[PATCH v2 0/9] add EDO feature for gpmi-nand driver

[Marek Vasut]

Dear Huang Shijie,

> The ONFI nand supports the EDO (extended data out) feature in
> asynchronous mode when the host controller(such as gpmi-nand)
> uses a tRC of less then 30ns.
> 
> The gpmi can supports this EDO feature.
> This patch set adds the EDO support the gpmi-nand driver.
> 
> patch 1 ~ patch 2:
> 	 These two patches provide the infrastructure for the EDO feature.
>          They add necessary MTD helpers for the ONFI nand set/get features,
> 	 and the help to get the supportted timing mode.
> 	 These two patches are new version. The init version has been
> 	 reviewed by Vikram & Florian.
> 
> patch 3 ~ patch 7:
>          These patches are clean-ups for the gpmi-nand's timing code.
> 	 Also they make the some preparations for the EDO patch.
> 
> patch 8: add the EDO feature to the gpmi-nand.
> 
> 
> patch 9: a small optimization for the timing.
>          only set the timing registers one time.
> 
> I tested this patch set on the IMX6Q-arm2 board with several Micron's
> ONFI nand chips. Some chips only can supports to mode 4, some chips
> can supports to mode 5.
> 
> The performance is much improved. Take Micron MT29F32G08MAA for example
> (in mode 5, 100MHz):
[...]

Was this ever tested on something else than mx6q? I suspect these broke gpmi 
nand on mx28. Can you please verify?