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Tue, 30 Jun 2020 05:25:06 +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 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 v10 07/12] spi: imx: fix ERR009165 Date: Tue, 30 Jun 2020 21:31:11 +0800 Message-Id: <1593523876-22387-8-git-send-email-yibin.gong@nxp.com> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1593523876-22387-1-git-send-email-yibin.gong@nxp.com> References: <1593523876-22387-1-git-send-email-yibin.gong@nxp.com> X-ClientProxiedBy: SG2PR06CA0132.apcprd06.prod.outlook.com (2603:1096:1:1d::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 SG2PR06CA0132.apcprd06.prod.outlook.com (2603:1096:1:1d::34) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256) id 15.20.3131.21 via Frontend Transport; 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X-MS-Exchange-AntiSpam-MessageData: jETdR/b5t+lrSn3urVeDLMtPN5yrJhM6TkCkzyAu3pZYOx5lMttqYnqPZ3ljuoNq6L4+tiRR0dCq2NV6JTCWLh34Zs9O+sfaPXsdr9IEYd/aaTZG7nmKbx7UcTRb+fyFkKRBNQUVHdlDU58KJKLt+t9DLzuVclzR6oSQYCEwBV8TjjIMBy6lkI54WghWaqQt86OHSxeUqevPM68C8p1QCBktZtMo4GIxkBpSdcRK7a7+vTmEES5ASr38BpLtCIufVQJaqX8WAtWqjT52dNhUDr4Bivnwx+a0Z/7y309q2M4GyCk6ZIOxMkHkyTs3yQqJL7v3jUuc7GN/YzQAAWs+PJKEVUMV73ttJflyzP+2bctrutcYi1h15Ip6AsCNEbTkmu4FkF+9Mz1Zfi7aw6eO0E3Nq+sDsl7QP4z61mVPQArWFhuKQGBlto1RbrRgUEZl9vSHgbERfIq+ypuSeVyglFHKRb9D30ysQY8f47kgr08= X-OriginatorOrg: nxp.com X-MS-Exchange-CrossTenant-Network-Message-Id: 840cd8b7-c5b0-48c9-7339-08d81cb5f2cf X-MS-Exchange-CrossTenant-AuthSource: VE1PR04MB6638.eurprd04.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Internal X-MS-Exchange-CrossTenant-OriginalArrivalTime: 30 Jun 2020 05:25:06.3723 (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: uVG/Q4oBP9u8RegbihvlB4/KcTdIi9D5Vr5N09V8Pc//8NkA/2luUwtuUg+TlNA6DRxEoNFZCgDhNCRZzvnPHA== X-MS-Exchange-Transport-CrossTenantHeadersStamped: VE1PR04MB6640 Sender: linux-spi-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-spi@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: */