From patchwork Tue Jul 25 16:40:54 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Gatien CHEVALLIER X-Patchwork-Id: 13326802 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 5A514C04FDF for ; Tue, 25 Jul 2023 16:43:30 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231928AbjGYQn1 (ORCPT ); Tue, 25 Jul 2023 12:43:27 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:37974 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230319AbjGYQnS (ORCPT ); Tue, 25 Jul 2023 12:43:18 -0400 Received: from mx07-00178001.pphosted.com (mx07-00178001.pphosted.com [185.132.182.106]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 780B2E4; Tue, 25 Jul 2023 09:43:16 -0700 (PDT) Received: from pps.filterd (m0241204.ppops.net [127.0.0.1]) by mx07-00178001.pphosted.com (8.17.1.19/8.17.1.19) with ESMTP id 36PEUv6A017157; Tue, 25 Jul 2023 18:42:42 +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=tz0ap2mvWmUHTG5tNYMmmONNZ99pGcKpx1iifr8Mfvk=; b=E4CtrzoCVLlH8gNPE9JVxgc+fYqWCVzGXFxMa6WsZHr2EZ9un3SY1t5IV0hZmCLH2LXC 6NHkqtezL8dTTLOTnL+SP20ScCP8dSsI+2lnKLnOqqA9GtnDakulT5/hWh40ZBYGimJu g7y8Xehur+Fr+/lcdhyRnbuHxmKkoxoNtCRs8zVjL+xuEx1W5CuPG892cWUTcKPJ9qE7 KxhHDkYfSaDZ34gKqg01NPhZUpNh7eq60Wuwe92nfpRwSPGmhoFCTTAA7fmilEvX+Qfg fE9iNn1MOEqVUupKxqbkbHHRLRLGv3P+UPlRh2LevG048NDBi04hyCgpYs9MLHcmxqbA yQ== 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 3s2cabj9ur-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Tue, 25 Jul 2023 18:42:42 +0200 Received: from euls16034.sgp.st.com (euls16034.sgp.st.com [10.75.44.20]) by beta.dmz-eu.st.com (STMicroelectronics) with ESMTP id 3C071100049; Tue, 25 Jul 2023 18:42:41 +0200 (CEST) Received: from Webmail-eu.st.com (shfdag1node1.st.com [10.75.129.69]) by euls16034.sgp.st.com (STMicroelectronics) with ESMTP id 0A1D226DDDD; Tue, 25 Jul 2023 18:42:41 +0200 (CEST) Received: from localhost (10.201.21.121) by SHFDAG1NODE1.st.com (10.75.129.69) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.2507.21; Tue, 25 Jul 2023 18:42:40 +0200 From: Gatien Chevallier To: , , , , , , , , , , , , , , , , , , , , , , , , , Frank Rowand CC: , , , , , , , , , , , , , , , , Oleksii Moisieiev Subject: [IGNORE][PATCH v2 01/11] dt-bindings: Document common device controller bindings Date: Tue, 25 Jul 2023 18:40:54 +0200 Message-ID: <20230725164104.273965-2-gatien.chevallier@foss.st.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20230725164104.273965-1-gatien.chevallier@foss.st.com> References: <20230725164104.273965-1-gatien.chevallier@foss.st.com> MIME-Version: 1.0 X-Originating-IP: [10.201.21.121] X-ClientProxiedBy: SHFCAS1NODE2.st.com (10.75.129.73) To SHFDAG1NODE1.st.com (10.75.129.69) 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=2023-07-25_08,2023-07-25_01,2023-05-22_02 Precedence: bulk List-ID: X-Mailing-List: linux-media@vger.kernel.org From: Oleksii Moisieiev Introducing of the common device controller bindings for the controller provider and consumer devices. Those bindings are intended to allow divided system on chip into muliple domains, that can be used to configure hardware permissions. Signed-off-by: Oleksii Moisieiev --- .../feature-domain-controller.yaml | 84 +++++++++++++++++++ 1 file changed, 84 insertions(+) create mode 100644 Documentation/devicetree/bindings/feature-controllers/feature-domain-controller.yaml diff --git a/Documentation/devicetree/bindings/feature-controllers/feature-domain-controller.yaml b/Documentation/devicetree/bindings/feature-controllers/feature-domain-controller.yaml new file mode 100644 index 000000000000..90a7c38c833c --- /dev/null +++ b/Documentation/devicetree/bindings/feature-controllers/feature-domain-controller.yaml @@ -0,0 +1,84 @@ +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/feature-controllers/feature-domain-controller.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: Generic Domain Controller bindings + +maintainers: + - Oleksii Moisieiev + +description: |+ + Common Feature Domains Controller bindings properties + + Domain controllers allow to divided system on chip into multiple feature + domains that can be used to select by who hardware blocks could be accessed. + A feature domain could be a cluster of CPUs (or coprocessors), a range of + addresses or a group of hardware blocks. + + This device tree bindings can be used to bind feature domain consumer devices + with their feature domains provided by feature-domains controllers. + Feature omain controller provider can be represened by any node in the + device tree and can provide one or more configuration parameters, needed to + control parameters of the consumer device. A consumer node can refer to the + provider by phandle and a set of phandle arguments, specified by + '#feature-domain-cells' property in the device controller provider node. + + Device controllers are typically used to set the permissions of the hardware + block. The contents of the feature-domains configuration properties are + defined by the binding for the individual feature-domains controller device. + + Each node can be a consumer for the several providers. The first + configuration of 'feature-domains' or the one named 'default' is applied + before probing the device itself. + +# always select the core schema +select: true + +properties: + '#feature-domain-cells': + $ref: /schemas/types.yaml#/definitions/uint32 + description: + Number of cells in a feature-domains controller specifier; + Can be any value as specified by device tree binding documentation + of a particular provider. + + feature-domain-controller: + description: + Indicates that the node is feature-domain-controller provider. + + feature-domain-names: + $ref: '/schemas/types.yaml#/definitions/string-array' + description: + A list of feature-domains names, sorted in the same order as + feature-domains entries. Consumer drivers will use feature-domain-names + to match with existing feature-domains entries. + + feature-domains: + $ref: "/schemas/types.yaml#/definitions/phandle-array" + description: + A list of feature-domains controller specifiers, as defined by the + bindings of the feature-domain-controller provider. + +additionalProperties: true + +examples: + - | + ctrl0: ctrl@100 { + feature-domain-controller; + reg = <0x100 0x10>; + #feature-domain-cells = <2>; + }; + + ctrl1: ctrl@110 { + feature-domain-controller; + reg = <0x110 0x10>; + #feature-domain-cells = <3>; + }; + + foo@0 { + reg = <0x0 0x1>; + feature-domains = <&ctrl0 1 2>, <&ctrl1 3 4 5>; + feature-domain-names = "default", "unbind"; + };