From patchwork Mon May 13 11:01:37 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Leonard Crestez X-Patchwork-Id: 1098795 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="Gz+Rpwjm"; dkim-atps=neutral Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by ozlabs.org (Postfix) with ESMTP id 452dDQ1KwLz9s4Y for ; Mon, 13 May 2019 21:01:42 +1000 (AEST) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1729207AbfEMLBl (ORCPT ); Mon, 13 May 2019 07:01:41 -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 S1727838AbfEMLBk (ORCPT ); Mon, 13 May 2019 07:01:40 -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=MO6gaIlOGNiwxpeyq1/UarEoxpVmmpAv5XZMDwy+bUs=; b=Gz+RpwjmBj6SdA18JLV7LQ9yubJj+S9UcbQ32iNxzibwDEzS5AVFExUnHwF+yz5olPPlF/oaZy7Jp/D9J7jubupK4cqtbyDGulQC8ivC4aRs9tOTwN2tlopSqiIJUoGORDD5ZoDrTIcPzHSD3IvKvoCcDAF+CpSY7AILsQKzD0c= 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 11:01:37 +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 11:01:37 +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 0/5] cpufreq: Add imx-cpufreq-dt driver for speed grading Thread-Topic: [PATCH v4 0/5] cpufreq: Add imx-cpufreq-dt driver for speed grading Thread-Index: AQHVCXs8MBVHQc8rXk+VbTw870d1OQ== Date: Mon, 13 May 2019 11:01:37 +0000 Message-ID: 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: c118f5d9-fc81-42ec-7f23-08d6d7925e81 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-ms-exchange-purlcount: 3 x-microsoft-antispam-prvs: x-ms-oob-tlc-oobclassifiers: OLM:8273; x-forefront-prvs: 0036736630 x-forefront-antispam-report: SFV:NSPM; SFS:(10009020)(39860400002)(396003)(346002)(376002)(366004)(136003)(189003)(199004)(7736002)(2906002)(6306002)(44832011)(99286004)(36756003)(6512007)(53936002)(54906003)(110136005)(476003)(2616005)(4326008)(52116002)(256004)(486006)(6116002)(3846002)(14444005)(66066001)(8676002)(81156014)(81166006)(478600001)(102836004)(7416002)(14454004)(966005)(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: gN2oYHLkf37KAcdh14g8gP4EzbCxF7hyWR4jmtg42lS5mBttH62C26wMF0C6QqIAuHFB/jkUS94AgBIC4hBmvWpWgUwvWPeBmy0vjg5S25qdEVik9iIF1vQsICnShw4wajtazY2QU8zkuylr4wFKGgUgci3dy+2stIqUIp7GWjVjdInSUhN7hqKsAMD5HNxutUGeF/wZYsORcoZS4j4dvTRQF+uBQ2tAxB1jWX2Q1bXPZuowhYdKW+rrS9BKqFntrOsUVJHx4u6y3jr4XUYrc/9UX3KcwO+pFC0zomnKFwrvOILX399Tox8eYsEZP+ntyMaHvxLA9TUFQfUSc4MwLUYS3vAQhrp1rXH3zjwh+TNDPJfMouAfMdmi/iCUIdCnokhUDi4Wxer6NJW7ma2mWhC8h9I0IynGr/sZmka9CS4= Content-ID: <13C41D9609273F49A77AE0DA0AB8AA6B@eurprd04.prod.outlook.com> MIME-Version: 1.0 X-OriginatorOrg: nxp.com X-MS-Exchange-CrossTenant-Network-Message-Id: c118f5d9-fc81-42ec-7f23-08d6d7925e81 X-MS-Exchange-CrossTenant-originalarrivaltime: 13 May 2019 11:01:37.2824 (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 Right now in upstream imx8m cpufreq support just lists a common subset of OPPs because the higher ones should only be attempted after checking speed grading in fuses. Driver reads from nvmem and calls dev_pm_opp_set_supported_hw before registering cpufreq-dt. Changes since v3: * Drop default m entirely (Viresh) Link to v3: https://patchwork.kernel.org/project/linux-arm-kernel/list/?series=114685 Changes since v2: * Minor reformatting in Kconfig (Viresh) * Open-code imx_cpufreq_dt_match_node (Viresh) * Add mkt_segment bits to supported_hw and update .dtsi to match after reviewing latest datasheets. * Add devicetree list (keep forgetting dts needs to be reviewed) Link to v2: https://patchwork.kernel.org/project/linux-arm-kernel/list/?series=113163 Link to v1 (RFC): https://patchwork.kernel.org/patch/10916769/ Driver is built as a module. It depends on nvmem-imx which can also be a module. I never noticed anything wrong with going above the fused speed grading however it's technically unsafe so the cpufreq code changes should go in before DT changes. Leonard Crestez (5): cpufreq: Add imx-cpufreq-dt driver dt-bindings: imx-cpufreq-dt: Document opp-supported-hw usage arm64: dts: imx8mm: Add cpu speed grading and all OPPs arm64: dts: imx8mq: Add cpu speed grading and all OPPs arm64: defconfig: ARM_IMX_CPUFREQ_DT=m .../bindings/cpufreq/imx-cpufreq-dt.txt | 37 +++++++ arch/arm64/boot/dts/freescale/imx8mm.dtsi | 17 +++- arch/arm64/boot/dts/freescale/imx8mq.dtsi | 26 ++++- arch/arm64/configs/defconfig | 1 + drivers/cpufreq/Kconfig.arm | 9 ++ drivers/cpufreq/Makefile | 1 + drivers/cpufreq/cpufreq-dt-platdev.c | 3 + drivers/cpufreq/imx-cpufreq-dt.c | 96 +++++++++++++++++++ drivers/soc/imx/soc-imx8.c | 3 + 9 files changed, 191 insertions(+), 2 deletions(-) create mode 100644 Documentation/devicetree/bindings/cpufreq/imx-cpufreq-dt.txt create mode 100644 drivers/cpufreq/imx-cpufreq-dt.c