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=-0.8 required=3.0 tests=DKIM_SIGNED,DKIM_VALID, DKIM_VALID_AU,FREEMAIL_FORGED_FROMDOMAIN,FREEMAIL_FROM, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_PASS,URIBL_BLOCKED autolearn=ham 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 563F4C4360F for ; Wed, 3 Apr 2019 17:13:57 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id DE9A220700 for ; Wed, 3 Apr 2019 17:13:56 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b="rhnN5Xpe" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726419AbfDCRNz (ORCPT ); Wed, 3 Apr 2019 13:13:55 -0400 Received: from mail-ed1-f43.google.com ([209.85.208.43]:43767 "EHLO mail-ed1-f43.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726097AbfDCRNz (ORCPT ); Wed, 3 Apr 2019 13:13:55 -0400 Received: by mail-ed1-f43.google.com with SMTP id d26so15596943ede.10; Wed, 03 Apr 2019 10:13:53 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=from:subject:to:cc:references:message-id:date:user-agent :mime-version:in-reply-to:content-transfer-encoding:content-language; bh=0+WratJVKBqjwoVboZcV3B8hBCKWgpk6T5kZ4RRKM/Q=; b=rhnN5XpefR/Nnz1py0JbR1vG6YnVZDIlb6BX45bF2K2IWoRON7Uq69W41OiqKyRDb3 yJrPIVfIQGUHV1uaXMMNFUutW1bIxpKDrMe8r2JfNkqmRhBfyulMLbdweN0ZIsXCadKM BU9jdXDoxJiOrYOw0D+TlnCFnu+qXd6U+be/h/feUVxMWg/6Z1Pza+pKkoocpHbaejqh 232OXpMA2gEOq5MDdSWV4J6kXiPZDjhu4vCrbsA8TYTydhLD0SYYfXSiARjDYIsUQ8Wm 3JU+fu3YS3Ci2Sa4znUXBb37d3Qfzsf4f0yL9CKnM7P50KC8asX8dwV4qM7/N6jbD1y9 qUJA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:subject:to:cc:references:message-id:date :user-agent:mime-version:in-reply-to:content-transfer-encoding :content-language; bh=0+WratJVKBqjwoVboZcV3B8hBCKWgpk6T5kZ4RRKM/Q=; b=seUA4+bKEI0DweRba2z2FS+IrYoT80AgJX4tAt/M3NSFBeDi/Nk0f2e3xiEX3FebDJ r4zq7yTq8GYnQ7Cbe8b8S4tx2yUy/f3baZMSsbXVNtFsuQj04lBldr7PdznspA4MQKL6 28CTBj2g/kBgyiGY6WYvSl97d5P7hj+PlY9T/2CYRzYG3RRSuBq2DhSHI9GB9cn1EvJp OjWDuupbMKXWZ3XfusBKFk/okLP9dpi3ToWVTDDos8Tau+3tLSrJfraEGUql+3spPXtc WWgeaivNRowV61U8NrtDuwqvmn4cvI4dJQkDDtyZ4GlAgCEOl0mib3Ea1RuKhV8oidW/ 4DtA== X-Gm-Message-State: APjAAAXKRxmdE0wh34/c+9/qw4xvmkly18rlNa432wdvfSzf9C9LZuc7 U5qdoRW3XbfGgMfvc4a4XQU= X-Google-Smtp-Source: APXvYqz5IHQGhCq5sRBa7ozS/ZgzPN6fTcQr3S6y1VC8LlJMELhGEGKP7LKyyLCxB2spYT/Pr93xfA== X-Received: by 2002:a50:f4ee:: with SMTP id v43mr509082edm.25.1554311633091; Wed, 03 Apr 2019 10:13:53 -0700 (PDT) Received: from [192.168.1.10] ([95.174.107.249]) by smtp.gmail.com with ESMTPSA id a25sm5140614edc.55.2019.04.03.10.13.50 (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Wed, 03 Apr 2019 10:13:52 -0700 (PDT) From: Igor Plyatov Subject: Re: Issues with i.MX SPI DMA transfers To: Robin Gong Cc: =?UTF-8?Q?Uwe_Kleine-K=c3=b6nig?= , "linux-kernel@vger.kernel.org" , "linux-arm-kernel@lists.infradead.org" , "linux-spi@vger.kernel.org" , dl-linux-imx , Fabio Estevam , Pengutronix Kernel Team , Sascha Hauer , Shawn Guo , Mark Brown , "dmaengine@vger.kernel.org" , Vinod Koul , Dan Williams , Andy Duan , Han Xu , Clark Wang References: <08fcbd65-510f-84f8-d6d6-ff56aa9ca9ad@gmail.com> <20190328065247.uz73lap7ljf5q3tb@pengutronix.de> <95df9334-3d0c-7d13-e431-5a4aa2b9907e@gmail.com> <197990d4-b1e2-8db9-0cb7-87b860f23bd7@gmail.com> Message-ID: <7739e283-799c-7dac-2bcd-fbf17fd4fb93@gmail.com> Date: Wed, 3 Apr 2019 20:13:49 +0300 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:60.0) Gecko/20100101 Thunderbird/60.6.1 MIME-Version: 1.0 In-Reply-To: Content-Type: text/plain; charset=utf-8; format=flowed Content-Transfer-Encoding: 7bit Content-Language: en-US Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Dear Robin, I have made additional tests on another exemplar of board with absolutely same hardware. The spidev_test failed on eCSPI2 and eCSPI5 interfaces, but works successfully on eCSPI1 interface. So, it looks, issue does not correspond to fixed interface number. This is generic issue of i.MX6 SOC and hardly broken eCSPI interface number can change from SOC chip to chip. Do you have any idea how to improve situation with eCSPI in DMA mode? Best wishes. -- Igor Plyatov