From mboxrd@z Thu Jan 1 00:00:00 1970 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, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS 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 11018C07E9C for ; Fri, 9 Jul 2021 09:35:52 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id DCA8861107 for ; Fri, 9 Jul 2021 09:35:51 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231921AbhGIJie (ORCPT ); Fri, 9 Jul 2021 05:38:34 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:49646 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231772AbhGIJic (ORCPT ); Fri, 9 Jul 2021 05:38:32 -0400 Received: from metis.ext.pengutronix.de (metis.ext.pengutronix.de [IPv6:2001:67c:670:201:290:27ff:fe1d:cc33]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 8A1F7C0613DD for ; Fri, 9 Jul 2021 02:35:48 -0700 (PDT) Received: from gallifrey.ext.pengutronix.de ([2001:67c:670:201:5054:ff:fe8d:eefb] helo=[IPv6:::1]) by metis.ext.pengutronix.de with esmtps (TLS1.3:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.92) (envelope-from ) id 1m1mv3-0007h4-JP; Fri, 09 Jul 2021 11:35:37 +0200 Message-ID: <6cacef63be4c6335b8bfa26043c3f787c9affd41.camel@pengutronix.de> Subject: Re: [PATCH v14 07/12] spi: imx: fix ERR009165 From: Lucas Stach To: Robin Gong , 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: devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-spi@vger.kernel.org, linux-imx@nxp.com, kernel@pengutronix.de, dmaengine@vger.kernel.org, linux-arm-kernel@lists.infradead.org Date: Fri, 09 Jul 2021 11:35:35 +0200 In-Reply-To: <1617809456-17693-8-git-send-email-yibin.gong@nxp.com> References: <1617809456-17693-1-git-send-email-yibin.gong@nxp.com> <1617809456-17693-8-git-send-email-yibin.gong@nxp.com> Content-Type: text/plain; charset="UTF-8" User-Agent: Evolution 3.40.1 (3.40.1-1.fc34) MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-SA-Exim-Connect-IP: 2001:67c:670:201:5054:ff:fe8d:eefb X-SA-Exim-Mail-From: l.stach@pengutronix.de X-SA-Exim-Scanned: No (on metis.ext.pengutronix.de); SAEximRunCond expanded to false X-PTX-Original-Recipient: linux-kernel@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Am Mittwoch, dem 07.04.2021 um 23:30 +0800 schrieb Robin Gong: > 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 Reviewed-by: Lucas Stach > --- > 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 4fe767a..cf235b9 100644 > --- a/drivers/spi/spi-imx.c > +++ b/drivers/spi/spi-imx.c > @@ -593,8 +593,8 @@ 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); > > @@ -625,7 +625,7 @@ 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); > @@ -1234,10 +1234,6 @@ 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: */