[MinnowBoard] i2c support

[Tony]

Hi,
	I am trying to talk to TI led controller using i2c#5, pin 13 and 15. 
But for some reason I cant get the i2c pins working. I tried connecting 
i2c probe on the pins. But don't see any clock when I do i2cdetect.

sudo i2cdetect -y 5

I am using xubuntu kernel 4.4. The related kernel modules I could find are

i2c_designware_platform and i2c_designware_core

For some reason i2c-5 is getting used by display driver.

i2cdetect -l
i2c-0	unknown   	i915 gmbus ssc                  	N/A
i2c-1	unknown   	i915 gmbus vga                  	N/A
i2c-2	unknown   	i915 gmbus panel                	N/A
i2c-3	unknown   	i915 gmbus dpc                  	N/A
i2c-4	unknown   	i915 gmbus dpb                  	N/A
i2c-5	unknown   	i915 gmbus dpd                  	N/A
i2c-6	unknown   	DPDDC-B                         	N/A
i2c-7	unknown   	Synopsys DesignWare I2C adapter 	N/A
i2c-8	unknown   	Synopsys DesignWare I2C adapter 	N/A


Any suggestions on what I might be doing wrong?

Many Thanks,
Tony