Received-SPF: pass (google.com: best guess record for domain of linux-crypto-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) client-ip=209.132.180.67;
Date:   Tue, 19 Nov 2019 08:39:24 +0100
From:   Corentin Labbe <clabbe.montjoie@gmail.com>
To:     Maxime Ripard <mripard@kernel.org>
Cc:     davem@davemloft.net, herbert@gondor.apana.org.au,
        mark.rutland@arm.com, robh+dt@kernel.org, wens@csie.org,
        devicetree@vger.kernel.org, linux-arm-kernel@lists.infradead.org,
        linux-crypto@vger.kernel.org, linux-kernel@vger.kernel.org,
        linux-sunxi@googlegroups.com
Subject: Re: [PATCH 2/3] ARM: dts: sun8i: a33: add the new SecuritySystem
 compatible
Message-ID: <20191119073924.GA32060@Red>
References: <20191114144812.22747-1-clabbe.montjoie@gmail.com>
 <20191114144812.22747-3-clabbe.montjoie@gmail.com>
 <20191118111143.GF4345@gilmour.lan>
MIME-Version: 1.0
Content-Type: text/plain; charset=us-ascii
Content-Disposition: inline
In-Reply-To: <20191118111143.GF4345@gilmour.lan>
User-Agent: Mutt/1.10.1 (2018-07-13)
Sender: linux-crypto-owner@vger.kernel.org
Precedence: bulk

On Mon, Nov 18, 2019 at 12:11:43PM +0100, Maxime Ripard wrote:
> Hi,
> 
> On Thu, Nov 14, 2019 at 03:48:11PM +0100, Corentin Labbe wrote:
> > Add the new A33 SecuritySystem compatible to the crypto node.
> >
> > Signed-off-by: Corentin Labbe <clabbe.montjoie@gmail.com>
> > ---
> >  arch/arm/boot/dts/sun8i-a33.dtsi | 3 ++-
> >  1 file changed, 2 insertions(+), 1 deletion(-)
> >
> > diff --git a/arch/arm/boot/dts/sun8i-a33.dtsi b/arch/arm/boot/dts/sun8i-a33.dtsi
> > index 1532a0e59af4..5680fa1de102 100644
> > --- a/arch/arm/boot/dts/sun8i-a33.dtsi
> > +++ b/arch/arm/boot/dts/sun8i-a33.dtsi
> > @@ -215,7 +215,8 @@
> >  		};
> >
> >  		crypto: crypto-engine@1c15000 {
> > -			compatible = "allwinner,sun4i-a10-crypto";
> > +			compatible = "allwinner,sun8i-a33-crypto",
> > +				     "allwinner,sun4i-a10-crypto";
> 
> If some algorithms aren't working properly, we can't really fall back
> to it, we should just use the a33 compatible.
> 

Since crypto selftest detect the problem, the fallback could be used and SS will just be in degraded mode (no sha1).
But since nobody reported this problem since 4 years (when SS was added in a33 dts), the absence of sha1 is clearly not an issue.

Regards