[U-Boot] [PATCH v2 0/9] basic support for Allwinner A83T SOC.

[Hans de Goede]

Hi,

On 30-11-15 16:39, Vishnu Patekar wrote:
> Hello Hans,
>
>
>
> On Mon, Nov 30, 2015 at 4:13 PM, Hans de Goede <hdegoede at redhat.com> wrote:
>> Hi Vishnu,
>>
>>> This patch v2 of series that adds basic support for Allwinner A83T SOC
>>> with
>>> review comments addressed.
>>
>> Can you provide some quick instructions on how to test this on the
>> A83T HomletV2 ?
>>
>> With v1 of these patches I tried to just build them and dd them to
>> the sdcard, but that did not work.
>>
>> In the mean time I've figured out that I can get a serial console
>> with the firmware in the nand using a sdcard breakout board, so
>> I should be able to enter FEL mode by pressing 2 there, but it would
>> be really nice if the board would just boot from sdcard...
>>
> I broke microsd connector of my A83T board, so boot from microsd not tested.
>
> As you have microSD breakout UART working, you can set
> CONFIG_UART0_PORT_F=y and use FEL mode, commands as below
> sunxi-fel spl u-boot-sunxi-with-spl.bin
> sunxi-fel  write 0x4a000000 u-boot-dtb.bin
>
> This is how i have tested it for now.

Ok, that is unfortunate, because regular sd-card boot does not seem to be
working. I think you may be relying on some reset / clocks being enabled by
boot0 before it passes control to the FEL ROM based on you pressing 2
on the serial console. The reason I believe this is that not even the SPL
header is printing, which points to an uart pin / clk / reset setup problem.

I will see if I can get things working with sdcard boot tonight.

Regards,

Hans