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Wed, 27 Mar 2019 23:58:54 -0700 (PDT) Subject: Re: Issues with i.MX SPI DMA transfers To: Aisheng Dong , "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 , Robin Gong , Clark Wang References: <08fcbd65-510f-84f8-d6d6-ff56aa9ca9ad@gmail.com> From: Igor Plyatov Message-ID: Date: Thu, 28 Mar 2019 09:58:52 +0300 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:60.0) Gecko/20100101 Thunderbird/60.5.1 MIME-Version: 1.0 In-Reply-To: Content-Language: en-US X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20190327_235857_868980_B5E6C0A4 X-CRM114-Status: GOOD ( 11.76 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Transfer-Encoding: 7bit Content-Type: text/plain; charset="us-ascii"; Format="flowed" Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+infradead-linux-arm-kernel=archiver.kernel.org@lists.infradead.org Dear developers, I have update about these issues. 12 hours testing show very fast (some seconds) appearance of byte duplication at interface spi4 (alias for ecspi5), while interfaces spi0 (alias for ecspi1) and spi1 (alias for ecspi2) work flawless (at least without any other OS load). Looks like, ecspi5 has some different configuration in SPI or SDMA drivers or bug in SDMA script. Any ideas? Best wishes. -- Igor Plyatov _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel