BBB boot is flaky lately

[Sulev-Madis Silber (ketas)]

Hello.

I have many issues booting my BBB lately. Currently using r264282

Not only I get weird eMMC detection issues (1/4/8bit bus) and even
failed boots (when device is not found at all):

random boot #1:

-------------------------------------------------------------
mmcsd0: 2GB <MMC MMC02G 3.10 SN 706010460 MFG 11/2012 by 254 0x004e> at
mmc0 48.0MHz/8bit/65535-block
-------------------------------------------------------------

random boot #2:

-------------------------------------------------------------
mmcsd0: 2GB <MMC MMC02G 3.10 SN 706010460 MFG 11/2012 by 254 0x004e> at
mmc0 48.0MHz/1bit/65535-block
-------------------------------------------------------------

random boot #3:

-------------------------------------------------------------
mmcsd0: 2GB <MMC MMC02G 3.10 SN 706010460 MFG 11/2012 by 254 0x004e> at
mmc0 48.0MHz/4bit/65535-block
-------------------------------------------------------------


Now, I managed to get this (once):

-------------------------------------------------------------
cpsw0: <3-port Switch Ethernet Subsystem> mem 0x4a100000-0x4a103fff irq
40,41,42,43 on simplebus0
cpsw0: CPSW SS Version 1.12 (0)
cpsw0: Initial queue size TX=128 RX=384
cpsw0: Ethernet address: c8:a0:30:ad:93:a8
cpsw0: Failed to read from PHY.
cpsw0: attaching PHYs failed

vm_fault(0xc08b0c50, 0, 1, 0) -> 1
Fatal kernel mode data abort: 'Translation Fault (S)'
trapframe: 0xc0996af0
FSR=00000005, FAR=00000018, spsr=80000193
r0 =c288d280, r1 =00000000, r2 =00000019, r3 =60000193
r4 =00000000, r5 =c288d280, r6 =00000006, r7 =c04d7964
r8 =c288d280, r9 =c28e828c, r10=c28e60c8, r11=c0996b50
r12=00000000, ssp=c0996b40, slr=c04f8af4, pc =c0344164

panic: Fatal abort
Uptime: 1s
Automatic reboot in 15 seconds - press a key on the console to abort
Rebooting...
-------------------------------------------------------------

After reboot, problem persists, needs HW reset to successfully boot up.


Any ideas?


Thanks.