Re: [PATCH v3 2/3] dt-bindings: crypto: document Exynos5433 SlimSSS
From: Rob Herring
Date: Wed Jan 30 2019 - 11:51:21 EST
On Thu, Jan 24, 2019 at 04:45:20PM +0100, Kamil Konieczny wrote:
> Document DT bindings for crypto Samsung Exynos5433 SlimSSS (Slim Security
> SubSystem) IP.
> Reviewed-by: Krzysztof Kozlowski <krzk@xxxxxxxxxx>
> Signed-off-by: Kamil Konieczny <k.konieczny@xxxxxxxxxxxxxxxxxxx>
> .../devicetree/bindings/crypto/samsung-sss.txt | 14 +++++++++++---
> 1 file changed, 11 insertions(+), 3 deletions(-)
> diff --git a/Documentation/devicetree/bindings/crypto/samsung-sss.txt b/Documentation/devicetree/bindings/crypto/samsung-sss.txt
> index 7a5ca56683cc..d9af679d38ab 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 +15,12 @@ supports the following also:
> -- True Random Number Generator (TRNG)
> -- Secure Key Manager
> +Exynos5433 has both SSS and SlimSSS module.
That's not really relevant to the binding.
What do the SSS and SlimSSS share? Only that both have a single reg and
interrupt based on the binding? This should probably be just 2
documents. If not now, it will have to be when converted to a DT schema.
> +SlimSSS in 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 +28,13 @@ 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 Exynos5433 SoCs.
> - 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.