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Tue, 23 Apr 2019 13:51:05 +0000 Received: from VI1PR04MB4543.eurprd04.prod.outlook.com ([fe80::5d07:911b:18e1:1525]) by VI1PR04MB4543.eurprd04.prod.outlook.com ([fe80::5d07:911b:18e1:1525%4]) with mapi id 15.20.1813.017; Tue, 23 Apr 2019 13:51:05 +0000 From: Robin Gong To: "broonie@kernel.org" , "shawnguo@kernel.org" , "s.hauer@pengutronix.de" , "festevam@gmail.com" , "robh+dt@kernel.org" , "mark.rutland@arm.com" , "u.kleine-koenig@pengutronix.de" , "plyatov@gmail.com" , "sean.nyekjaer@prevas.dk" CC: dl-linux-imx , "linux-spi@vger.kernel.org" , "linux-arm-kernel@lists.infradead.org" , "linux-kernel@vger.kernel.org" , "dmaengine@vger.kernel.org" , "devicetree@vger.kernel.org" , "kernel@pengutronix.de" Subject: [PATCH v1 06/15] spi: imx: fix ERR009165 Thread-Topic: [PATCH v1 06/15] spi: imx: fix ERR009165 Thread-Index: AQHU+duY3N9cIuyM1kayzyI4cQvfJA== Date: Tue, 23 Apr 2019 13:51:05 +0000 Message-ID: <1556027045-5269-7-git-send-email-yibin.gong@nxp.com> References: <1556027045-5269-1-git-send-email-yibin.gong@nxp.com> In-Reply-To: <1556027045-5269-1-git-send-email-yibin.gong@nxp.com> Accept-Language: en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: x-mailer: git-send-email 2.7.4 x-clientproxiedby: HK2PR04CA0044.apcprd04.prod.outlook.com (2603:1096:202:14::12) To VI1PR04MB4543.eurprd04.prod.outlook.com (2603:10a6:803:6d::26) authentication-results: spf=none (sender IP is ) smtp.mailfrom=yibin.gong@nxp.com; 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received-spf: None (protection.outlook.com: nxp.com does not designate permitted sender hosts) x-ms-exchange-senderadcheck: 1 x-microsoft-antispam-message-info: mqhjHg3Svb/iYa1sV+2nNADYiOKUfd6Ji3wepVnyb936VEXyOn6awtnK3fvEf5lkK/4P3Xi767w4eUq/gwbr0yl4hpU5uLeo0czzaRY/YfkLTH51hzmD9M6TfW7p3BdAJihPXH96YCqxblZTBT4X73WffTKL/4ZRXFv/SuQ9IkdduT0mUA4NMzjsIMeBRM++Y8PyQGeHEJv5MmZv0Xf87//aHlFLeRakPp/4c0TXirfSdLjGjvzCymTu1vi6z1uGpMV3qkdR8UM7d0mgdjS+c2EauqGSxsV8mnWQ9zIwQUSH9sTWZBEVmP3nLZi7Qr8Ke3KD4h1w4FMdViCfmxH94ijzxDSDkHqhSnUvjxnvlu5HB7UnPfyNxLsP9esKq+Epf+KRwG3VEVsqqkpfks30lvn2xMdOyd/BgA3oNrsw/6Y= MIME-Version: 1.0 X-OriginatorOrg: nxp.com X-MS-Exchange-CrossTenant-Network-Message-Id: 152b1fb3-2674-400c-d5bb-08d6c7f2bb1e X-MS-Exchange-CrossTenant-originalarrivaltime: 23 Apr 2019 13:51:05.8179 (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: VI1PR04MB5901 Sender: linux-spi-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-spi@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP 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 --- drivers/spi/spi-imx.c | 11 +++++------ 1 file changed, 5 insertions(+), 6 deletions(-) diff --git a/drivers/spi/spi-imx.c b/drivers/spi/spi-imx.c index 09c9a1e..eb56eac 100644 --- a/drivers/spi/spi-imx.c +++ b/drivers/spi/spi-imx.c @@ -585,8 +585,9 @@ 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 */ if (spi_imx->usedma) - ctrl |= MX51_ECSPI_CTRL_SMC; + ctrl &= ~MX51_ECSPI_CTRL_SMC; writel(ctrl, spi_imx->base + MX51_ECSPI_CTRL); @@ -612,12 +613,14 @@ 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; + /* * 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(spi_imx->wml) | + 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); @@ -1265,10 +1268,6 @@ 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: */