...nel.org> wrote:
> > > On Wed, Jul 24, 2024 at 08:22:54PM +0300, Dmitry Baryshkov wrote:
> > > > On Tue, Jul 23, 2024 at 05:13:28PM GMT, Johan Hovold wrote:
> 
> > > > > Note that this property has been part of the Qualcomm PCIe bindings
> > > > > since 2018 and would need to be deprecated rather than simply removed if
> > > > > there is a desire to replace it with 'vpcie3v3' which is used for some
> > > > > non-Qualcomm controllers.
> > > >
> > > > I think Rob Herring suggested [1] adding the property to the root port
> > > > node rather than the host. If that suggestion still applies it might be
> > > > better to enable the deprecated propertly only for the hosts, which
> > > > already used it, and to define a new property at the root port.
> > >
> > > You seem to miss the point that this is just restoring status quo (and
> > > that the property has not yet been deprecated).
> > 
> > You are restoring it for all platforms.
> 
> It is already part of the bindings for all platforms.

It is not, it is enabled only for sc7280 and sc8280xp. It has been,
before the mentioned patch. I propopse to enable the property for the
platforms which are using it now (that is +x1e80100, msm8996 and
sdm845), clearly document it as deprecated and start shifting to the
pwrseq and having the power supplies being a part of the root port or
wcn device, depending on the use case.

-- 
With best wishes
Dmitry