From patchwork Mon May 13 11:01:39 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Leonard Crestez X-Patchwork-Id: 1098796 Return-Path: X-Original-To: incoming-dt@patchwork.ozlabs.org Delivered-To: patchwork-incoming-dt@bilbo.ozlabs.org Authentication-Results: ozlabs.org; spf=none (mailfrom) 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=pass (p=none dis=none) header.from=nxp.com Authentication-Results: ozlabs.org; dkim=pass (1024-bit key; unprotected) header.d=nxp.com header.i=@nxp.com header.b="SFOgF7sB"; dkim-atps=neutral Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by ozlabs.org (Postfix) with ESMTP id 452dDV3wBVz9sBb for ; Mon, 13 May 2019 21:01:46 +1000 (AEST) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1729213AbfEMLBq (ORCPT ); Mon, 13 May 2019 07:01:46 -0400 Received: from mail-eopbgr50048.outbound.protection.outlook.com ([40.107.5.48]:59894 "EHLO EUR03-VE1-obe.outbound.protection.outlook.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1729208AbfEMLBp (ORCPT ); Mon, 13 May 2019 07:01:45 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=nxp.com; s=selector2; h=From:Date:Subject:Message-ID:Content-Type:MIME-Version:X-MS-Exchange-SenderADCheck; bh=0HLsto6RypR9wpu4UvLd3TTLZClxjB7pGoFCvtXVU4c=; b=SFOgF7sBtQBK53o4LPfMsqwxjaPbkdPy0vMtXfC2U1d5DYVy9pUJZBEa7RYJJJXD8Vp3C7kwn6pS3gLTPFgeaFWGSc5Vk9YLhPUDhPw+/almg2yLFXKwaD3VaRNbtM/QwmmSGbSC7iz6pu/5M5AEpM+MJdvncfUhmC/tiaBE5g8= Received: from AM0PR04MB6434.eurprd04.prod.outlook.com (20.179.252.215) by AM0PR04MB5138.eurprd04.prod.outlook.com (52.134.89.95) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.1878.24; Mon, 13 May 2019 11:01:40 +0000 Received: from AM0PR04MB6434.eurprd04.prod.outlook.com ([fe80::19be:75a:9fe:7cec]) by AM0PR04MB6434.eurprd04.prod.outlook.com ([fe80::19be:75a:9fe:7cec%7]) with mapi id 15.20.1878.024; Mon, 13 May 2019 11:01:40 +0000 From: Leonard Crestez To: Viresh Kumar , Shawn Guo , Rob Herring CC: Lucas Stach , Mark Rutland , "Rafael J. Wysocki" , Abel Vesa , Jacky Bai , Anson Huang , Aisheng Dong , Fabio Estevam , "kernel@pengutronix.de" , dl-linux-imx , "linux-arm-kernel@lists.infradead.org" , "linux-pm@vger.kernel.org" , "devicetree@vger.kernel.org" Subject: [PATCH v4 2/5] dt-bindings: imx-cpufreq-dt: Document opp-supported-hw usage Thread-Topic: [PATCH v4 2/5] dt-bindings: imx-cpufreq-dt: Document opp-supported-hw usage Thread-Index: AQHVCXs9inARAVSFcUWhxp3Op/Tu/Q== Date: Mon, 13 May 2019 11:01:39 +0000 Message-ID: <7948ab63fe5c92da280542a9a372349486d40c65.1557742902.git.leonard.crestez@nxp.com> References: In-Reply-To: Accept-Language: en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: x-originating-ip: [89.37.124.34] x-mailer: git-send-email 2.17.1 x-clientproxiedby: VI1PR04CA0134.eurprd04.prod.outlook.com (2603:10a6:803:f0::32) To AM0PR04MB6434.eurprd04.prod.outlook.com (2603:10a6:208:16c::23) authentication-results: spf=none (sender IP is ) smtp.mailfrom=leonard.crestez@nxp.com; x-ms-exchange-messagesentrepresentingtype: 1 x-ms-publictraffictype: Email x-ms-office365-filtering-correlation-id: 0ffd7468-d9b4-4faa-14c3-08d6d7926016 x-ms-office365-filtering-ht: Tenant x-microsoft-antispam: BCL:0; PCL:0; RULEID:(2390118)(7020095)(4652040)(8989299)(4534185)(4627221)(201703031133081)(201702281549075)(8990200)(5600141)(711020)(4605104)(4618075)(2017052603328)(7193020); SRVR:AM0PR04MB5138; x-ms-traffictypediagnostic: AM0PR04MB5138: x-microsoft-antispam-prvs: x-ms-oob-tlc-oobclassifiers: OLM:3631; x-forefront-prvs: 0036736630 x-forefront-antispam-report: SFV:NSPM; SFS:(10009020)(39860400002)(396003)(346002)(376002)(366004)(136003)(189003)(199004)(7736002)(2906002)(44832011)(99286004)(36756003)(6512007)(53936002)(54906003)(110136005)(476003)(2616005)(4326008)(52116002)(446003)(256004)(486006)(6116002)(3846002)(76176011)(11346002)(66066001)(8676002)(81156014)(81166006)(478600001)(118296001)(102836004)(7416002)(14454004)(68736007)(5660300002)(50226002)(8936002)(6486002)(25786009)(66446008)(64756008)(66556008)(66476007)(71190400001)(71200400001)(86362001)(6436002)(6506007)(386003)(66946007)(73956011)(316002)(26005)(305945005)(186003); DIR:OUT; SFP:1101; SCL:1; SRVR:AM0PR04MB5138; H:AM0PR04MB6434.eurprd04.prod.outlook.com; FPR:; SPF:None; LANG:en; PTR:InfoNoRecords; MX:1; A:1; received-spf: None (protection.outlook.com: nxp.com does not designate permitted sender hosts) x-ms-exchange-senderadcheck: 1 x-microsoft-antispam-message-info: Gv2/HoUT8RCeTA4yBgbY0F4VG7/Xq+pAxqaTPXQWqcWuvDtQ9aI9q8w+vXbJWbfNoDBuOak3IVfzpW0rL4hwgpmqZmNeAVEIL4Y2VPoVHkCr9rz0znDZ0lphhmTtT/mJEWSgUnzbK3dbiyRFnxOF0YdEcRc8lsL0WkPHE+MC6R8sp5QPxkgdsm+6I0SK2gn516l9gDEvJ6QG1BKzwRxwaRhjH6aGi4ihVQyT0uA8CqkSCN8QsPfdwNgQREQMsJGJNSn/Sp8wdJSgjtEujgxoVWxv3syUuFUsaDslAn4repg8y6YUkArKq2GR32PALWDArHEu17878tGdzhIQQoIeAXFKUI09CT0/MaZRCdMxXCbHyCiwXd9ZerQm+VNEqytOqnp7vSAdEP60G/U7zYcZ5bmV0vswaLYYeMdgS6iud54= Content-ID: <1609FAC9533FF0449E0A30AD2B339619@eurprd04.prod.outlook.com> MIME-Version: 1.0 X-OriginatorOrg: nxp.com X-MS-Exchange-CrossTenant-Network-Message-Id: 0ffd7468-d9b4-4faa-14c3-08d6d7926016 X-MS-Exchange-CrossTenant-originalarrivaltime: 13 May 2019 11:01:39.9489 (UTC) X-MS-Exchange-CrossTenant-fromentityheader: Hosted X-MS-Exchange-CrossTenant-id: 686ea1d3-bc2b-4c6f-a92c-d99c5c301635 X-MS-Exchange-CrossTenant-mailboxtype: HOSTED X-MS-Exchange-Transport-CrossTenantHeadersStamped: AM0PR04MB5138 Sender: devicetree-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: devicetree@vger.kernel.org The interpretation of opp-supported-hw bits for imx-cpufreq-dt driver is not very obvious so attempt to explain it. There is no OF compat string associated. Signed-off-by: Leonard Crestez Reviewed-by: Rob Herring --- .../bindings/cpufreq/imx-cpufreq-dt.txt | 37 +++++++++++++++++++ 1 file changed, 37 insertions(+) create mode 100644 Documentation/devicetree/bindings/cpufreq/imx-cpufreq-dt.txt diff --git a/Documentation/devicetree/bindings/cpufreq/imx-cpufreq-dt.txt b/Documentation/devicetree/bindings/cpufreq/imx-cpufreq-dt.txt new file mode 100644 index 000000000000..87bff5add3f9 --- /dev/null +++ b/Documentation/devicetree/bindings/cpufreq/imx-cpufreq-dt.txt @@ -0,0 +1,37 @@ +i.MX CPUFreq-DT OPP bindings +================================ + +Certain i.MX SoCs support different OPPs depending on the "market segment" and +"speed grading" value which are written in fuses. These bits are combined with +the opp-supported-hw values for each OPP to check if the OPP is allowed. + +Required properties: +-------------------- + +For each opp entry in 'operating-points-v2' table: +- opp-supported-hw: Two bitmaps indicating: + - Supported speed grade mask + - Supported market segment mask + 0: Consumer + 1: Extended Consumer + 2: Industrial + 3: Automotive + +Example: +-------- + +opp_table { + compatible = "operating-points-v2"; + opp-1000000000 { + opp-hz = /bits/ 64 <1000000000>; + /* grade >= 0, consumer only */ + opp-supported-hw = <0xf>, <0x3>; + }; + + opp-1300000000 { + opp-hz = /bits/ 64 <1300000000>; + opp-microvolt = <1000000>; + /* grade >= 1, all segments */ + opp-supported-hw = <0xe>, <0x7>; + }; +}