Debugging i2c : i2cdetect cant detect a device on i2c line

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 



Hello ,
I am trying to detect an i2c device A on i2c1 line on  one of the Arm
Cortex A7 platform but not able to see any device on a given address (
0x3d) .

Is there any parameters of i2c which i can change like rise/fall time
, timeout etc in a device tree or kernel source and re test it?
I have tried changing the i2c speed from 100KHz to 400 KHz  but no success.
I have even tried removing the 1.5K pull ups on the i2c lines but no result.

So I wanted to know on what factors i2cdetect may not probe the device
or show it on the hex dump.
What parameters of i2c driver i can tinker and where? Is Platform dts
is the only file i can modify and test with?
Kernel is 5.51 .
There are other 2-3 devices on the same lines which responds to
i2cdetect with correct address but not this device (0x3D) .
Its i2c address is also different from the current devices.

Regards,
R

_______________________________________________
Kernelnewbies mailing list
Kernelnewbies@xxxxxxxxxxxxxxxxx
https://lists.kernelnewbies.org/mailman/listinfo/kernelnewbies



[Index of Archives]     [Newbies FAQ]     [Linux Kernel Mentors]     [Linux Kernel Development]     [IETF Annouce]     [Git]     [Networking]     [Security]     [Bugtraq]     [Yosemite]     [MIPS Linux]     [ARM Linux]     [Linux RAID]     [Linux SCSI]     [Linux ACPI]

  Powered by Linux