From patchwork Mon Feb 27 17:21:05 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Krishna Yarlagadda X-Patchwork-Id: 5898 Return-Path: Delivered-To: ouuuleilei@gmail.com Received: by 2002:a5d:5915:0:0:0:0:0 with SMTP id v21csp2547839wrd; Mon, 27 Feb 2023 09:30:59 -0800 (PST) X-Google-Smtp-Source: AK7set9quCKgNtelWdUc6A7Niaa2yjBfd94vXwRg7IoRFKa3kG3G9Y88+v0cdGpwautMCpYnzZab X-Received: by 2002:a17:906:1912:b0:872:6bd0:d2b with SMTP id a18-20020a170906191200b008726bd00d2bmr34441587eje.45.1677519059073; Mon, 27 Feb 2023 09:30:59 -0800 (PST) ARC-Seal: i=2; a=rsa-sha256; t=1677519059; cv=pass; d=google.com; s=arc-20160816; b=xl136LYplsqhiygafMd/8NbpPGYH2VSiVgvSAVPYKgexHWmzfmwIQE15c4DYicVmJ7 EJD/5Z+zOs9ZRowhZS1wOvF85BmRLUNFSABKSZv6db4uHXZ+gSDI/0rC1khRyTWWjAzb xIjzzW46skvh16YifFUN8q+HEivQkeTb2vKKwDB5XC7Z3GpPX3wfqtqmNaIsNsTJGTja Htt+IlXKrG/f1Dm8uQpQW3h58MTn4ElRCkIZ47BngPX85z/kgj8bfdHxOZLnAUm2ypjd f0QpzqnJL/ykbNyw0jNxofTCxB12R+bJDUFpWcC9ixRevT27JukZTsFIRigiqWaeszZu B1uA== ARC-Message-Signature: i=2; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:mime-version:message-id:date:subject:cc:to:from :dkim-signature; bh=cWyR9SUzmlm1JpWbJSgfTsjEp3U/GqLUSExaun4y5Kc=; b=sAiBBByf8YbIMP8M8jsYS4ZvbHOyG4c4GbZK+CPo6Nk2xKa+jzZS8uvwjyv72m2qPB UcKg64Bi7AXpLxSfyLgs7foqIQNCZq71b9woRC77rmCkajZEV5vnE9pYsKLuB+EZomz2 9CeKh8sy23xWu3Cy4/FdmWJcixrmDBSiCqxj7POSAOle/Ceqg/N+0KwRTWyX+M+MZc+G dVTWgUz7IkxmroD5zhvo8bWGFo6iATEOuQ72NTUMu5pg8c40bjtJUx6Ftsd/QfAd3n34 fTWw63QI639Zm1bXTWWqd0JdRJCyXnjlRo1ThAhyNjLaHnschuoqlzZ5mZfOkktsL5BR lE9g== ARC-Authentication-Results: i=2; mx.google.com; dkim=pass header.i=@Nvidia.com header.s=selector2 header.b=e3hAlTJT; arc=pass (i=1 spf=pass spfdomain=nvidia.com dmarc=pass fromdomain=nvidia.com); spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=pass (p=REJECT sp=REJECT dis=NONE) header.from=nvidia.com Received: from out1.vger.email (out1.vger.email. [2620:137:e000::1:20]) by mx.google.com with ESMTP id f2-20020a170906560200b008e0bd541c65si9452305ejq.872.2023.02.27.09.30.36; Mon, 27 Feb 2023 09:30:59 -0800 (PST) Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) client-ip=2620:137:e000::1:20; Authentication-Results: mx.google.com; dkim=pass header.i=@Nvidia.com header.s=selector2 header.b=e3hAlTJT; arc=pass (i=1 spf=pass spfdomain=nvidia.com dmarc=pass fromdomain=nvidia.com); spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=pass (p=REJECT sp=REJECT dis=NONE) header.from=nvidia.com Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229917AbjB0RV3 (ORCPT + 99 others); Mon, 27 Feb 2023 12:21:29 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:59630 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229781AbjB0RV1 (ORCPT ); Mon, 27 Feb 2023 12:21:27 -0500 Received: from NAM10-DM6-obe.outbound.protection.outlook.com (mail-dm6nam10on2049.outbound.protection.outlook.com [40.107.93.49]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 9495622790; Mon, 27 Feb 2023 09:21:26 -0800 (PST) ARC-Seal: i=1; a=rsa-sha256; s=arcselector9901; d=microsoft.com; cv=none; b=ir+GAIt1s4cNBzE2FBCI2LTkpg8PWlJ5LCSlJz/w2UDRcrUn5VbKnv8Uvp6mDfboFi+dT9qihHxnMeP2CAth5NfSZyNxs2RW4MQ7rFkkVrVJsgzo12Fc+xj6G/hN7K3PsousvNUnt+gdq+XEi6Rv1XcXOrQvtgddbtlkgtKafb1Si6TO0fq6Y9lBu+zPTpXzpxyVZsCx2FkJF3w+4XHum6AfbOOci1R++jD//ttpJ3A58Dzc3ghr5S5l5dG1dml6KX0iQ9lnwDl4uEGXALr6zV+AZxKGG2XqNfI/W0Dt7H91nxJRpNvV2kTpKq/7EPkwNCh5bV84Nk0Xq6JoU5Ni7Q== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=microsoft.com; s=arcselector9901; h=From:Date:Subject:Message-ID:Content-Type:MIME-Version:X-MS-Exchange-AntiSpam-MessageData-ChunkCount:X-MS-Exchange-AntiSpam-MessageData-0:X-MS-Exchange-AntiSpam-MessageData-1; bh=cWyR9SUzmlm1JpWbJSgfTsjEp3U/GqLUSExaun4y5Kc=; b=GVsaP0jc3pHu/AN3pGhOeCLML0xBml5hgsJozsgbIdYoARK4C4cG3CWZvpoxXfEdY4NfLVuL3O0aeCYE4fbaPeMaQ81uH3WFXcnCIaOPx+KhUvtE0I5vAHJcx5uAs7QBL0MreZ3q4jC578gelzEGVPfOG4DXQnOzBDGBQPtWKeWyNEs5rEaYqMKBZU+AVy6BSvR1rgHqNF30wLSO3Jc8cZcrEuDQ9DqwWFF0zjUnLxQfdKqAVzHF1Q08rJyd//+hzZasgLz5r8y5UU8KMtx+hFnBcgemVNpvewkahUiDMVmf9VZCDM4gjLEsCuYEcb0ObkrY0OmL3wlxcHr/SFzu+Q== ARC-Authentication-Results: i=1; mx.microsoft.com 1; spf=pass (sender ip is 216.228.117.160) smtp.rcpttodomain=kernel.org smtp.mailfrom=nvidia.com; dmarc=pass (p=reject sp=reject pct=100) action=none header.from=nvidia.com; dkim=none (message not signed); arc=none DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=Nvidia.com; s=selector2; h=From:Date:Subject:Message-ID:Content-Type:MIME-Version:X-MS-Exchange-SenderADCheck; bh=cWyR9SUzmlm1JpWbJSgfTsjEp3U/GqLUSExaun4y5Kc=; b=e3hAlTJTlnuOkSYI1BGxghUtdI6IVawZ8zK659ecK+XvugQH1zE+32V8ATlLu8mg7Mf7tBTDxZFBaYqbPimkp3th2/aRjRYE/DsoDaT1oAHb2m5r5mGmfpcJaoRKYu1aaBY5p0R8dHvrfLNqA9l70kyqSAF5R46X72QEQJnDgvy7rx9Vf009Haf5NAu68ia/heW+yonP3nSpkgO1ASUgn/3qqYu+G1ZmO2IB4iVKCkPFRNni1SblsCqtNiE2hOUKQqtcBYJPbL9L1if9X6s4ADD2Slyd+udzQYFeHYh/0kczdGAMXvNKTSYPpao30/yrshOanSq2q+7ZYXCICWC17w== Received: from DS7PR06CA0012.namprd06.prod.outlook.com (2603:10b6:8:2a::22) by DM4PR12MB5167.namprd12.prod.outlook.com (2603:10b6:5:396::10) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.6134.29; Mon, 27 Feb 2023 17:21:24 +0000 Received: from DS1PEPF0000B073.namprd05.prod.outlook.com (2603:10b6:8:2a:cafe::31) by DS7PR06CA0012.outlook.office365.com (2603:10b6:8:2a::22) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.6134.29 via Frontend Transport; Mon, 27 Feb 2023 17:21:24 +0000 X-MS-Exchange-Authentication-Results: spf=pass (sender IP is 216.228.117.160) smtp.mailfrom=nvidia.com; dkim=none (message not signed) header.d=none;dmarc=pass action=none header.from=nvidia.com; Received-SPF: Pass (protection.outlook.com: domain of nvidia.com designates 216.228.117.160 as permitted sender) receiver=protection.outlook.com; client-ip=216.228.117.160; helo=mail.nvidia.com; pr=C Received: from mail.nvidia.com (216.228.117.160) by DS1PEPF0000B073.mail.protection.outlook.com (10.167.17.4) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.6156.12 via Frontend Transport; Mon, 27 Feb 2023 17:21:24 +0000 Received: from rnnvmail205.nvidia.com (10.129.68.10) by mail.nvidia.com (10.129.200.66) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.986.5; Mon, 27 Feb 2023 09:21:23 -0800 Received: from rnnvmail204.nvidia.com (10.129.68.6) by rnnvmail205.nvidia.com (10.129.68.10) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.986.37; Mon, 27 Feb 2023 09:21:22 -0800 Received: from BUILDSERVER-IO-L4T.nvidia.com (10.127.8.14) by mail.nvidia.com (10.129.68.6) with Microsoft SMTP Server id 15.2.986.5 via Frontend Transport; Mon, 27 Feb 2023 09:21:17 -0800 From: Krishna Yarlagadda To: , , , , , , , , , CC: , , , , Krishna Yarlagadda Subject: [Patch V6 0/3] Tegra TPM driver with HW flow control Date: Mon, 27 Feb 2023 22:51:05 +0530 Message-ID: <20230227172108.8206-1-kyarlagadda@nvidia.com> X-Mailer: git-send-email 2.17.1 X-NVConfidentiality: public MIME-Version: 1.0 X-EOPAttributedMessage: 0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: DS1PEPF0000B073:EE_|DM4PR12MB5167:EE_ X-MS-Office365-Filtering-Correlation-Id: 293bf0c4-b311-4da8-8224-08db18e70d7c X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0; X-Microsoft-Antispam-Message-Info: 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 X-Forefront-Antispam-Report: CIP:216.228.117.160;CTRY:US;LANG:en;SCL:1;SRV:;IPV:NLI;SFV:NSPM;H:mail.nvidia.com;PTR:dc6edge1.nvidia.com;CAT:NONE;SFS:(13230025)(4636009)(346002)(39860400002)(396003)(136003)(376002)(451199018)(36840700001)(40470700004)(46966006)(4326008)(70586007)(70206006)(83380400001)(36860700001)(41300700001)(426003)(47076005)(316002)(36756003)(8676002)(336012)(7636003)(54906003)(110136005)(8936002)(82740400003)(7416002)(82310400005)(5660300002)(921005)(7696005)(86362001)(356005)(40480700001)(478600001)(186003)(26005)(40460700003)(2906002)(2616005)(1076003)(6666004)(107886003)(83996005)(2101003);DIR:OUT;SFP:1101; X-OriginatorOrg: Nvidia.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 27 Feb 2023 17:21:24.4270 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: 293bf0c4-b311-4da8-8224-08db18e70d7c X-MS-Exchange-CrossTenant-Id: 43083d15-7273-40c1-b7db-39efd9ccc17a X-MS-Exchange-CrossTenant-OriginalAttributedTenantConnectingIp: TenantId=43083d15-7273-40c1-b7db-39efd9ccc17a;Ip=[216.228.117.160];Helo=[mail.nvidia.com] X-MS-Exchange-CrossTenant-AuthSource: DS1PEPF0000B073.namprd05.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: DM4PR12MB5167 X-Spam-Status: No, score=-1.1 required=5.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,DKIM_VALID_EF,FORGED_SPF_HELO, RCVD_IN_DNSWL_NONE,RCVD_IN_MSPIKE_H2,SPF_HELO_PASS,SPF_NONE autolearn=no autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on lindbergh.monkeyblade.net Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org X-getmail-retrieved-from-mailbox: =?utf-8?q?INBOX?= X-GMAIL-THRID: =?utf-8?q?1758986609819135027?= X-GMAIL-MSGID: =?utf-8?q?1759006225146766394?= TPM interface spec defines flow control where TPM device would drive MISO at same cycle as last address bit sent by controller on MOSI. This state of wait can be detected by software reading the MISO line or by controller hardware. Support sending transfers to controller in single message and handle flow control in hardware. Half duplex controllers have to support flow control in hardware. Tegra234 and Tegra241 chips have QSPI controller that supports TPM Interface Specification (TIS) flow control. Since the controller only supports half duplex, SW wait polling (flow control using full duplex transfers) method implemented in tpm_tis_spi_main.c will not work and have to us HW flow control. Updates in this patch set - Tegra QSPI identifies itself as half duplex. - TPM TIS SPI driver skips flow control for half duplex and send transfers in single message for controller to handle it. - TPM device identifies as TPM device for controller to detect and enable HW TPM wait poll feature. Verified with a TPM device on Tegra241 ref board using TPM2 tools. V6: - Fix typo in chip name Tegra234. - Debug logs change skipped to be sent later. - Consistent usage of soc flag. V5: - No SPI bus locking. V4: - Split api change to different patch. - Describe TPM HW flow control. V3: - Use SPI device mode flag and SPI controller flags. - Drop usage of device tree flags. - Generic TPM half duplex controller handling. - HW & SW flow control for TPM. Drop additional driver. V2: - Fix dt schema errors. Krishna Yarlagadda (3): spi: Add TPM HW flow flag tpm_tis-spi: Support hardware wait polling spi: tegra210-quad: Enable TPM wait polling drivers/char/tpm/tpm_tis_spi_main.c | 92 ++++++++++++++++++++++++++++- drivers/spi/spi-tegra210-quad.c | 14 +++++ include/linux/spi/spi.h | 7 ++- 3 files changed, 108 insertions(+), 5 deletions(-)