From patchwork Wed Apr 7 15:30:52 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Robin Gong X-Patchwork-Id: 12187217 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-14.0 required=3.0 tests=BAYES_00, DATE_IN_FUTURE_06_12,DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,MSGID_FROM_MTA_HEADER,SPF_HELO_NONE,SPF_PASS, UNWANTED_LANGUAGE_BODY,URIBL_BLOCKED,USER_AGENT_GIT autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 4EC30C433B4 for ; Wed, 7 Apr 2021 07:16:29 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 2B2786139B for ; Wed, 7 Apr 2021 07:16:29 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1349369AbhDGHQg (ORCPT ); Wed, 7 Apr 2021 03:16:36 -0400 Received: from mail-eopbgr150044.outbound.protection.outlook.com ([40.107.15.44]:28997 "EHLO EUR01-DB5-obe.outbound.protection.outlook.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1346438AbhDGHQf (ORCPT ); Wed, 7 Apr 2021 03:16:35 -0400 ARC-Seal: i=1; a=rsa-sha256; s=arcselector9901; d=microsoft.com; cv=none; b=Zk2UhfLvBoEw4JcUaq5pyZoRNdhyFfrTd3iP/ha5+fCsM0bjRLed+jAvJZk7Y6kelmNlWYvPe90MVXwDgqe5WXNnARRu7AXuPdE3AiqvgMIjeCJ3D2G1AtJoXx2iBwKLECzEMYpMzofPC1jQqMbBKbDRXFUO4Evoy5v+lwpwgn4UC+cVWjzGrTguFsFzBxB7Rb1eljOflZm/gXujkRJ7oK11EJiTAj1oAmLZVFO5AXfE66ypvS6u7FUWlXeq1jQguNGtDTeEx2BtQOqUkcoTIp5j1800aDnLH+lOvuBvg7Dri30/NbMvYyeSvEDMyUSO8kDDxktJE8rPzxKDrPk7vg== 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-SenderADCheck; bh=Rpwm2cmTe5xyTNoXrx30icysSCF1vy3vcYas8FeT17k=; b=Ou8LlgMbQ/HqMQ5sc9ICV0KaFTfKcnVGHxPLjqsfLs4fi6Pj4lGEf2ll5GNNm0Ywf3IMs6a2vTGuYiHcPy2RG+f/cNlFFox9l0G9fE1gKEGuDNsDxXEmGqIE/tj7T1qI3gs39za0eISVTL+Fb9gTUCROnzho1N1SIA2pBDt5RIzAs3afX3hvn9U/WXcgoUzeiyDJfWSnYJFaEOj1fQHWmlUfKgzmGHQOr0eFxWHg31h+lbLHhRd/asGiOc65UkGFAb1AK18sZkS3t/cXh5W71wHuZTB+q6bcICPFPF0MQsHGgLxyMnhDKjHp7mkZoTRQXjyGEzwNnyniUYC8iB5uZg== ARC-Authentication-Results: i=1; mx.microsoft.com 1; spf=pass smtp.mailfrom=nxp.com; dmarc=pass action=none header.from=nxp.com; dkim=pass header.d=nxp.com; arc=none 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=Rpwm2cmTe5xyTNoXrx30icysSCF1vy3vcYas8FeT17k=; b=geZTdL2LXh9Ja7VNUXUMb6F1mNI2jotcldFWAUCw1EJRT2M59xsmoaqYLQZhUi+9Tbs5Pn8pxOhTvgvp/evtkmsIAAf+or1+r0F89bVYJH1DqzFj2xdyuK3O1Za2TIGgcTqluLkSfO9peVOrngUj2tYdBLB3xt95kv4Po232SHk= Authentication-Results: kernel.org; dkim=none (message not signed) header.d=none;kernel.org; dmarc=none action=none header.from=nxp.com; Received: from VE1PR04MB6638.eurprd04.prod.outlook.com (2603:10a6:803:119::15) by VE1PR04MB6509.eurprd04.prod.outlook.com (2603:10a6:803:125::11) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.3999.28; Wed, 7 Apr 2021 07:16:23 +0000 Received: from VE1PR04MB6638.eurprd04.prod.outlook.com ([fe80::e8e2:7756:13bc:2cb3]) by VE1PR04MB6638.eurprd04.prod.outlook.com ([fe80::e8e2:7756:13bc:2cb3%7]) with mapi id 15.20.3999.032; Wed, 7 Apr 2021 07:16:23 +0000 From: Robin Gong To: vkoul@kernel.org, mark.rutland@arm.com, broonie@kernel.org, robh+dt@kernel.org, catalin.marinas@arm.com, will.deacon@arm.com, shawnguo@kernel.org, festevam@gmail.com, s.hauer@pengutronix.de, martin.fuzzey@flowbird.group, u.kleine-koenig@pengutronix.de, dan.j.williams@intel.com, matthias.schiffer@ew.tq-group.com, frieder.schrempf@kontron.de, m.felsch@pengutronix.de, xiaoning.wang@nxp.com Cc: linux-spi@vger.kernel.org, linux-kernel@vger.kernel.org, devicetree@vger.kernel.org, linux-arm-kernel@lists.infradead.org, kernel@pengutronix.de, dmaengine@vger.kernel.org, linux-imx@nxp.com Subject: [PATCH v14 08/12] spi: imx: remove ERR009165 workaround on i.mx6ul Date: Wed, 7 Apr 2021 23:30:52 +0800 Message-Id: <1617809456-17693-9-git-send-email-yibin.gong@nxp.com> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1617809456-17693-1-git-send-email-yibin.gong@nxp.com> References: <1617809456-17693-1-git-send-email-yibin.gong@nxp.com> X-Originating-IP: [119.31.174.66] X-ClientProxiedBy: HK0PR01CA0049.apcprd01.prod.exchangelabs.com (2603:1096:203:a6::13) To VE1PR04MB6638.eurprd04.prod.outlook.com (2603:10a6:803:119::15) MIME-Version: 1.0 X-MS-Exchange-MessageSentRepresentingType: 1 Received: from robin-OptiPlex-790.ap.freescale.net (119.31.174.66) by HK0PR01CA0049.apcprd01.prod.exchangelabs.com (2603:1096:203:a6::13) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256) id 15.20.4020.17 via Frontend Transport; Wed, 7 Apr 2021 07:16:17 +0000 X-MS-PublicTrafficType: Email X-MS-Office365-Filtering-Correlation-Id: 147cd492-ba3d-4d86-7df5-08d8f9950cd6 X-MS-TrafficTypeDiagnostic: VE1PR04MB6509: X-MS-Exchange-Transport-Forked: True X-Microsoft-Antispam-PRVS: X-MS-Oob-TLC-OOBClassifiers: OLM:6430; X-MS-Exchange-SenderADCheck: 1 X-Microsoft-Antispam: BCL:0; X-Microsoft-Antispam-Message-Info: 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 X-Forefront-Antispam-Report: CIP:255.255.255.255;CTRY:;LANG:en;SCL:1;SRV:;IPV:NLI;SFV:NSPM;H:VE1PR04MB6638.eurprd04.prod.outlook.com;PTR:;CAT:NONE;SFS:(4636009)(366004)(376002)(39860400002)(136003)(346002)(396003)(6486002)(6512007)(4326008)(52116002)(478600001)(5660300002)(6666004)(8936002)(66946007)(966005)(2616005)(956004)(26005)(8676002)(6506007)(38350700001)(36756003)(66476007)(66556008)(38100700001)(186003)(16526019)(2906002)(921005)(83380400001)(86362001)(7416002)(6636002)(316002);DIR:OUT;SFP:1101; X-MS-Exchange-AntiSpam-MessageData: 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 X-OriginatorOrg: nxp.com X-MS-Exchange-CrossTenant-Network-Message-Id: 147cd492-ba3d-4d86-7df5-08d8f9950cd6 X-MS-Exchange-CrossTenant-AuthSource: VE1PR04MB6638.eurprd04.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Internal X-MS-Exchange-CrossTenant-OriginalArrivalTime: 07 Apr 2021 07:16:23.5630 (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-CrossTenant-UserPrincipalName: DWNXsmSq1ockoUs34CkkKnY7AaIpXoH6+C2YuU0N7+Rb0ZKvar+h+KWNxoyrQom+Qe1f+qMcQv//wSutJqRbvA== X-MS-Exchange-Transport-CrossTenantHeadersStamped: VE1PR04MB6509 Precedence: bulk List-ID: X-Mailing-List: dmaengine@vger.kernel.org ERR009165 fixed on i.mx6ul/6ull/6sll. All other i.mx6/7 and i.mx8m/8mm still need this errata. Please refer to nxp official errata document from https://www.nxp.com/ . For removing workaround on those chips. Add new i.mx6ul type. Signed-off-by: Robin Gong Acked-by: Mark Brown --- drivers/spi/spi-imx.c | 47 +++++++++++++++++++++++++++++++++++++++++++---- 1 file changed, 43 insertions(+), 4 deletions(-) diff --git a/drivers/spi/spi-imx.c b/drivers/spi/spi-imx.c index cf235b9..d18ee25 100644 --- a/drivers/spi/spi-imx.c +++ b/drivers/spi/spi-imx.c @@ -59,6 +59,7 @@ enum spi_imx_devtype { IMX35_CSPI, /* CSPI on all i.mx except above */ IMX51_ECSPI, /* ECSPI on i.mx51 */ IMX53_ECSPI, /* ECSPI on i.mx53 and later */ + IMX6UL_ECSPI, /* ERR009165 fix from i.mx6ul */ }; struct spi_imx_data; @@ -78,6 +79,11 @@ struct spi_imx_devtype_data { bool has_slavemode; unsigned int fifo_size; bool dynamic_burst; + /* + * ERR009165 fixed or not: + * https://www.nxp.com/docs/en/errata/IMX6DQCE.pdf + */ + bool tx_glitch_fixed; enum spi_imx_devtype devtype; }; @@ -134,6 +140,11 @@ static inline int is_imx51_ecspi(struct spi_imx_data *d) return d->devtype_data->devtype == IMX51_ECSPI; } +static inline int is_imx6ul_ecspi(struct spi_imx_data *d) +{ + return d->devtype_data->devtype == IMX6UL_ECSPI; +} + static inline int is_imx53_ecspi(struct spi_imx_data *d) { return d->devtype_data->devtype == IMX53_ECSPI; @@ -593,8 +604,14 @@ static int mx51_ecspi_prepare_transfer(struct spi_imx_data *spi_imx, ctrl |= mx51_ecspi_clkdiv(spi_imx, t->speed_hz, &clk); spi_imx->spi_bus_clk = clk; - /* ERR009165: work in XHC mode as PIO */ - ctrl &= ~MX51_ECSPI_CTRL_SMC; + /* + * ERR009165: work in XHC mode instead of SMC as PIO on the chips + * before i.mx6ul. + */ + if (spi_imx->usedma && spi_imx->devtype_data->tx_glitch_fixed) + ctrl |= MX51_ECSPI_CTRL_SMC; + else + ctrl &= ~MX51_ECSPI_CTRL_SMC; writel(ctrl, spi_imx->base + MX51_ECSPI_CTRL); @@ -620,12 +637,16 @@ static int mx51_ecspi_prepare_transfer(struct spi_imx_data *spi_imx, static void mx51_setup_wml(struct spi_imx_data *spi_imx) { + u32 tx_wml = 0; + + if (spi_imx->devtype_data->tx_glitch_fixed) + tx_wml = spi_imx->wml; /* * Configure the DMA register: setup the watermark * and enable DMA request. */ writel(MX51_ECSPI_DMA_RX_WML(spi_imx->wml - 1) | - MX51_ECSPI_DMA_TX_WML(0) | + MX51_ECSPI_DMA_TX_WML(tx_wml) | MX51_ECSPI_DMA_RXT_WML(spi_imx->wml) | MX51_ECSPI_DMA_TEDEN | MX51_ECSPI_DMA_RXDEN | MX51_ECSPI_DMA_RXTDEN, spi_imx->base + MX51_ECSPI_DMA); @@ -1019,6 +1040,23 @@ static struct spi_imx_devtype_data imx53_ecspi_devtype_data = { .devtype = IMX53_ECSPI, }; +static struct spi_imx_devtype_data imx6ul_ecspi_devtype_data = { + .intctrl = mx51_ecspi_intctrl, + .prepare_message = mx51_ecspi_prepare_message, + .prepare_transfer = mx51_ecspi_prepare_transfer, + .trigger = mx51_ecspi_trigger, + .rx_available = mx51_ecspi_rx_available, + .reset = mx51_ecspi_reset, + .setup_wml = mx51_setup_wml, + .fifo_size = 64, + .has_dmamode = true, + .dynamic_burst = true, + .has_slavemode = true, + .tx_glitch_fixed = true, + .disable = mx51_ecspi_disable, + .devtype = IMX6UL_ECSPI, +}; + static const struct of_device_id spi_imx_dt_ids[] = { { .compatible = "fsl,imx1-cspi", .data = &imx1_cspi_devtype_data, }, { .compatible = "fsl,imx21-cspi", .data = &imx21_cspi_devtype_data, }, @@ -1027,6 +1065,7 @@ static const struct of_device_id spi_imx_dt_ids[] = { { .compatible = "fsl,imx35-cspi", .data = &imx35_cspi_devtype_data, }, { .compatible = "fsl,imx51-ecspi", .data = &imx51_ecspi_devtype_data, }, { .compatible = "fsl,imx53-ecspi", .data = &imx53_ecspi_devtype_data, }, + { .compatible = "fsl,imx6ul-ecspi", .data = &imx6ul_ecspi_devtype_data, }, { /* sentinel */ } }; MODULE_DEVICE_TABLE(of, spi_imx_dt_ids); @@ -1604,7 +1643,7 @@ static int spi_imx_probe(struct platform_device *pdev) spi_imx->bitbang.master->mode_bits = SPI_CPOL | SPI_CPHA | SPI_CS_HIGH \ | SPI_NO_CS; if (is_imx35_cspi(spi_imx) || is_imx51_ecspi(spi_imx) || - is_imx53_ecspi(spi_imx)) + is_imx53_ecspi(spi_imx) || is_imx6ul_ecspi(spi_imx)) spi_imx->bitbang.master->mode_bits |= SPI_LOOP | SPI_READY; spi_imx->spi_drctl = spi_drctl;