linux-kernel - Re: [PATCH v2 1/2] dt-bindings: rng: Add new compatible qcom,prng-v2

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Message-ID: <20180626152743.GD22377@vkoul-mobl>
Date:   Tue, 26 Jun 2018 20:57:43 +0530
From:   Vinod <vkoul@...nel.org>
To:     Rob Herring <robh@...nel.org>
Cc:     linux-crypto@...r.kernel.org, linux-kernel@...r.kernel.org,
        Matt Mackall <mpm@...enic.com>,
        Herbert Xu <herbert@...dor.apana.org.au>,
        Arnd Bergmann <arnd@...db.de>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        linux-arm-msm@...r.kernel.org, Stephen Boyd <swboyd@...omium.org>,
        devicetree@...r.kernel.org
Subject: Re: [PATCH v2 1/2] dt-bindings: rng: Add new compatible qcom,prng-v2

On 25-06-18, 13:06, Rob Herring wrote:
> On Tue, Jun 19, 2018 at 03:24:29PM +0530, Vinod Koul wrote:
> > Later qcom chips support v2 of the prng, so add new compatible
> > qcom,prng-v2 for this.
> > 
> > Signed-off-by: Vinod Koul <vkoul@...nel.org>
> > ---
> > 
> > Cc: Rob Herring <robh+dt@...nel.org>
> > Cc: devicetree@...r.kernel.org
> >  Documentation/devicetree/bindings/rng/qcom,prng.txt | 3 ++-
> >  1 file changed, 2 insertions(+), 1 deletion(-)
> > 
> > diff --git a/Documentation/devicetree/bindings/rng/qcom,prng.txt b/Documentation/devicetree/bindings/rng/qcom,prng.txt
> > index 8e5853c2879b..03fd218bd21a 100644
> > --- a/Documentation/devicetree/bindings/rng/qcom,prng.txt
> > +++ b/Documentation/devicetree/bindings/rng/qcom,prng.txt
> > @@ -2,7 +2,8 @@ Qualcomm MSM pseudo random number generator.
> >  
> >  Required properties:
> >  
> > -- compatible  : should be "qcom,prng"
> > +- compatible  : should be "qcom,prng" for 8916 etc
> > +              : should be "qcom,prng-v2" for 8996 and later
> 
> Either use SoC specific compatibles or convince me 'v2' is a meaningful 
> and specific enough version. Some other QC IP has x.y.z versioning for 
> example.

The specs says QC RNG V2 :)

Said that Stephen suggested to make it qcom,prng-ee to point out that we
are pointing to an execution environment in the IP, so will do that
instead unless you have better idea

-- 
~Vinod