From patchwork Mon Jan 27 09:28:22 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Hadar Gat X-Patchwork-Id: 1229638 Return-Path: X-Original-To: incoming-dt@patchwork.ozlabs.org Delivered-To: patchwork-incoming-dt@bilbo.ozlabs.org Authentication-Results: ozlabs.org; spf=none (no SPF record) smtp.mailfrom=vger.kernel.org (client-ip=209.132.180.67; helo=vger.kernel.org; envelope-from=devicetree-owner@vger.kernel.org; receiver=) Authentication-Results: ozlabs.org; dmarc=none (p=none dis=none) header.from=arm.com Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by ozlabs.org (Postfix) with ESMTP id 485kxR1hqXz9sRs for ; Mon, 27 Jan 2020 20:30:19 +1100 (AEDT) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1729644AbgA0JaS (ORCPT ); Mon, 27 Jan 2020 04:30:18 -0500 Received: from foss.arm.com ([217.140.110.172]:41504 "EHLO foss.arm.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1729568AbgA0JaS (ORCPT ); Mon, 27 Jan 2020 04:30:18 -0500 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 20EF3101E; Mon, 27 Jan 2020 01:30:18 -0800 (PST) Received: from ssg-dev-vb.kfn.arm.com (E111385.Arm.com [10.50.4.77]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPSA id 2BF4F3F67D; Mon, 27 Jan 2020 01:30:14 -0800 (PST) From: Hadar Gat To: Matt Mackall , Herbert Xu , Rob Herring , Mark Rutland , Arnd Bergmann , Greg Kroah-Hartman , Krzysztof Kozlowski , Daniel Thompson , Tomer Maimon , Stefan Wahren , Sumit Garg , Zaibo Xu , Weili Qian , 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 1/3] dt-bindings: add device tree binding for Arm CryptoCell trng engine Date: Mon, 27 Jan 2020 11:28:22 +0200 Message-Id: <1580117304-12682-2-git-send-email-hadar.gat@arm.com> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1580117304-12682-1-git-send-email-hadar.gat@arm.com> References: <1580117304-12682-1-git-send-email-hadar.gat@arm.com> Sender: devicetree-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: devicetree@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 | 49 ++++++++++++++++++++++ 1 file changed, 49 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..d68693f --- /dev/null +++ b/Documentation/devicetree/bindings/rng/arm-cctrng.yaml @@ -0,0 +1,49 @@ +# SPDX-License-Identifier: GPL-2.0 +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/crypto/arm-cctrng.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: Arm ZrustZone CryptoCell TRNG engine + +maintainers: + - Hadar Gat + +description: |+ + Arm ZrustZone CryptoCell TRNG (True Random Number Generator) engine. + +properties: + compatible: + description: Should be "arm,cryptocell-7x3-trng" + + interrupts: + description: Interrupt number for the device. + maxItems: 1 + + reg: + description: Base physical address of the engine and length of memory + mapped region. + maxItems: 1 + + rosc-ratio: + description: Sampling ratio values from calibration for 4 ring oscillators. + maxItems: 1 + + clocks: + description: Reference to the crypto engine clock. + +required: + - compatible + - interrupts + - reg + - rosc-ratio + +examples: + arm_cctrng: arm_cctrng@60000000 { + compatible = "arm,cryptocell-7x3-trng"; + interrupts = <0 29 4>; + reg = <0x60000000 0x10000>; + rosc-ratio = <5000 1000 500 0>; + }; + +additionalProperties: false