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Fri, 5 Jun 2020 13:33:12 +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, linux-imx@nxp.com, dmaengine@vger.kernel.org Subject: [PATCH v9 08/14] spi: imx: fix ERR009165 Date: Sat, 6 Jun 2020 05:32:29 +0800 Message-Id: <1591392755-19136-9-git-send-email-yibin.gong@nxp.com> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1591392755-19136-1-git-send-email-yibin.gong@nxp.com> References: <1591392755-19136-1-git-send-email-yibin.gong@nxp.com> X-ClientProxiedBy: SG2PR02CA0048.apcprd02.prod.outlook.com (2603:1096:3:18::36) 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 SG2PR02CA0048.apcprd02.prod.outlook.com (2603:1096:3:18::36) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256) id 15.20.3066.20 via Frontend Transport; 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X-MS-Exchange-AntiSpam-MessageData: qGAtHUF7emCDF/M1ljG2lqjrdMYjhOiG4GeDU00d0m2oceMaqsbmtY88soC0SoDbKWW9E/NNAkiNQhRXFwV9NXvGJ1IodFaadBjprNdTkhpVpv10dxDneZMgsKoLWNOvkwdSjgHRBdnPIBigbk6iPcUClbe9bZWqeoF2HA7JQTZ1ERpi48cu5LnxKzWvUiMidj6yAEfQ8Txal96vHzNDRoRKiypIaIZiQSPB1fqjQ8jmTWSoWmjMMYGjQtQyDKNRGqogu//ueveMyQZjJkymoIg4oD2q2FG809KZjPx/Lxkqpdhwfh6gDuT2ocYXoPl4++6TpzafwpE0KvdWBWi0IC5WIyiHu/52m088L1edbk5kQOSgj1WEAqw17ZO0hTwvPVHYOFsXr35DWGG+NKyVpVZN9f7pjCjDOOJbyoaokH1VhdJdnTD5EutTpqUoShgsTzHAsmsiQxIHbH57JzYEZMXQsT0J1orkytGeJsp2gqQ= X-OriginatorOrg: nxp.com X-MS-Exchange-CrossTenant-Network-Message-Id: 5111e0d8-6d77-4578-bb00-08d80954fe37 X-MS-Exchange-CrossTenant-OriginalArrivalTime: 05 Jun 2020 13:33:12.2201 (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: vSZyzLGrpTMSUlpn7kjvHr1JDBGHfqfjljB1tDTzbtlCj0qM3OC61xG+I/Dfu5VlZeVMEZ7ygsROqC5lrytGuQ== X-MS-Exchange-Transport-CrossTenantHeadersStamped: VE1PR04MB6702 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 c51cd3a..f82d63f 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: */