[BISECTED] BeagleBone Black doesn't boot after a58147c2dbbf

[Nishanth Menon]

On 11:40-20220807, Matwey V. Kornilov wrote:
> пт, 5 авг. 2022 г. в 18:01, Robert Nelson <robertcnelson at gmail.com>:
> >
> > On Fri, Jul 29, 2022 at 12:07 PM Matwey V. Kornilov
> > <matwey.kornilov at gmail.com> wrote:
> > >
> > > пт, 29 июл. 2022 г. в 19:46, Tom Rini <trini at konsulko.com>:
> > > >
> > > > On Fri, Jul 29, 2022 at 07:38:28PM +0300, Matwey V. Kornilov wrote:
> > > > > пт, 29 июл. 2022 г. в 19:32, Tom Rini <trini at konsulko.com>:
> > > > > >
> > > > > > On Fri, Jul 29, 2022 at 07:20:11PM +0300, Matwey V. Kornilov wrote:
> > > > > >
> > > > > > > Hi,
> > > > > > >
> > > > > > > I've tried to build an am335x_evm_defconfig u-boot to use it on my
> > > > > > > BeagleBone Black board. Surprisingly, I've found that it doesn't work,
> > > > > > > I see the silent console: no messages even from SPL.
> > > > > > >
> > > > > > > Using bisect I've found that the following commit breaks the booting:
> > > > > > >
> > > > > > >     a58147c2dbbf ("board: ti: common: board_detect: Do 1byte address
> > > > > > > checks first.")
> > > > > > >
> > > > > > > Could you please help me?
> > > > > >
> > > > > > Can you share some more details about which BeagleBone Black you have,
> > > > > > specifically the revision?
> > > > >
> > > > > It is an ordinary C revision. Unfortunately, I cannot remember who the
> > > > > producer was. As far as I know many companies made BeagleBone Black
> > > > > and EEPROM content can be different.
> > > >
> > > > OK, that'll help some.  Can you see what the specific part number of the
> > > > EEPROM is?  That might also help Nishanth figure out what to do here.
> > >
> > > Attached here is the EEPROM dump.
> >
> > .U3.A335BNLT00C0
> >
> > Ah, the "CO"... i'm pretty sure that board was made by Element14,
> > (they messed up the position of the "C") not that it really mattered
> > as the A335BNLT is only used..
> 
> Hi Robert,
> 
> I have BBB from different vendors, and I do remember that I've
> purchased the Element14 version at some point. However, I've messed
> everything up and cannot figure out which board from which vendor. You
> are the most probably right, but still I cannot confirm the origin.
> 
> >
> > Can you please take a quick snapshot of the eeprom, it should be...
> > 24LC32AT-I/OT but maybe they used another variation..
> 
> Attached here is U7. It says M67E. 24AA32A/24LC32A datasheet page 14
> says that it should be 24LC32AI.
> 

Wierd.. took me a bit of digging, but I did get the element14 beaglebone
rev C black board as well.. but it boots fine for me.

https://gist.github.com/nmenon/104f040a67a6af0b0418c95ad83ad50b

I tested the very tip of master:
3dd4e916324e Merge https://source.denx.de/u-boot/custodians/u-boot-marvell

Seemed to boot fine. Apparently it is supposed to be the same type as
your board as well and it boots just fine on master.

U7, however, on my board, is unmarked.

Not really sure what to make of this.

-- 
Regards,
Nishanth Menon
Key (0xDDB5849D1736249D) / Fingerprint: F8A2 8693 54EB 8232 17A3  1A34 DDB5 849D 1736 249D
-------------- next part --------------
A non-text attachment was scrubbed...
Name: nm-u7.jpg
Type: image/jpeg
Size: 193758 bytes
Desc: not available
URL: <https://lists.denx.de/pipermail/u-boot/attachments/20220810/9cc92b2a/attachment-0001.jpg>