linux-kernel - Re: [PATCH] dt-bindings: add device tree binding for Arm TrustZone CryptoCell crypto engine

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Message-ID: <20171116051239.mztfnfc23xtabcjr@rob-hp-laptop>
Date:   Wed, 15 Nov 2017 23:12:39 -0600
From:   Rob Herring <robh@...nel.org>
To:     Gilad Ben-Yossef <gilad@...yossef.com>
Cc:     Herbert Xu <herbert@...dor.apana.org.au>,
        "David S. Miller" <davem@...emloft.net>,
        Mark Rutland <mark.rutland@....com>,
        Ofir Drang <ofir.drang@....com>, devel@...verdev.osuosl.org,
        linux-crypto@...r.kernel.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH] dt-bindings: add device tree binding for Arm TrustZone
 CryptoCell crypto engine

On Wed, Nov 15, 2017 at 01:05:17PM +0000, Gilad Ben-Yossef wrote:
> The Arm TrustZone CryptoCell is a hardware security engine. This patch
> adds DT bindings for its Rich Execution Environment crypto engine.
> 
> A driver supporting this device is already present in the staging tree.
> 
> Signed-off-by: Gilad Ben-Yossef <gilad@...yossef.com>
> ---
>  .../devicetree/bindings/crypto/arm-cryptocell.txt  | 22 ++++++++++++++++++++++
>  1 file changed, 22 insertions(+)
>  create mode 100644 Documentation/devicetree/bindings/crypto/arm-cryptocell.txt
> 
> diff --git a/Documentation/devicetree/bindings/crypto/arm-cryptocell.txt b/Documentation/devicetree/bindings/crypto/arm-cryptocell.txt
> new file mode 100644
> index 0000000..ccf8a101
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/crypto/arm-cryptocell.txt
> @@ -0,0 +1,22 @@
> +Arm TrustZone CryptoCell cryptographic engine
> +
> +Required properties:
> +- compatible: Should be "arm,cryptocell-712-ree".
> +- reg: Base physical address of the engine and length of memory mapped region.
> +- interrupts: Interrupt number for the device.
> +
> +Optional properties:
> +- interrupt-parent: The phandle for the interrupt controller that services
> +  interrupts for this device.
> +- clocks: Reference to the crypto engine clock.
> +- dma-coherent: Present if dma operations are coherent.
> +
> +Examples:
> +
> +       arm_cc712: arm_cc712@...00000 {

crypto@...

With that,

Acked-by: Rob Herring <robh@...nel.org>


> +               compatible = "arm,cryptocell-712-ree";
> +               interrupt-parent = <&intc>;
> +               interrupts = < 0 30 4 >;
> +               reg = < 0x80000000 0x10000 >;
> +
> +       };
> -- 
> 2.7.4
>