[U-Boot] [PATCH v2 5/5] imx: add i.MX6ULZ board

[Stefan Roese]

Hi Peng,
Hi Fabio,

On 06.09.19 09:43, Peng Fan wrote:
>> Subject: Re: [U-Boot] [PATCH v2 5/5] imx: add i.MX6ULZ board
>>
>> Hi Stefan,
>>
>> On Thu, Sep 5, 2019 at 5:59 AM Stefan Roese <sr at denx.de> wrote:
>>
>>> a)
>>> Why is SPL not used in the mainline i.MX6ULL/ULZ port? The i.MX6UL
>>> (14x14) does use SPL.
>>
>> Yes, I think it could SPL as well. Maybe Peng can comment.
> 
> NXP vendor tree not support SPL, so when I upstream the code, SPL was not
> included.

I see. Thanks for the update here. I might work on SPL support, if this
seems necessary for my custom i.MX6ULZ board.

I do have another question though. I'm currently testing QSPI booting
on the i.MX6ULL EVK. And this does not work 100% reliably. Sometimes
the board boots after programming of the IMX image to 0x1000 in QSPI
NOR to the U-Boot prompt. And sometimes I see no output at all. I
do have the QSPI binary programmed at 0x400. BTW, these binaries boot
all just fine when booted via the "imx_usb" loader. Only when booted
directly from QSPI (DIP switches) it fails sometimes.

Is this a known problem?

Do you have a reference U-Boot binary for QSPI booting for the i.MX6ULL
EVK? Best would be including the QSPI header (offset 0x400).

Thanks,
Stefan