Hi Krzysztof, Got it. Thanks for your help Best Regards, Peng >-----Original Message----- >From: Krzysztof Kozlowski <krzk@xxxxxxxxxx> >Sent: 2019年7月4日 20:57 >To: Peng Ma <peng.ma@xxxxxxx> >Cc: Vinod Koul <vkoul@xxxxxxxxxx>; dmaengine@xxxxxxxxxxxxxxx; >linux-kernel@xxxxxxxxxxxxxxx; Fabio Estevam <fabio.estevam@xxxxxxx>; Leo >Li <leoyang.li@xxxxxxx>; Andy Tang <andy.tang@xxxxxxx> >Subject: Re: [EXT] [BUG BISECT] Net boot fails on VF50 after "dmaengine: >fsl-edma: support little endian for edma driver" > >Caution: EXT Email > >On Thu, 4 Jul 2019 at 04:10, Peng Ma <peng.ma@xxxxxxx> wrote: >> >> 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. > >With the patch VF50 boots fine. > >BTW, Colibri VF50 nicely boots from network almost out of the box so it is easy >to add it to automated tests for simple boot tests. This way you do not have to >manually test it on such platform... > >Best regards, >Krzysztof
