From patchwork Thu Mar 23 00:06:51 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Brad Larson X-Patchwork-Id: 666359 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 EB2FEC7619A for ; Thu, 23 Mar 2023 00:10:18 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230363AbjCWAKQ (ORCPT ); Wed, 22 Mar 2023 20:10:16 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:44034 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229480AbjCWAKK (ORCPT ); Wed, 22 Mar 2023 20:10:10 -0400 Received: from NAM02-BN1-obe.outbound.protection.outlook.com (mail-bn1nam02on2041.outbound.protection.outlook.com [40.107.212.41]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id A712D2F791; Wed, 22 Mar 2023 17:09:44 -0700 (PDT) ARC-Seal: i=1; a=rsa-sha256; s=arcselector9901; d=microsoft.com; cv=none; b=gM/NWK2YiH6wlo4oR96ZLK3jvwhnACW/53ACmNwXSRygTwtyIxPoyyY34oawIpIYtmVJIMEAo/zYF+bGzm1Meb2EF/CQHusE4pGSHbVZYU5kwkPdn41ajL5INdCu44BHlzWxfRQueupTKBEy2UfSLbB3cODwOsDgWtgRQk0S5fvE6ie0RinhgkfQ74DBDpGOm8ACAwfonxHcJPyz2P2JKcuf1vV8GnlAMvmZSP4L7B7HHs2P/aKrZnvCHBylyCqENLW6Yz+ix5ndJsS9kIT6zkk74ZE0FfEl91m8xgBFQsqKwPf0+/hQsqMd2m26DwbeI73YYBXEVMwIUkobnyzpiw== 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=mpnIb1O3iD9+RUSdP9aH5CNIYVv5t5KX4+QyjF/xBm8=; b=Ct4KrryDmYMHKg1dX3sm/3RpSz+MqLA10AcqtRdn1yz4O70gW98wFLbY/JW9G7SGpxwojNlf8C+fTos33VSJiHDoCawH0x5d1yPAu+9CGnfyiz2ALchxX75FJeZUMWAARHRgzmE3VnanevtzqzJpxv2cC6pr0M2z0pukDE1/eJV2F+ygd8aPvqrAy2pv+n+TfccTvo6pa6KudEBstYMAI6yUuXQcNIXFXoLE6vbbwnlzYPRMpG2QhzGwGlkeV8oCDQR/iHxJokmgbC1GCgLbYHlfvbvHBnpycrlPlSRWU+8SpX6GVFh+ddEkRr+ixRZBRrH1ituEvovl52wIY6iqQw== ARC-Authentication-Results: i=1; mx.microsoft.com 1; spf=pass (sender ip is 165.204.84.17) smtp.rcpttodomain=lists.infradead.org smtp.mailfrom=amd.com; dmarc=pass (p=quarantine sp=quarantine pct=100) action=none header.from=amd.com; dkim=none (message not signed); arc=none DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=amd.com; s=selector1; h=From:Date:Subject:Message-ID:Content-Type:MIME-Version:X-MS-Exchange-SenderADCheck; bh=mpnIb1O3iD9+RUSdP9aH5CNIYVv5t5KX4+QyjF/xBm8=; b=MfejADrs6qf+YEWvrBc48mpJlGB+q6kNxuCkipNq/0Pe60DnIBbdgeOwCOOot5wTU1kHmOV9pV+tblbFK9XLhqNYOOR1n0nLiWgLeQrONeBRTwtthTT71HUG2Fi+x+6793zTSkFQvMKoi4dXE8VK6n1ocwN3Z0fAeKrjBpcHXFo= Received: from BN9PR03CA0469.namprd03.prod.outlook.com (2603:10b6:408:139::24) by SA1PR12MB8144.namprd12.prod.outlook.com (2603:10b6:806:337::15) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.6178.37; Thu, 23 Mar 2023 00:09:22 +0000 Received: from BL02EPF000100D1.namprd05.prod.outlook.com (2603:10b6:408:139:cafe::c5) by BN9PR03CA0469.outlook.office365.com (2603:10b6:408:139::24) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.6178.37 via Frontend Transport; Thu, 23 Mar 2023 00:09:22 +0000 X-MS-Exchange-Authentication-Results: spf=pass (sender IP is 165.204.84.17) smtp.mailfrom=amd.com; dkim=none (message not signed) header.d=none;dmarc=pass action=none header.from=amd.com; Received-SPF: Pass (protection.outlook.com: domain of amd.com designates 165.204.84.17 as permitted sender) receiver=protection.outlook.com; client-ip=165.204.84.17; helo=SATLEXMB04.amd.com; pr=C Received: from SATLEXMB04.amd.com (165.204.84.17) by BL02EPF000100D1.mail.protection.outlook.com (10.167.241.205) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.20.6178.30 via Frontend Transport; Thu, 23 Mar 2023 00:09:22 +0000 Received: from platform-dev1.pensando.io (10.180.168.240) by SATLEXMB04.amd.com (10.181.40.145) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.2375.34; Wed, 22 Mar 2023 19:09:19 -0500 From: Brad Larson To: CC: , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , Subject: [PATCH v12 09/15] spi: cadence-quadspi: Add compatible for AMD Pensando Elba SoC Date: Wed, 22 Mar 2023 17:06:51 -0700 Message-ID: <20230323000657.28664-10-blarson@amd.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20230323000657.28664-1-blarson@amd.com> References: <20230323000657.28664-1-blarson@amd.com> MIME-Version: 1.0 X-Originating-IP: [10.180.168.240] X-ClientProxiedBy: SATLEXMB03.amd.com (10.181.40.144) To SATLEXMB04.amd.com (10.181.40.145) X-EOPAttributedMessage: 0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: BL02EPF000100D1:EE_|SA1PR12MB8144:EE_ X-MS-Office365-Filtering-Correlation-Id: 3fe823b9-70b1-4af7-8352-08db2b32dad0 X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0; X-Microsoft-Antispam-Message-Info: BNj/wH4N1SA9MJXhSqx4GO9TS5rO3yaeekqIxVFMhXbn89BtB0qAtLGrSLAN17Z9mrzo63/iwujkHPk09e3Z5JcizvCEGk1vpdDhYsw/bzeoaQi6XYtGOlkF5eWv2sdLViX0ifqQzxrO2ZbEx1tdq2xkIWxp4InElLh/0Y3t9j46AQ24calq5S/CIZ+WEZ0nWtlT327qhv/gqgH0OMeZEQqY6fStUZkhbAwSPauqGMLBlHlMxIvi3DWrXkND12jNv9/ZLZi8yhjEiYTIDWw0T48plcDbkN3vNIJqNWJF91vwLa2g3c9eJBjAipbhJ8s5mwoYJz7gVQhaTWbJOL5ryBYpaB/Bs2PZcTzvprSWM7kSUb9/zVtjc9Pz4XGvj+fPvDo29KQD+7B1rLLWKimw6Lq+5XXDmiS2jdFyWk8f0e2gSPwLJCKlPS1+2VPWUiMymLgjg/lgJEk+wXwHUl2RTKgVlcaL6ytNdF9iI2gCZLErpMOqSOx0irYoEYN6mq+IysoHnmEp1xQl4hk8wEdpkI1C4aCs+vtJNKrqQtDULKBFcB/dzKaV54xNvCzRztMWirUiIhrwT66WrAGl42q7piba64iJOpgA7116XL5pQlASfT7WSATSKuYWpNOPisOYPslx68BXoPRaoOZUCl5+KqBPSbjCsYfQcie//HjEDjT7fqdL1uvMeuKN4DdjsQH9efTx+soIFYLsKo8qCBYatoOWd4JUPZ3G/7EzOnJICdY= X-Forefront-Antispam-Report: CIP:165.204.84.17; CTRY:US; LANG:en; SCL:1; SRV:; IPV:CAL; SFV:NSPM; H:SATLEXMB04.amd.com; PTR:InfoDomainNonexistent; CAT:NONE; SFS:(13230025)(4636009)(396003)(346002)(376002)(39860400002)(136003)(451199018)(36840700001)(40470700004)(46966006)(8936002)(336012)(36756003)(7416002)(40460700003)(7406005)(5660300002)(40480700001)(426003)(47076005)(36860700001)(2616005)(2906002)(82310400005)(478600001)(316002)(54906003)(81166007)(41300700001)(82740400003)(4326008)(1076003)(26005)(8676002)(6916009)(70586007)(356005)(6666004)(186003)(16526019)(70206006)(36900700001); DIR:OUT; SFP:1101; X-OriginatorOrg: amd.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 23 Mar 2023 00:09:22.1108 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: 3fe823b9-70b1-4af7-8352-08db2b32dad0 X-MS-Exchange-CrossTenant-Id: 3dd8961f-e488-4e60-8e11-a82d994e183d X-MS-Exchange-CrossTenant-OriginalAttributedTenantConnectingIp: TenantId=3dd8961f-e488-4e60-8e11-a82d994e183d; Ip=[165.204.84.17]; Helo=[SATLEXMB04.amd.com] X-MS-Exchange-CrossTenant-AuthSource: BL02EPF000100D1.namprd05.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: SA1PR12MB8144 Precedence: bulk List-ID: X-Mailing-List: devicetree@vger.kernel.org The AMD Pensando Elba SoC has the Cadence QSPI controller integrated. The quirk CQSPI_NEEDS_APB_AHB_HAZARD_WAR is added and if enabled a dummy readback from the controller is performed to ensure synchronization. Signed-off-by: Brad Larson --- v9 changes: - Rebase to linux-next 6.2.0-rc1 --- drivers/spi/spi-cadence-quadspi.c | 19 +++++++++++++++++++ 1 file changed, 19 insertions(+) diff --git a/drivers/spi/spi-cadence-quadspi.c b/drivers/spi/spi-cadence-quadspi.c index 64b6a460d739..ad82d2ab3442 100644 --- a/drivers/spi/spi-cadence-quadspi.c +++ b/drivers/spi/spi-cadence-quadspi.c @@ -40,6 +40,7 @@ #define CQSPI_SUPPORT_EXTERNAL_DMA BIT(2) #define CQSPI_NO_SUPPORT_WR_COMPLETION BIT(3) #define CQSPI_SLOW_SRAM BIT(4) +#define CQSPI_NEEDS_APB_AHB_HAZARD_WAR BIT(5) /* Capabilities */ #define CQSPI_SUPPORTS_OCTAL BIT(0) @@ -90,6 +91,7 @@ struct cqspi_st { u32 pd_dev_id; bool wr_completion; bool slow_sram; + bool apb_ahb_hazard; }; struct cqspi_driver_platdata { @@ -1004,6 +1006,13 @@ static int cqspi_indirect_write_execute(struct cqspi_flash_pdata *f_pdata, if (cqspi->wr_delay) ndelay(cqspi->wr_delay); + /* + * If a hazard exists between the APB and AHB interfaces, perform a + * dummy readback from the controller to ensure synchronization. + */ + if (cqspi->apb_ahb_hazard) + readl(reg_base + CQSPI_REG_INDIRECTWR); + while (remaining > 0) { size_t write_words, mod_bytes; @@ -1734,6 +1743,8 @@ static int cqspi_probe(struct platform_device *pdev) cqspi->wr_completion = false; if (ddata->quirks & CQSPI_SLOW_SRAM) cqspi->slow_sram = true; + if (ddata->quirks & CQSPI_NEEDS_APB_AHB_HAZARD_WAR) + cqspi->apb_ahb_hazard = true; if (of_device_is_compatible(pdev->dev.of_node, "xlnx,versal-ospi-1.0")) @@ -1859,6 +1870,10 @@ static const struct cqspi_driver_platdata versal_ospi = { .get_dma_status = cqspi_get_versal_dma_status, }; +static const struct cqspi_driver_platdata pensando_cdns_qspi = { + .quirks = CQSPI_NEEDS_APB_AHB_HAZARD_WAR | CQSPI_DISABLE_DAC_MODE, +}; + static const struct of_device_id cqspi_dt_ids[] = { { .compatible = "cdns,qspi-nor", @@ -1884,6 +1899,10 @@ static const struct of_device_id cqspi_dt_ids[] = { .compatible = "intel,socfpga-qspi", .data = &socfpga_qspi, }, + { + .compatible = "amd,pensando-elba-qspi", + .data = &pensando_cdns_qspi, + }, { /* end of table */ } };