linux-kernel - Re: [PATCH v13 07/10] firmware: psci: Implement vendor-specific resets as reboot-mode

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Message-ID: <mfxfi3blmebuua4rwdppbaiyiyqh7apkh4xxlwqm6t2ishjqfa@i26nvsduy5wm>
Date: Mon, 28 Jul 2025 18:37:13 +0300
From: Dmitry Baryshkov <dmitry.baryshkov@....qualcomm.com>
To: Sudeep Holla <sudeep.holla@....com>
Cc: Krzysztof Kozlowski <krzk@...nel.org>,
        Shivendra Pratap <shivendra.pratap@....qualcomm.com>,
        Bartosz Golaszewski <bartosz.golaszewski@...aro.org>,
        Bjorn Andersson <andersson@...nel.org>,
        Sebastian Reichel <sre@...nel.org>, Rob Herring <robh@...nel.org>,
        Souvik Chakravarty <Souvik.Chakravarty@....com>,
        Krzysztof Kozlowski <krzk+dt@...nel.org>,
        Conor Dooley <conor+dt@...nel.org>, Andy Yan <andy.yan@...k-chips.com>,
        Mark Rutland <mark.rutland@....com>,
        Lorenzo Pieralisi <lpieralisi@...nel.org>,
        Arnd Bergmann <arnd@...db.de>, Konrad Dybcio <konradybcio@...nel.org>,
        cros-qcom-dts-watchers@...omium.org, Vinod Koul <vkoul@...nel.org>,
        Catalin Marinas <catalin.marinas@....com>,
        Will Deacon <will@...nel.org>,
        Florian Fainelli <florian.fainelli@...adcom.com>,
        Mukesh Ojha <mukesh.ojha@....qualcomm.com>,
        Stephen Boyd <swboyd@...omium.org>,
        Andre Draszik <andre.draszik@...aro.org>, linux-pm@...r.kernel.org,
        linux-kernel@...r.kernel.org, devicetree@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org, linux-arm-msm@...r.kernel.org,
        Elliot Berman <quic_eberman@...cinc.com>,
        Srinivas Kandagatla <srini@...nel.org>
Subject: Re: [PATCH v13 07/10] firmware: psci: Implement vendor-specific
 resets as reboot-mode

On Mon, Jul 28, 2025 at 02:23:17PM +0100, Sudeep Holla wrote:
> On Mon, Jul 28, 2025 at 02:23:14PM +0200, Krzysztof Kozlowski wrote:
> > On 28/07/2025 14:03, Dmitry Baryshkov wrote:
> > >>
> > >>> and the reboot-mode is defined in the
> > >>> previous patch. So, I'd assume, the path is defined.
> > >>
> > >> As I said, path is not. only psci/reboot-mode is.
> > > 
> > > Do we have an _actual_ use case where PSCI node is not at at root node? 
> > 
> > Yes, many cases, because it belongs as well to firmware node.
> > 
> 
> +1, I was about to make similar comment. /psci predates the formal push
> to put all firmware related nodes under /firmware, so /firmware/psci is
> equally possible path and should be recommended one so that all such
> firmware related nodes are contained under /firmware.

Ack, thanks for the explanation.

-- 
With best wishes
Dmitry