From patchwork Fri Aug 11 10:07:24 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Gatien CHEVALLIER X-Patchwork-Id: 713145 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id F2483C05052 for ; Fri, 11 Aug 2023 10:11:19 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S235808AbjHKKLS (ORCPT ); Fri, 11 Aug 2023 06:11:18 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:35014 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231364AbjHKKKg (ORCPT ); Fri, 11 Aug 2023 06:10:36 -0400 Received: from mx07-00178001.pphosted.com (mx07-00178001.pphosted.com [185.132.182.106]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 6CF6C3AAA; Fri, 11 Aug 2023 03:09:55 -0700 (PDT) Received: from pps.filterd (m0241204.ppops.net [127.0.0.1]) by mx07-00178001.pphosted.com (8.17.1.22/8.17.1.22) with ESMTP id 37B73oSB008122; Fri, 11 Aug 2023 12:08:55 +0200 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=foss.st.com; h= from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding:content-type; s= selector1; bh=ovit7dM+DyWt/6Patj4mHOnfPKNp+g/2O5XpZ5R9Woo=; b=zm ZpALRvRKgxj9ubGeFBJutpwSN2NW8oUegfTcGkxJR7fhSVZbcmLl1xVwS5ETXO7b tTMJLm4UW98708V4mo82dMnzk+nbZKQzUg9t0aO95/8yR4XT3bTBfh3hHXw0ZRQm +ubdpDZO1YVCZf+aVC6Qk89Btdij1djuBoH7ckJNUETQvNrgk3Yjeqtyz0DZhO7w 1PZ/DaUL1wE5sMwFhru6Iv2uXcXYBud/LIpEdAz6H+CzcVnPnf7Q3J/jNHW3lGZT 8mRjdNywcaeQ6sBQuQwBelz/ycJA0SIimihyxCvxHAyKVj0Rbsblwl/hFLWMSLG0 TCJxtEO3WfFciwkap1wQ== Received: from beta.dmz-eu.st.com (beta.dmz-eu.st.com [164.129.1.35]) by mx07-00178001.pphosted.com (PPS) with ESMTPS id 3sd9jrtysc-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Fri, 11 Aug 2023 12:08:55 +0200 (MEST) Received: from euls16034.sgp.st.com (euls16034.sgp.st.com [10.75.44.20]) by beta.dmz-eu.st.com (STMicroelectronics) with ESMTP id 3CC4710004F; Fri, 11 Aug 2023 12:08:54 +0200 (CEST) Received: from Webmail-eu.st.com (eqndag1node4.st.com [10.75.129.133]) by euls16034.sgp.st.com (STMicroelectronics) with ESMTP id 31709214D21; Fri, 11 Aug 2023 12:08:54 +0200 (CEST) Received: from localhost (10.201.21.121) by EQNDAG1NODE4.st.com (10.75.129.133) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.2507.21; Fri, 11 Aug 2023 12:08:53 +0200 From: Gatien Chevallier To: , , , , , , , , , , , , , , , , , , , , , , , , , Frank Rowand , CC: , , , , , , , , , , , , , , , , Gatien Chevallier Subject: [PATCH v4 04/11] dt-bindings: bus: document ETZPC Date: Fri, 11 Aug 2023 12:07:24 +0200 Message-ID: <20230811100731.108145-5-gatien.chevallier@foss.st.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20230811100731.108145-1-gatien.chevallier@foss.st.com> References: <20230811100731.108145-1-gatien.chevallier@foss.st.com> MIME-Version: 1.0 X-Originating-IP: [10.201.21.121] X-ClientProxiedBy: EQNCAS1NODE4.st.com (10.75.129.82) To EQNDAG1NODE4.st.com (10.75.129.133) X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.267,Aquarius:18.0.957,Hydra:6.0.591,FMLib:17.11.176.26 definitions=2023-08-10_20,2023-08-10_01,2023-05-22_02 Precedence: bulk List-ID: X-Mailing-List: linux-serial@vger.kernel.org Document ETZPC (Extended TrustZone protection controller). ETZPC is a firewall controller. Signed-off-by: Gatien Chevallier --- Changes in V2: - Corrected errors highlighted by Rob's robot - No longer define the maxItems for the "feature-domains" property - Fix example (node name, status) - Declare "feature-domain-names" as an optional property for child nodes - Fix description of "feature-domains" property - Reorder the properties so it matches RIFSC - Add missing "feature-domain-controller" property .../bindings/bus/st,stm32-etzpc.yaml | 96 +++++++++++++++++++ 1 file changed, 96 insertions(+) create mode 100644 Documentation/devicetree/bindings/bus/st,stm32-etzpc.yaml diff --git a/Documentation/devicetree/bindings/bus/st,stm32-etzpc.yaml b/Documentation/devicetree/bindings/bus/st,stm32-etzpc.yaml new file mode 100644 index 000000000000..ef5979c0d6f2 --- /dev/null +++ b/Documentation/devicetree/bindings/bus/st,stm32-etzpc.yaml @@ -0,0 +1,96 @@ +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/bus/st,stm32-etzpc.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: STM32 Extended TrustZone protection controller + +description: | + The ETZPC configures TrustZone security in a SoC having bus masters and + devices with programmable-security attributes (securable resources). + +maintainers: + - Gatien Chevallier + +properties: + compatible: + contains: + const: st,stm32-etzpc + + reg: + maxItems: 1 + + "#address-cells": + const: 1 + + "#size-cells": + const: 1 + + ranges: true + + "#feature-domain-cells": + const: 1 + + feature-domain-controller: true + +patternProperties: + "^.*@[0-9a-f]+$": + description: Peripherals + type: object + properties: + feature-domains: + minItems: 1 + description: + The phandle of the firewall controller of the peripheral and the + platform-specific firewall ID of the peripheral. + + feature-domain-names: + minItems: 1 + + required: + - feature-domains + +required: + - compatible + - reg + - "#address-cells" + - "#size-cells" + - feature-domain-controller + - "#feature-domain-cells" + - ranges + +additionalProperties: false + +examples: + - | + // In this example, the usart2 device refers to rifsc as its domain + // controller. + // Access rights are verified before creating devices. + + #include + #include + #include + + etzpc: bus@5c007000 { + compatible = "st,stm32-etzpc"; + reg = <0x5c007000 0x400>; + #address-cells = <1>; + #size-cells = <1>; + feature-domain-controller; + #feature-domain-cells = <1>; + ranges; + + usart2: serial@4c001000 { + compatible = "st,stm32h7-uart"; + reg = <0x4c001000 0x400>; + interrupts-extended = <&exti 27 IRQ_TYPE_LEVEL_HIGH>; + clocks = <&rcc USART2_K>; + resets = <&rcc USART2_R>; + wakeup-source; + dmas = <&dmamux1 43 0x400 0x5>, + <&dmamux1 44 0x400 0x1>; + dma-names = "rx", "tx"; + feature-domains = <&etzpc 17>; + }; + };