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=-13.8 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 04969C11F67 for ; Tue, 13 Jul 2021 09:30:24 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id DC0A560720 for ; Tue, 13 Jul 2021 09:30:23 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S235277AbhGMJdM (ORCPT ); Tue, 13 Jul 2021 05:33:12 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:60306 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S235289AbhGMJdJ (ORCPT ); Tue, 13 Jul 2021 05:33:09 -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 5F67AC0613E9 for ; Tue, 13 Jul 2021 02:30:19 -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 1m3Ejr-0000rp-Gk; Tue, 13 Jul 2021 11:30:03 +0200 Message-ID: <695d47eb5dad9292d8f87e69ad1bccaa2e132a66.camel@pengutronix.de> Subject: Re: [PATCH v14 08/12] spi: imx: remove ERR009165 workaround on i.mx6ul 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" , Clark Wang Cc: "devicetree@vger.kernel.org" , "linux-kernel@vger.kernel.org" , "linux-spi@vger.kernel.org" , dl-linux-imx , "kernel@pengutronix.de" , "dmaengine@vger.kernel.org" , "linux-arm-kernel@lists.infradead.org" Date: Tue, 13 Jul 2021 11:30:01 +0200 In-Reply-To: References: <1617809456-17693-1-git-send-email-yibin.gong@nxp.com> <1617809456-17693-9-git-send-email-yibin.gong@nxp.com> <7ca4554c58908618705768e01239409d19f83d17.camel@pengutronix.de> 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 Dienstag, dem 13.07.2021 um 09:12 +0000 schrieb Robin Gong: > On 12/07/21 17:31 Lucas Stach wrote: > > Am Montag, dem 12.07.2021 um 03:48 +0000 schrieb Robin Gong: > > > On 09/07/21 17:42 Lucas Stach wrote: > > > > Am Mittwoch, dem 07.04.2021 um 23:30 +0800 schrieb Robin Gong: > > > > > ERR009165 fixed on i.mx6ul/6ull/6sll. All other i.mx6/7 and > > > > > i.mx8m/8mm still need this errata. Please refer to nxp official > > > > > errata document from > > > > https://eur01.safelinks.protection.outlook.com/?url=https%3A%2F%2Fww > > > > w.n > > xp.com%2F&data=04%7C01%7Cyibin.gong%40nxp.com%7C48156bc93d > > > > > > c84ac26e9d08d942bdc0ac%7C686ea1d3bc2b4c6fa92cd99c5c301635%7C0% > > > > > > 7C1%7C637614205017900475%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4 > > > > > > wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C1000&a > > > > > > mp;sdata=keYQubzt1jWrKhaxXr40RL41vzFuIn7x1Sasa3p%2F9Xo%3D&res > > > > erved=0 . > > > > > > > > > > For removing workaround on those chips. Add new i.mx6ul type. > > > > > > > > > > Signed-off-by: Robin Gong > > > > > Acked-by: Mark Brown > > > > > --- > > > > > drivers/spi/spi-imx.c | 47 > > > > > +++++++++++++++++++++++++++++++++++++++++++---- > > > > > 1 file changed, 43 insertions(+), 4 deletions(-) > > > > > > > > > > diff --git a/drivers/spi/spi-imx.c b/drivers/spi/spi-imx.c index > > > > > cf235b9..d18ee25 100644 > > > > > --- a/drivers/spi/spi-imx.c > > > > > +++ b/drivers/spi/spi-imx.c > > > > > @@ -59,6 +59,7 @@ enum spi_imx_devtype { > > > > > IMX35_CSPI, /* CSPI on all i.mx except above */ > > > > > IMX51_ECSPI, /* ECSPI on i.mx51 */ > > > > > IMX53_ECSPI, /* ECSPI on i.mx53 and later */ > > > > > + IMX6UL_ECSPI, /* ERR009165 fix from i.mx6ul */ > > > > > > > > This patch could be a lot smaller if you didn't introduce a new > > > > devtype. You could just use the IMX51_ECSPI in > > > > imx6ul_ecspi_devtype_data, as all you care about as a relevant > > > > difference is the tx_glitch_fixed property, which isn't tied to the devtype. > > > I knew tx_glitch_fixed was enough but I still prefer to add new > > > 'IMX6UL_ECSPI' because we can clearly choose the right IP which has > > > fix the issue while legacy IMX51 if it's not fixed by dts. > > > > > Sorry, I don't follow this reasoning. You are not using the new IMX6UL_ECSPI > > devtype in any way in this patch, other than a single location, where you just > > handle it the same as the IMX51_ECSPI devtype. > Okay, will reuse IMX51_ECSPI as devtype, but will still keep "fsl,imx6ul-ecspi". > That's exactly what I meant: have a "fsl,imx6ul-ecspi" compatible with it's own imx6ul_ecspi_devtype_data, but reuse the IMX51_ECSPI devtype. Glad we are on the same page now. Regards, Lucas