linux-kernel - Re: [RFC PATCH 1/3] dt-bindings: Add ARM PSA FF binding for non-secure VM partitions

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Date:   Wed, 10 Jun 2020 09:32:37 +0100
From:   Sudeep Holla <sudeep.holla@....com>
To:     Rob Herring <robh@...nel.org>
Cc:     Will Deacon <will@...nel.org>, devicetree@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
        Marc Zyngier <maz@...nel.org>,
        Sudeep Holla <sudeep.holla@....com>
Subject: Re: [RFC PATCH 1/3] dt-bindings: Add ARM PSA FF binding for
 non-secure VM partitions

On Tue, Jun 09, 2020 at 04:35:51PM -0600, Rob Herring wrote:
> On Mon, Jun 01, 2020 at 10:45:10AM +0100, Sudeep Holla wrote:
> > Add devicetree bindings for a Arm PSA FF-A compliant non-secure partition
> > at virtual interface(VMs).
> >
> > Signed-off-by: Sudeep Holla <sudeep.holla@....com>
> > ---
> >  .../devicetree/bindings/arm/arm,psa-ffa.txt   | 47 +++++++++++++++++++
> >  1 file changed, 47 insertions(+)
> >  create mode 100644 Documentation/devicetree/bindings/arm/arm,psa-ffa.txt
>
> I'm hoping this goes away if the firmware is discoverable, but if not DT
> bindings are DT schema now.
>

Yes, consider it gone. I introduced it to couple of reasons both of which
are now irrelevant. We may revisit this if we need it for Rx/Tx buffer
information. The KVM host may need the binding, this was for the guests/
partitions as Will has already mentioned.

--
Regards,
Sudeep