From patchwork Mon Jun 10 08:17:38 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Robin Gong X-Patchwork-Id: 10984235 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id DF3F413AD for ; Mon, 10 Jun 2019 08:16:24 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id CF68428397 for ; Mon, 10 Jun 2019 08:16:24 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id C287828643; Mon, 10 Jun 2019 08:16:24 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-7.9 required=2.0 tests=BAYES_00,MAILING_LIST_MULTI, RCVD_IN_DNSWL_HI autolearn=ham version=3.3.1 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 35ED728843 for ; Mon, 10 Jun 2019 08:16:24 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2387932AbfFJIQX (ORCPT ); Mon, 10 Jun 2019 04:16:23 -0400 Received: from inva020.nxp.com ([92.121.34.13]:36684 "EHLO inva020.nxp.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S2387824AbfFJIQX (ORCPT ); Mon, 10 Jun 2019 04:16:23 -0400 Received: from inva020.nxp.com (localhost [127.0.0.1]) by inva020.eu-rdc02.nxp.com (Postfix) with ESMTP id 4C4C11A07AF; Mon, 10 Jun 2019 10:16:20 +0200 (CEST) Received: from invc005.ap-rdc01.nxp.com (invc005.ap-rdc01.nxp.com [165.114.16.14]) by inva020.eu-rdc02.nxp.com (Postfix) with ESMTP id 0FC271A07AC; Mon, 10 Jun 2019 10:16:12 +0200 (CEST) Received: from localhost.localdomain (mega.ap.freescale.net [10.192.208.232]) by invc005.ap-rdc01.nxp.com (Postfix) with ESMTP id 0DAE4402FB; Mon, 10 Jun 2019 16:16:01 +0800 (SGT) From: yibin.gong@nxp.com To: robh+dt@kernel.org, mark.rutland@arm.com, shawnguo@kernel.org, s.hauer@pengutronix.de, kernel@pengutronix.de, broonie@kernel.org, festevam@gmail.com, vkoul@kernel.org, dan.j.williams@intel.com, u.kleine-koenig@pengutronix.de, catalin.marinas@arm.com, l.stach@pengutronix.de, will.deacon@arm.com Cc: linux-spi@vger.kernel.org, linux-imx@nxp.com, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, dmaengine@vger.kernel.org, devicetree@vger.kernel.org Subject: [PATCH v5 00/15] add ecspi ERR009165 for i.mx6/7 soc family Date: Mon, 10 Jun 2019 16:17:38 +0800 Message-Id: <20190610081753.11422-1-yibin.gong@nxp.com> X-Mailer: git-send-email 2.17.1 X-Virus-Scanned: ClamAV using ClamSMTP Sender: dmaengine-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: dmaengine@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP From: Robin Gong There is ecspi ERR009165 on i.mx6/7 soc family, which cause FIFO transfer to be send twice in DMA mode. Please get more information from: https://www.nxp.com/docs/en/errata/IMX6DQCE.pdf. The workaround is adding new sdma ram script which works in XCH mode as PIO inside sdma instead of SMC mode, meanwhile, 'TX_THRESHOLD' should be 0. The issue should be exist on all legacy i.mx6/7 soc family before i.mx6ul. NXP fix this design issue from i.mx6ul, so newer chips including i.mx6ul/ 6ull/6sll do not need this workaroud anymore. All other i.mx6/7/8 chips still need this workaroud. This patch set add new 'fsl,imx6ul-ecspi' for ecspi driver and 'ecspi_fixed' in sdma driver to choose if need errata or not. The first two reverted patches should be the same issue, though, it seems 'fixed' by changing to other shp script. Hope Sean or Sascha could have the chance to test this patch set if could fix their issues. Besides, enable sdma support for i.mx8mm/8mq and fix ecspi1 not work on i.mx8mm because the event id is zero. PS: Please get sdma firmware from below linux-firmware and copy it to your local rootfs /lib/firmware/imx/sdma. https://git.kernel.org/pub/scm/linux/kernel/git/firmware/linux-firmware.git/tree/imx/sdma v2: 1.Add commit log for reverted patches. 2.Add comment for 'ecspi_fixed' in sdma driver. 3.Add 'fsl,imx6sll-ecspi' compatible instead of 'fsl,imx6ul-ecspi' rather than remove. v3: 1.Confirm with design team make sure ERR009165 fixed on i.mx6ul/i.mx6ull /i.mx6sll, not fixed on i.mx8m/8mm and other i.mx6/7 legacy chips. Correct dts related dts patch in v2. 2.Clean eratta information in binding doc and new 'tx_glitch_fixed' flag in spi-imx driver to state ERR009165 fixed or not. 3.Enlarge burst size to fifo size for tx since tx_wml set to 0 in the errata workaroud, thus improve performance as possible. v4: 1.add Ack tag from Mark and Vinod 2. remove checking 'event_id1' zero as 'event_id0'. v5: 1.Add another patch for compatible with the current uart driver which using rom script, so both uart ram script and rom script supported in latest firmware, by default uart rom script used. UART driver will be broken without this patch. Latest sdma firmware has been already updated in linux-firmware. Robin Gong (15): Revert "ARM: dts: imx6q: Use correct SDMA script for SPI5 core" Revert "ARM: dts: imx6: Use correct SDMA script for SPI cores" Revert "dmaengine: imx-sdma: refine to load context only once" dmaengine: imx-sdma: remove dupilicated sdma_load_context dmaengine: imx-sdma: add mcu_2_ecspi script spi: imx: fix ERR009165 spi: imx: remove ERR009165 workaround on i.mx6ul spi: imx: add new i.mx6ul compatible name in binding doc dmaengine: imx-sdma: remove ERR009165 on i.mx6ul dma: imx-sdma: add i.mx6ul/6sx compatible name dmaengine: imx-sdma: fix ecspi1 rx dma not work on i.mx8mm ARM: dts: imx6ul: add dma support on ecspi ARM: dts: imx6sll: correct sdma compatible arm64: defconfig: Enable SDMA on i.mx8mq/8mm dmaengine: imx-sdma: add uart rom script .../devicetree/bindings/dma/fsl-imx-sdma.txt | 2 + .../devicetree/bindings/spi/fsl-imx-cspi.txt | 1 + arch/arm/boot/dts/imx6q.dtsi | 2 +- arch/arm/boot/dts/imx6qdl.dtsi | 8 +- arch/arm/boot/dts/imx6sll.dtsi | 2 +- arch/arm/boot/dts/imx6ul.dtsi | 8 ++ arch/arm64/configs/defconfig | 3 + drivers/dma/imx-sdma.c | 88 ++++++++++++++++------ drivers/spi/spi-imx.c | 61 ++++++++++++--- include/linux/platform_data/dma-imx-sdma.h | 11 ++- 10 files changed, 145 insertions(+), 41 deletions(-)