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

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Message-ID: <20200610074346.GB15939@willie-the-truck>
Date:   Wed, 10 Jun 2020 08:43:47 +0100
From:   Will Deacon <will@...nel.org>
To:     Rob Herring <robh@...nel.org>
Cc:     Sudeep Holla <sudeep.holla@....com>, devicetree@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
        Marc Zyngier <maz@...nel.org>
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.

We'll need the binding for the kvm host side, because there are plenty
of partition properties that are not discoverable (e.g. number of vCPUs).

I'll have a go a yamlifying what I have...

Will