Hi Krzysztof, I am sorry, It is my mistake to forget about VF50 used EDMA IP with little endian. The Register(CHCFG0 - CHCFG15) of our platform designed as follows: *-------------------------------------------------------------------------------* | Offset | Big endian Register| Little endian Register| |---------------------|--------------------------|-----------------------------| | 0x0 | CHCFG0 | CHCFG3 | |---------------------|--------------------------|-----------------------------| | 0x1 | CHCFG1 | CHCFG2 | |---------------------|--------------------------|-----------------------------| | 0x2 | CHCFG2 | CHCFG1 | |---------------------|--------------------------|-----------------------------| | 0x3 | CHCFG3 | CHCFG0 | |---------------------|--------------------------|-----------------------------| | ... | ...... | ...... | |---------------------|--------------------------|-----------------------------| | 0xC | CHCFG12 | CHCFG15 | |---------------------|--------------------------|-----------------------------| | 0xD | CHCFG13 | CHCFG14 | |---------------------|--------------------------|-----------------------------| | 0xE | CHCFG14 | CHCFG13 | |---------------------|--------------------------|-----------------------------| | 0xF | CHCFG15 | CHCFG12 | *-------------------------------------------------------------------------------* So we need this patch, I make some changes,Please help me to test attatchment on VF50 board, Thanks. Best Regards, Peng >-----Original Message----- >From: Krzysztof Kozłowski <k.kozlowski.k@xxxxxxxxx> >Sent: 2019年7月2日 20:13 >To: Peng Ma <peng.ma@xxxxxxx>; Vinod Koul <vkoul@xxxxxxxxxx>; >dmaengine@xxxxxxxxxxxxxxx; linux-kernel@xxxxxxxxxxxxxxx >Subject: [EXT] [BUG BISECT] Net boot fails on VF50 after "dmaengine: >fsl-edma: support little endian for edma driver" > >Caution: EXT Email > >Hi, > >Bisect pointed commit: >commit 002905eca5bedab08bafd9e325bbbb41670c7712 >Author: Peng Ma <peng.ma@xxxxxxx> >Date: Thu Jun 13 10:27:08 2019 +0000 > dmaengine: fsl-edma: support little endian for edma driver > >as a reason of NFSv4 root boot failures. Toradex Colibri VF50 (Cortex >A5) on Toradex Iris board. > >The user-space starts but hangs - a lot of messages are missing or seriously >delayed. > >Please revert the patch of fix it. If needed I can provide more details about test >system - let me know. > >Full log attached. > >Best regards, >Krzysztof
Attachment:
0001-dmaengine-fsl-edma-support-little-endian-for-edma-dr.patch
Description: 0001-dmaengine-fsl-edma-support-little-endian-for-edma-dr.patch
