If enabled there is wrong data returned via i2c, like:
$ i2cdump -y 9 0x12 s 0x9a
     0  1  2  3  4  5  6  7  8  9  a  b  c  d  e  f    0123456789abcdef
00: 22 44 88 49 92 4f 9e 54 a8 20 40 4d 9a 6f de 6e    "D?I?O?T? @M?o?n
10: dc
Signed-off-by: Adam Wujek <dev_public@wujek.eu>