fsl-dcu not works on latest "drm-next"

[Meng Yi]

Hi Stefan,

> >> static const struct regmap_config fsl_dcu_regmap_config = {
> >>     .reg_bits = 32,
> >>     .reg_stride = 4,
> >>     .val_bits = 32,
> >>     .cache_type = REGCACHE_RBTREE,
> >
> > This needs to be a flat cache. See
> > https://lists.freedesktop.org/archives/dri-devel/2016-January/099121.h
> > tml or https://lkml.org/lkml/2016/3/24/281
> > max_register also needs an appropriate value.
> 
> Ok, since the complete set which switches to the atomic helper is not stable
> material (and also won't make it into 4.7 anymore), I created a seperate bugfix
> now:
> https://lists.freedesktop.org/archives/dri-devel/2016-June/109625.html
> 
> What I don't quite get yet is the REGCACHE_FLAT influencing the endianness
> behavior?
> 

I think it didn't. And endianness issue have been fixed by regmap maintainer.

> If it is, Meng, can you test again with v4.7-rc1 + the FLAT cache patch above?
> 

I have tested FLAT cache on LS1021A, it works fine. By the way do you have any opinion on LS1021A's
HDMI driver? 

Regards,
Meng