On Tuesday 24 May 2016 23:20:02, Stefan Agner wrote: > On 2016-05-24 19:14, Meng Yi wrote: > > I found that its regmap endianness issue, so I want to replace the > > "regmap". > Hm, replace with what? Note that we need some kind of endianness > convertion since the IP is big endian on LS1021a and little endian on > Vybrid (vf610).
Yep, regmap is required and was broken meanwhile but should be fixed now. See linked lkml post. > Is it maybe just an issue with regmap/the big-endian property in the > device tree? Maybe this thread is interesting for you: > https://lkml.org/lkml/2016/3/23/233 AFAICT device tree should not been changed here. The "big-endian" property was there fromt he beginning. > > I just tested the latest drm-next branch on Freescale/NXP ls1021a-twr, > > and got some log below. And fsl-dcu not works. > > > > Since "drm-next" merged some branch , use git bisect had some problem , > > > > so I manually checked out that "fsl-dcu" works at > > d761701c55a99598477f3cb25c03d939a7711e74 > > > > And not works now. some log below: Which commit actually broke your kernel? And where to fetch it from? Is your problem really caused by regmap? Best regards, Alexander