[U-Boot] am335x: i2c: bus 2 issue

[Ilya Ledvich]

Hello,
Recently I've found a problem with I2C bus 2 on AM335X based devices.
Executing the command "i2c dev 2" in the u-boot CLI causes CPU reset.
The issue is found on v2013.10, v2014.01 and v2014.04-rc1 and appears
on BeagleBone and CM-T335 devices.
Please see the log taken from BeagleBone:

U-Boot SPL 2014.01 (Mar 26 2014 - 10:13:48)
No AC power, disabling frequency switch
reading args
spl: error reading image args, err - -1
reading u-boot.img
reading u-boot.img

U-Boot 2014.01 (Mar 26 2014 - 10:13:48)

I2C:   ready
DRAM:  256 MiB
NAND:  0 MiB
MMC:   OMAP SD/MMC: 0, OMAP SD/MMC: 1
*** Warning - readenv() failed, using default environment

Net:   <ethaddr> not set. Validating first E-fuse MAC

cpsw, usb_ether

Hit any key to stop autoboot:  0

mmc0 is current device

SD/MMC found on device 0

reading uEnv.txt

** Unable to read file uEnv.txt **

** File not found /boot/zImage **

Card did not respond to voltage select!

mmc1(part 0) is current device

Card did not respond to voltage select!

Booting from nand ...

no devices available

no devices available
Bad Linux ARM zImage magic!
U-Boot#
U-Boot# i2c dev 0
Setting bus to 0
U-Boot# i2c dev 1
Setting bus to 1
U-Boot# i2c dev 2
Setting bus to 2
data abort

     MAYBE you should read doc/README.arm-unaligned-accesses

pc : [<8f769b58>]          lr : [<8f769b34>]
sp : 8f62ddb0  ip : 00b41640     fp : 00000000
r10: 00000003  r9 : 8f62df28     r8 : 00000036
r7 : 00000001  r6 : 000186a0     r5 : 4819c000  r4 : 8f7a35f4
r3 : 00000000  r2 : 0000004b     r1 : 00030d40  r0 : 0000003c
Flags: Nzcv  IRQs off  FIQs on  Mode SVC_32
Resetting CPU ...

resetting ...

Best regards,
Ilya.