On Wed, Jul 17, 2019 at 5:24 PM Hartley Sweeten <[email protected]> wrote:
>
> Hello all,
>
> Has the Board ID EEPROM contents changed from what is shown in the System 
> Reference Manual?
>
> I just got some new BeagleBone Black boards from Mouser. I put an image of 
> what I have been using on them and when they boot I see this:
>
> U-Boot 2018.01-00002-g9aa111a004 (Jan 20 2018 - 12:45:29 -0600), Build: 
> jenkins-github_Bootloader-Builder-32
>
> CPU  : AM335X-GP rev 2.1
> I2C:   ready
> DRAM:  512 MiB
> No match for driver 'omap_hsmmc'
> No match for driver 'omap_hsmmc'
> Some drivers were not found
> Reset Source: Power-on reset has occurred.
> MMC:   OMAP SD/MMC: 0, OMAP SD/MMC: 1
> Using default environment
>
> Board: BeagleBone Black
> <ethaddr> not set. Validating first E-fuse MAC
> BeagleBone Black:
> Model: SeeedStudio BeagleBone Green:
> BeagleBone: cape eeprom: i2c_probe: 0x54:
> BeagleBone: cape eeprom: i2c_probe: 0x55:
> BeagleBone: cape eeprom: i2c_probe: 0x56:
> BeagleBone: cape eeprom: i2c_probe: 0x57:
> Net:   eth0: MII MODE
> cpsw, usb_ether
> Press SPACE to abort autoboot in 2 seconds
>
> For some reason U-Boot thinks the model is a SeeedStudio BeagleBone Green.
>
> I then checked the eeprom:
>
> => run eeprom_dump
> Setting bus to 0
> 0000: aa 55 33 ee 41 33 33 35 42 4e 4c 54 42 42 47 31    .U3.A335BNLTBBG1
> 0010: 34 30 31 00 02 00 00 00 08 51 0d 00 ff ff ff ff    401......Q......
>
> This doesn't look like what is shown in the System Reference Manual.
>
> Has the EEPROM format changed?

Nope, a few BBB's escaped GHI with a bad eeprom programmed..


GND TP4 (between Ethernet and barrel plug) then run this "one" command as root:

*****
dd if=/opt/scripts/device/bone/bbb-eeprom.dump
of=/sys/devices/platform/ocp/44e0b000.i2c/i2c-0/0-0050/eeprom
*****
^ This line will get word-wrapped by gmail/googlegroups,etc

Regards,

-- 
Robert Nelson
https://rcn-ee.com/

-- 
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