[BUG] ls1046a: eDMA does not transfer data from I2C

[Leo Li]

> -----Original Message-----
> From: Sean Anderson <sean.anderson at seco.com>
> Sent: Monday, September 19, 2022 5:24 PM
> To: Oleksij Rempel <linux at rempel-privat.de>; Pengutronix Kernel Team
> <kernel at pengutronix.de>; linux-i2c at vger.kernel.org; linux-arm-kernel
> <linux-arm-kernel at lists.infradead.org>; Vinod Koul <vkoul at kernel.org>;
> dmaengine at vger.kernel.org
> Cc: Sumit Semwal <sumit.semwal at linaro.org>; Christian König
> <christian.koenig at amd.com>; Linux Kernel Mailing List <linux-
> kernel at vger.kernel.org>; linux-media at vger.kernel.org; dri-
> devel at lists.freedesktop.org; linaro-mm-sig at lists.linaro.org; Joy Zou
> <joy.zou at nxp.com>; Peng Ma <peng.ma at nxp.com>; Robin Gong
> <yibin.gong at nxp.com>; Shawn Guo <shawnguo at kernel.org>; Leo Li
> <leoyang.li at nxp.com>
> Subject: [BUG] ls1046a: eDMA does not transfer data from I2C
> 
> Hi all,
> 
> I discovered a bug in either imx_i2c or fsl-edma on the LS1046A where no
> data is read in i2c_imx_dma_read except for the last two bytes (which are
> not read using DMA). This is perhaps best illustrated with the following
> example:

What is the kernel tree/tag that you are testing with?

Regards,
Leo