I've had my BB-AI a couple weeks, and I'm running from the on board eMMC with debian 9.9 just fine, The tidl examples work. But I wanted to flash the newer 'buster' image. It does not work. I read all the good advice from here:
I tried 3 different images downloaded. I tried 4 different SD cards, one 8 GB (no name brand), one 16 GB (PNY brand), two 32 GB (both Kingston brand). Used balena etcher, linux dd, win32 flasher. All said they were successful but nothing would boot on my BB-AI. OK I said, the good people on e14 will ask me a bunch of questions, what do I need to do to be ready? OK, I should read the boot messages on the serial debug UART. . . .
Read sjmill01 informative guide to the BB-AI
Read shabaz getting started guide,
BeagleBone AI (BB-AI) - Getting Started
Great but I don't have a JST-ZH cable, and it'll take a while to get one. So I pulled apart what I had, an old CD-ROM to sound card cable, hot glued the loose sockets together at something close to the required 1.5mm pitch and plug it into my FTDI board. Amazingly it worked.
Now for my question, do I have a bad board? I see voltage errors in the debug messages. I did switch power supplies. I was using a generic USB-C 3 amp power supply, so I tried my raspberry Pi 4 official 3 amp power supply, same errors on boot up. Do I have a damaged SD slot?
Here's boot up dump:
[ 255.631173] reboot: Restarting system
U-Boot 2019.07-rc4-00001-g607b5b738b (Jul 06 2019 - 21:01:15 -0500), Build: jenkins-github_Bootloader-Builder-127
CPU : DRA752-GP ES2.0
Model: BeagleBoard.org BeagleBone AI
Board: BeagleBone AI REV A
DRAM: 1 GiB
MMC: OMAP SD/MMC: 0, OMAP SD/MMC: 1
CTRL_CORE_PAD_I2C1_SDA: 0x00060000
CTRL_CORE_PAD_I2C1_SCL: 0x00060000
CTRL_CORE_PAD_GPMC_A0: 0x00060007
CTRL_CORE_PAD_GPMC_A1: 0x00060007
CTRL_CORE_PAD_VIN2A_D4: 0x0005000f
CTRL_CORE_PAD_VIN2A_D5: 0x0005000f
CM_L4PER_GPIO7_CLKCTRL: 0x00000001
CM_L4PER_I2C1_CLKCTRL: 0x00000002
CM_L4PER_I2C4_CLKCTRL: 0x00000002
CM_L4PER_L4_PER1_CLKCTRL 0x00000001
PM_L4PER_I2C1_WKDEP 0x0000b000
RM_L4PER_I2C1_CONTEXT 0x00000002
PM_L4PER_I2C4_WKDEP 0x0000b000
RM_L4PER_I2C4_CONTEXT 0x00000001
BeagleBone: cape eeprom: i2c_probe: 0x54
Checking (ret 1 bus works) I2C1 bus. ret 1
Checking (ret 1 bus works) I2C4 bus. ret 1
BeagleBone: cape eeprom: i2c_probe: 0x55
Checking (ret 1 bus works) I2C1 bus. ret 1
Checking (ret 1 bus works) I2C4 bus. ret 1
BeagleBone: cape eeprom: i2c_probe: 0x56
Checking (ret 1 bus works) I2C1 bus. ret 1
Checking (ret 1 bus works) I2C4 bus. ret 1
BeagleBone: cape eeprom: i2c_probe: 0x57
Checking (ret 1 bus works) I2C1 bus. ret 1
Checking (ret 1 bus works) I2C4 bus. ret 1
Net:
Warning: ethernet@48484000 using MAC address from ROM
eth0: ethernet@48484000
Press SPACE to abort autoboot in 1 seconds
usb_boot is currently disabled
scsi_boot is currently disabled
Card did not respond to voltage select!
Card did not respond to voltage select!
Card did not respond to voltage select!
switch to partitions #0, OK
mmc1(part 0) is current device
Partition Map for MMC device 1 -- Partition Type: DOS
Part Start Sector Num Sectors UUID Type
1 8192 30613504 d27d9455-01 83 Boot
Scanning mmc device 1
Checking for: /uEnv.txt ...
Checking for: /boot/uEnv.txt ...
603 bytes read in 1 ms (588.9 KiB/s)
Loaded environment from /boot/uEnv.txt
Checking if uname_r is set in /boot/uEnv.txt ...
debug: [uname_r=4.14.108-ti-r134] ...
loading /boot/vmlinuz-4.14.108-ti-r134 ...
9717736 bytes read in 219 ms (42.3 MiB/s)
loading /boot/dtbs/4.14.108-ti-r134/am5729-beagleboneai.dtb ...
150333 bytes read in 4 ms (35.8 MiB/s)
uboot_overlays: add [enable_uboot_overlays=1] to /boot/uEnv.txt to enable...
loading /boot/initrd.img-4.14.108-ti-r134 ...
4905353 bytes read in 111 ms (42.1 MiB/s)
debug: [console=ttyS0,115200n8 root=/dev/mmcblk1p1 ro rootfstype=ext4 rootwait coherent_pool=1M net.ifnames=0 rng_core.default_quality=100 quiet] ...
debug: [bootz 0x82000000 0x88080000:4ad989 0x88000000] ...
## Flattened Device Tree blob at 88000000
Booting using the fdt blob at 0x88000000
Loading Ramdisk to 8fb52000, end 8ffff989 ... OK
Loading Device Tree to 8fb2a000, end 8fb51b3c ... OK
Starting kernel ...
[ 0.002593] /cpus/cpu@0 missing clock-frequency property
[ 0.002616] /cpus/cpu@1 missing clock-frequency property
[ 0.409209] omap-mailbox 4a0f4000.mailbox: no available mbox devices found
[ 0.409279] omap-mailbox 4883a000.mailbox: no available mbox devices found
[ 0.409343] omap-mailbox 4883c000.mailbox: no available mbox devices found
[ 0.409406] omap-mailbox 4883e000.mailbox: no available mbox devices found
[ 0.410067] omap-mailbox 48844000.mailbox: no available mbox devices found
[ 0.410133] omap-mailbox 48846000.mailbox: no available mbox devices found
[ 0.410196] omap-mailbox 4885e000.mailbox: no available mbox devices found
[ 0.410258] omap-mailbox 48860000.mailbox: no available mbox devices found
[ 0.410320] omap-mailbox 48862000.mailbox: no available mbox devices found
[ 0.410382] omap-mailbox 48864000.mailbox: no available mbox devices found
[ 0.410444] omap-mailbox 48802000.mailbox: no available mbox devices found
[ 0.864339] sdhci-omap 4809c000.mmc: failed to set system capabilities
[ 0.871583] sdhci-omap 480b4000.mmc: failed to set system capabilities
[ 0.881628] tpd12s015 encoder@0: failed to find video source
[ 0.887626] connector-hdmi connector@0: failed to find video source
[ 1.014288] dwc3 488d0000.usb: failed to initialize core
[ 1.048839] omap_voltage_late_init: Voltage driver support not added
[ 1.170035] sdhci-omap 4809c000.mmc: no pinctrl state for ddr_1_8v mode
[ 1.176755] sdhci-omap 4809c000.mmc: no pinctrl state for hs200_1_8v mode
rootfs: clean, 134076/958464 files, 1041142/3826688 blocks
[ 9.826748] cpu cpu0: _get_optimal_vdd_voltage: Failed optimized voltage match for 860000
Starting Authorization Manager...
[ OK ] Started Authorization Manager.
Starting Disk Manager...
[ OK ] Started Disk Manager.
[ OK ] Listening on Load/Save RF Kill Switch Status /dev/rfkill Watch.
[ OK ] Found device /dev/ttyS0.
[ OK ] Started Serial Getty on ttyS0.
Debian GNU/Linux 9 beaglebone ttyS0
BeagleBoard.org Debian Image 2019-08-03
Support/FAQ: http://elinux.org/Beagleboard:BeagleBoneBlack_Debian
default username:password is [debian:temppwd]
beaglebone login:
