From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-9.8 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS, URIBL_BLOCKED,USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 3275EC4332B for ; Sun, 22 Mar 2020 15:43:14 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 0E8722072E for ; Sun, 22 Mar 2020 15:43:14 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727011AbgCVPnN (ORCPT ); Sun, 22 Mar 2020 11:43:13 -0400 Received: from foss.arm.com ([217.140.110.172]:41070 "EHLO foss.arm.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1725970AbgCVPnN (ORCPT ); Sun, 22 Mar 2020 11:43:13 -0400 Received: from usa-sjc-imap-foss1.foss.arm.com (unknown [10.121.207.14]) by usa-sjc-mx-foss1.foss.arm.com (Postfix) with ESMTP id 4C1DBFEC; Sun, 22 Mar 2020 08:43:12 -0700 (PDT) Received: from ssg-dev-vb.arm.com (unknown [10.57.20.128]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPSA id EFDDE3F52E; Sun, 22 Mar 2020 08:43:06 -0700 (PDT) From: Hadar Gat To: Matt Mackall , Herbert Xu , Rob Herring , Mark Rutland , Arnd Bergmann , Greg Kroah-Hartman , Krzysztof Kozlowski , Florian Fainelli , Alexander Sverdlin , Thomas Gleixner , Tomer Maimon , Randy Dunlap , Zaibo Xu , Daniel Thompson , Mauro Carvalho Chehab , "David S. Miller" , Jonathan Cameron Cc: linux-crypto@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, Gilad Ben-Yossef , Ofir Drang , Hadar Gat Subject: [PATCH v5 1/3] dt-bindings: add device tree binding for Arm CryptoCell trng engine Date: Sun, 22 Mar 2020 17:31:23 +0200 Message-Id: <1584891085-8963-2-git-send-email-hadar.gat@arm.com> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1584891085-8963-1-git-send-email-hadar.gat@arm.com> References: <1584891085-8963-1-git-send-email-hadar.gat@arm.com> Sender: linux-crypto-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-crypto@vger.kernel.org The Arm CryptoCell is a hardware security engine. This patch adds DT bindings for its TRNG (True Random Number Generator) engine. Signed-off-by: Hadar Gat --- .../devicetree/bindings/rng/arm-cctrng.yaml | 55 ++++++++++++++++++++++ 1 file changed, 55 insertions(+) create mode 100644 Documentation/devicetree/bindings/rng/arm-cctrng.yaml diff --git a/Documentation/devicetree/bindings/rng/arm-cctrng.yaml b/Documentation/devicetree/bindings/rng/arm-cctrng.yaml new file mode 100644 index 0000000..7f70e4b --- /dev/null +++ b/Documentation/devicetree/bindings/rng/arm-cctrng.yaml @@ -0,0 +1,55 @@ +# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause) +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/rng/arm-cctrng.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: Arm TrustZone CryptoCell TRNG engine + +maintainers: + - Hadar Gat + +description: |+ + Arm TrustZone CryptoCell TRNG (True Random Number Generator) engine. + +properties: + compatible: + enum: + - arm,cryptocell-713-trng + - arm,cryptocell-703-trng + + interrupts: + maxItems: 1 + + reg: + maxItems: 1 + + arm,rosc-ratio: + description: + Arm TrustZone CryptoCell TRNG engine has 4 ring oscillators. + Sampling ratio values for these 4 ring oscillators. (from calibration) + allOf: + - $ref: /schemas/types.yaml#/definitions/uint32-array + - items: + minItems: 4 + maxItems: 4 + + clocks: + maxItems: 1 + +required: + - compatible + - interrupts + - reg + - arm,rosc-ratio + +additionalProperties: false + +examples: + - | + arm_cctrng: rng@60000000 { + compatible = "arm,cryptocell-713-trng"; + interrupts = <0 29 4>; + reg = <0x60000000 0x10000>; + arm,rosc-ratio = <5000 1000 500 0>; + }; -- 2.7.4