i2c-bus kernel modules

[robertvaldimarsson]

Hello forum.

I am running debian on a pine64 (2GB) and i want to access a device on the i2c-bus.

While two busses show up (/dev/i2c-0 and i2c-1) i can not see my device using i2cdetect.

I tried "modprobe i2c-dev" but it does not show up in lsmod after that. Usually there also has to be a kernel module for the processor (i2c_bcm2xxx) that is loaded before i2c-dev, but i can't find it. Is it implemented yet for the cortex 53?


Does anyone have ideas what i could try next? Afaik a change in the /boot/config has to be made for the raspberry pi3. Is there maybe a similar change neccessary for the pine?

---

a bit more data maybe:

Code:

root@pine64pro:/home/debian# ls -l /dev/i2c-*
crw-rw---- 1 root i2c 89, 0 Jun  2 19:51 /dev/i2c-0
crw-rw---- 1 root i2c 89, 1 Jun  2 19:51 /dev/i2c-1

Code:

root@pine64pro:/home/debian# i2cdetect -l
i2c-0    i2c           twi0                                I2C adapter
i2c-1    i2c           twi1                                    I2C adapter

Code:

root@pine64pro:/home/debian# lsmod
Module                  Size  Used by
vfe_v4l2              747618  0
vfe_io                 34085  1 vfe_v4l2
mali                  199851  0
videobuf2_dma_contig    17668  1 vfe_v4l2
videobuf2_memops       12546  1 videobuf2_dma_contig
videobuf2_core         30952  1 vfe_v4l2
ss                     33083  0
cedar_ve               17368  0
8723bs               1365012  0
cfg80211              374207  1 8723bs