[U-Boot] MXS NAND: DMA read error

Marek Vasut
2012-04-17T09:05:14Z

> On 04/17/2012 11:29 AM, Marek Vasut wrote:
> >> On 04/17/2012 11:17 AM, Marek Vasut wrote:
> >>>> I'm trying to compile latest U-Boot to mx28evk (rev D) with NAND
> >>>> support. U-Boot boots up but NAND chip is not detected and DMA read
> >>>> error is popped up.
> >>>
> >>> MX28 EVK has no NAND, right?
> >>
> >> MX28 EVK has NAND slot and I have installed NAND chip on it. I'm using
> >> same chip with older pached U-Boot and Linux and chip is working fine
> >> with them.
> >>
> >>> Otherwise, check if you have APBH DMA enabled in your
> >>> include/configs/mx28evk.h
> >>
> >> Config file include/configs/mx28evk.h has following line.
> >>
> >> #define CONFIG_APBH_DMA
> >
> > And you have dcache and icache disabled ?
>
> Yes, they seem to be disabled:
>
> #define CONFIG_SYS_ICACHE_OFF
> #define CONFIG_SYS_DCACHE_OFF
>
> I'm using latest U-Boot and default mx28evk.h config:
> http://git.denx.de/?p=u-boot.git;a=blob;f=include/configs/mx28evk.h;h=02f33
> 66ed263ff66fe3b9b2089ec95ef461a92c0;hb=HEAD
>
> I have added only NAND related lines I sent in first message.

Lauri, as much as I'd love to help you, MX28EVK is Fabio's board. So let's see
what he has to say ;-)

>
> BR,
> Lauri

Best regards,
Marek Vasut