From: Igor Plyatov <plyatov@gmail.com>
To: "Robin Gong" <yibin.gong@nxp.com>,
"Uwe Kleine-König" <u.kleine-koenig@pengutronix.de>
Cc: "linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
"linux-arm-kernel@lists.infradead.org"
<linux-arm-kernel@lists.infradead.org>,
"linux-spi@vger.kernel.org" <linux-spi@vger.kernel.org>,
dl-linux-imx <linux-imx@nxp.com>,
Fabio Estevam <festevam@gmail.com>,
Pengutronix Kernel Team <kernel@pengutronix.de>,
Sascha Hauer <s.hauer@pengutronix.de>,
Shawn Guo <shawnguo@kernel.org>, Mark Brown <broonie@kernel.org>,
"dmaengine@vger.kernel.org" <dmaengine@vger.kernel.org>,
Vinod Koul <vkoul@kernel.org>,
Dan Williams <dan.j.williams@intel.com>,
Andy Duan <fugang.duan@nxp.com>, Han Xu <han.xu@nxp.com>,
Clark Wang <xiaoning.wang@nxp.com>
Subject: Re: Issues with i.MX SPI DMA transfers
Date: Tue, 2 Apr 2019 10:20:27 +0300 [thread overview]
Message-ID: <95df9334-3d0c-7d13-e431-5a4aa2b9907e@gmail.com> (raw)
In-Reply-To: <VI1PR04MB4543B1708FA151EED0CB722A89550@VI1PR04MB4543.eurprd04.prod.outlook.com>
Dear Robin Gong,
>> Sorry...below another sdma patch(ad0d92d7ba6a) need to be reverted,
>> because spi driver may dynamically change burst length.
now I have reverted patch ad0d92d7ba6a.
Patches 0001-dma-engine-imx-sdma-add-mcu_2_ecspi-script.patch and
0002-spi-spi-imx-fix-ERR009165.patch are applied.
Kernel log show messages
[ 29.202639] imx-sdma 20ec000.sdma: loaded firmware 3.3
[ 29.238595] spi_imx 2008000.spi: probed
[ 29.242802] spi_imx 200c000.spi: probed
[ 29.245217] spi_imx 2018000.spi: probed
SPI DMA transfers still not work.
If I test 32 byte transfers, then they work fine. But 64 byte transfers
fails always and I see error messages
root@cr7:~# spidev_test -D /dev/spidev4.1 -s 1200000 -b 8 -S 64 -I 1 -l
spi mode: 0x20
bits per word: 8
max speed: 1200000 Hz (1200 KHz)
[ 423.686736] spi_master spi4: I/O Error in DMA RX
[ 423.691392] spidev spi4.1: SPI transfer failed: -110
[ 423.696382] spi_master spi4: failed to transfer one message from queue
can't send spi message: Connection timed out
Aborted (core dumped)
I suppose, transfers shorter then 64 bytes made with help of PIO.
Robin, is there any chance for you to find some time and look at this
issue again?
Best wishes.
--
Igor Plyatov
next prev parent reply other threads:[~2019-04-02 7:20 UTC|newest]
Thread overview: 23+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-03-27 17:40 Issues with i.MX SPI DMA transfers Igor Plyatov
2019-03-28 2:37 ` Aisheng Dong
2019-03-28 6:58 ` Igor Plyatov
2019-03-28 6:52 ` Uwe Kleine-König
2019-03-28 7:04 ` Igor Plyatov
2019-03-28 7:21 ` Robin Gong
2019-03-28 8:22 ` Uwe Kleine-König
2019-03-29 11:57 ` Igor Plyatov
2019-03-28 9:23 ` Robin Gong
2019-03-28 11:05 ` Igor Plyatov
2019-04-01 7:35 ` Robin Gong
2019-04-02 7:20 ` Igor Plyatov [this message]
2019-04-02 8:32 ` Robin Gong
2019-04-02 12:15 ` Igor Plyatov
2019-04-03 7:38 ` Robin Gong
2019-04-03 15:51 ` Igor Plyatov
2019-04-08 10:18 ` Robin Gong
2019-04-18 10:35 ` Marc Gonzalez
2019-04-03 17:13 ` Igor Plyatov
2019-04-09 3:26 ` Robin Gong
2019-04-18 1:19 ` Robin Gong
2019-04-18 6:30 ` Igor Plyatov
2019-04-18 8:05 ` Robin Gong
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