On Tue, 22 Jan 2019 at 16:26, Kamil Konieczny <k.konieczny@xxxxxxxxxxxxxxxxxxx> wrote: > > Document DT bindings for crypto Samsung Exynos5433 SlimSSS (Slim Security > SubSystem) IP. > > Signed-off-by: Kamil Konieczny <k.konieczny@xxxxxxxxxxxxxxxxxxx> > --- > .../devicetree/bindings/crypto/samsung-sss.txt | 13 ++++++++++--- > 1 file changed, 10 insertions(+), 3 deletions(-) > > diff --git a/Documentation/devicetree/bindings/crypto/samsung-sss.txt b/Documentation/devicetree/bindings/crypto/samsung-sss.txt > index 7a5ca56683cc..75718f86fe50 100644 > --- a/Documentation/devicetree/bindings/crypto/samsung-sss.txt > +++ b/Documentation/devicetree/bindings/crypto/samsung-sss.txt > @@ -1,4 +1,4 @@ > -Samsung SoC SSS (Security SubSystem) module > +Samsung SoC SSS (Security SubSystem) and SlimSSS module > > The SSS module in S5PV210 SoC supports the following: > -- Feeder (FeedCtrl) > @@ -15,6 +15,11 @@ supports the following also: > -- True Random Number Generator (TRNG) > -- Secure Key Manager > > +The SlimSSS module in Exynos5 (Exynos5433) supports: > +-- Feeder (FeedCtrl) > +-- Advanced Encryption Standard (AES) > +-- SHA-1/SHA-256/HMAC (SHA-1/SHA-256) > + > Required properties: > > - compatible : Should contain entries for this and backward compatible > @@ -22,11 +27,13 @@ Required properties: > - "samsung,s5pv210-secss" for S5PV210 SoC. > - "samsung,exynos4210-secss" for Exynos4210, Exynos4212, Exynos4412, Exynos5250, > Exynos5260 and Exynos5420 SoCs. > + - "samsung,exynos5433-slim-sss" for Exynos542x and Exynos5433 SoCs. For Exynos5420 there is a driver for regular/full SSS module. It would be nice to explain what is the difference between them and/or mention potential conflicts of usage. The point is that previously we added drivers/bindings for SSS and now you use the other interface. It might be pretty confusing for users... Best regards, Krzysztof > - reg : Offset and length of the register set for the module > - interrupts : interrupt specifiers of SSS module interrupts (one feed > control interrupt). > > - clocks : list of clock phandle and specifier pairs for all clocks listed in > clock-names property. > -- clock-names : list of device clock input names; should contain one entry > - "secss". > +- clock-names : list of device clock input names; should contain "pclk" and > + "aclk" for slim-sss in Exynos5433, and one entry "secss" for > + other compatibles. > -- > 2.20.0 >
