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Tue, 02 Jun 2020 00:15:02 -0800 Received: from MTKMBS01N1.mediatek.inc (172.21.101.68) by MTKMBS62N2.mediatek.inc (172.29.193.42) with Microsoft SMTP Server (TLS) id 15.0.1497.2; Tue, 2 Jun 2020 01:15:00 -0700 Received: from mtkcas08.mediatek.inc (172.21.101.126) by mtkmbs01n1.mediatek.inc (172.21.101.68) with Microsoft SMTP Server (TLS) id 15.0.1497.2; Tue, 2 Jun 2020 16:14:59 +0800 Received: from mtkswgap22.mediatek.inc (172.21.77.33) by mtkcas08.mediatek.inc (172.21.101.73) with Microsoft SMTP Server id 15.0.1497.2 via Frontend Transport; Tue, 2 Jun 2020 16:14:58 +0800 From: Neal Liu To: Matt Mackall , Herbert Xu , Rob Herring , Matthias Brugger , Sean Wang , Arnd Bergmann , "Greg Kroah-Hartman" Subject: [PATCH v6 1/2] dt-bindings: rng: add bindings for sec-rng Date: Tue, 2 Jun 2020 16:14:37 +0800 Message-ID: <1591085678-22764-2-git-send-email-neal.liu@mediatek.com> X-Mailer: git-send-email 1.7.9.5 In-Reply-To: <1591085678-22764-1-git-send-email-neal.liu@mediatek.com> References: <1591085678-22764-1-git-send-email-neal.liu@mediatek.com> MIME-Version: 1.0 X-MTK: N X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20200602_011508_845320_5C93CD05 X-CRM114-Status: GOOD ( 10.70 ) X-Spam-Score: -0.2 (/) X-Spam-Report: SpamAssassin version 3.4.4 on bombadil.infradead.org summary: Content analysis details: (-0.2 points) pts rule name description ---- ---------------------- -------------------------------------------------- -0.0 SPF_PASS SPF: sender matches SPF record 0.0 SPF_HELO_NONE SPF: HELO does not publish an SPF Record 0.0 MIME_BASE64_TEXT RAW: Message text disguised using base64 encoding -0.1 DKIM_VALID Message has at least one valid DKIM or DK signature 0.1 DKIM_SIGNED Message has a DKIM or DK signature, not necessarily valid -0.1 DKIM_VALID_AU Message has a valid DKIM or DK signature from author's domain -0.1 DKIM_VALID_EF Message has a valid DKIM or DK signature from envelope-from domain 0.0 UNPARSEABLE_RELAY Informational: message has unparseable relay lines X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: devicetree@vger.kernel.org, wsd_upstream@mediatek.com, lkml , Crystal Guo , linux-mediatek@lists.infradead.org, linux-crypto@vger.kernel.org, Neal Liu , linux-arm-kernel@lists.infradead.org Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org Add bindings for ARM TrustZone based Security Random Number Generator. Signed-off-by: Neal Liu --- Documentation/devicetree/bindings/rng/sec-rng.yaml | 53 ++++++++++++++++++++ 1 file changed, 53 insertions(+) create mode 100644 Documentation/devicetree/bindings/rng/sec-rng.yaml diff --git a/Documentation/devicetree/bindings/rng/sec-rng.yaml b/Documentation/devicetree/bindings/rng/sec-rng.yaml new file mode 100644 index 0000000..7f4ae50 --- /dev/null +++ b/Documentation/devicetree/bindings/rng/sec-rng.yaml @@ -0,0 +1,53 @@ +# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause) +# # Copyright 2020 MediaTek Inc. +%YAML 1.2 +--- +$id: "http://devicetree.org/schemas/rng/sec-rng.yaml#" +$schema: "http://devicetree.org/meta-schemas/core.yaml#" + +title: Security Random Number Generator + +description: | + sec-rng is a security random number generator which provides a generic + interface to get hardware rnd from Secure state. The Secure state can be + Arm Trusted Firmware(ATF), Trusted Execution Environment(TEE), or even + EL2 hypervisor. + +maintainer: + - Neal Liu + +properties: + compatible: + enum: + - arm,sec-rng + + method: + description: The method of calling to Secure state + enum: + - smc + - hvc + + method-fid: + description: The function number within the SMC and HVC function identifier + maxItems: 1 + + quality: + description: Estimation of true entropy in RNG's bitstream per 1024 bits + maxItems: 1 + +required: + - compatible + - methods + - method-fid + - quality + +additionalProperties: false + +examples: + - | + hwrng: hwrng { + compatible = "arm,sec-rng"; + method = "smc"; + method-fid = /bits/ 16 <0x26a>; + quality = /bits/ 16 <900>; + };