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Fri, 24 Jul 2020 10:37:50 +0000 From: Robin Gong To: mark.rutland@arm.com, broonie@kernel.org, robh+dt@kernel.org, catalin.marinas@arm.com, vkoul@kernel.org, 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 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 v11 07/12] spi: imx: fix ERR009165 Date: Sat, 25 Jul 2020 02:51:20 +0800 Message-Id: <1595616685-9987-8-git-send-email-yibin.gong@nxp.com> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1595616685-9987-1-git-send-email-yibin.gong@nxp.com> References: <1595616685-9987-1-git-send-email-yibin.gong@nxp.com> Content-Type: text/plain X-ClientProxiedBy: SG2PR02CA0046.apcprd02.prod.outlook.com (2603:1096:3:18::34) 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 (119.31.174.67) by SG2PR02CA0046.apcprd02.prod.outlook.com (2603:1096:3:18::34) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256) id 15.20.3216.20 via Frontend Transport; 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X-MS-Exchange-AntiSpam-MessageData: NrgwD4i+eN4BtJqd/ISYMoQc/nYD6tJF0wrd78E5+Qr1vtsIL1RNJSLTXiU0qtctIY8PzbHJDdZ8alVoSSczkBSpllOlXtQ/IthI9L/WQAj7MVJVANDMiWgJEUO26KHETNgYA7dbmpaSrw77NUoTrDEqGGHJ6E1gN4nDeRDASLpG5Flm1Z755MAPoSsSz4eXJRO+UVs2qeai1ALDU1WuX/Fr1EXKtTYlE4rZmViiLAxbOfLe5hPqiuAOs0k/sFSpa30A3eOxMgO8mKmNVCGZzLSbQVZDsAWqu2fGmdqXip/MTSLn9QlJDsQbeuDOC4kwqhrENXcOjiTZs8Kf1OvIMYiKicG5Xj+NcmNcbUNCHBoQiE2r5Zj4pQT2rLEY3jPMzRp/1ZB00MU8mZCfLXUbxIIhJyo2ExZ7OYLuv43Frk4sz0Rl3o6iPG6KP9IyRfs5IXqd+9baTNGGKCKjiK83NHqTbmsWdLeESJSMcscSnfE= X-OriginatorOrg: nxp.com X-MS-Exchange-CrossTenant-Network-Message-Id: 2d18e24b-59c3-4515-252a-08d82fbd9d10 X-MS-Exchange-CrossTenant-AuthSource: VE1PR04MB6638.eurprd04.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Internal X-MS-Exchange-CrossTenant-OriginalArrivalTime: 24 Jul 2020 10:37:50.5179 (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: ISIjb4YRrJER3zmSgH9Q5QUlHudJwH7KFsvp0P5+vPawZHsZlKmZNkWsyzRj6NZy/KJsZlL6AP/4oRjjcI78bg== X-MS-Exchange-Transport-CrossTenantHeadersStamped: VI1PR0402MB3710 Sender: dmaengine-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: dmaengine@vger.kernel.org Change to XCH mode even in dma mode, please refer to the below errata: https://www.nxp.com/docs/en/errata/IMX6DQCE.pdf Signed-off-by: Robin Gong Acked-by: Mark Brown --- drivers/spi/spi-imx.c | 10 +++------- 1 file changed, 3 insertions(+), 7 deletions(-) diff --git a/drivers/spi/spi-imx.c b/drivers/spi/spi-imx.c index 2b8d339..873be5e 100644 --- a/drivers/spi/spi-imx.c +++ b/drivers/spi/spi-imx.c @@ -591,8 +591,8 @@ 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; - if (spi_imx->usedma) - ctrl |= MX51_ECSPI_CTRL_SMC; + /* ERR009165: work in XHC mode as PIO */ + ctrl &= ~MX51_ECSPI_CTRL_SMC; writel(ctrl, spi_imx->base + MX51_ECSPI_CTRL); @@ -623,7 +623,7 @@ static void mx51_setup_wml(struct spi_imx_data *spi_imx) * and enable DMA request. */ writel(MX51_ECSPI_DMA_RX_WML(spi_imx->wml - 1) | - MX51_ECSPI_DMA_TX_WML(spi_imx->wml) | + MX51_ECSPI_DMA_TX_WML(0) | 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); @@ -1273,10 +1273,6 @@ static int spi_imx_sdma_init(struct device *dev, struct spi_imx_data *spi_imx, { int ret; - /* use pio mode for i.mx6dl chip TKT238285 */ - if (of_machine_is_compatible("fsl,imx6dl")) - return 0; - spi_imx->wml = spi_imx->devtype_data->fifo_size / 2; /* Prepare for TX DMA: */ -- 2.7.4