Unhandled fault: external abort on non-linefetch (0x1028)

Hello,
I am trying to access i2c_controller for AM335x sitara processor.When I am reading I2C_REVNB_HI register with ioread() I am getting a crash with show below error?

Unhandled fault: external abort on non-linefetch (0x1028)

What might be reason for such crash?

You probably don't have the I2C hardware enabled via device-tree and
it's disabled with it's clocks turned off.