i2c-EEPROM Access on DragonBoard410c

[cchoksi]

@Mani

None of our CE boards work with 3.3v I2C clients, unless any level shifter is used externally. Also, DB410c can work with Standard (100KHz)(default), Full speed (400KHz) and Fast mode (1MHz). You need to use clock-frequency property in devicetree for changing the freq.

cchoksi:

I was taking about board from different vendor.

[danielt]

Judging from your kernel version number you are running a very old relase. Do you see the same behaviour on recent releases?

[doitright]

Your eeprom is compatible with 100 kHz.

I can almost guarantee that the problem is in how you are wiring it. Share your schematics so that we can help you figure out what is going wrong.

[cchoksi]

I have figured it out why EEPROM was not getting detected. It was because of QCOM_CCI driver in my version of kernel doesn’t support standard I2C interfaces. When I disabled “qcom,cci” flag from device tree and used the platform I2C driver, It started working.

Thanks all for your help .