i2c stopped working

[Joshua Woods]

I was able to use all the i2c functions yesterday and then today when I try to use them nothing happens. When I run the i2cdetect command it scrolls really slow checking the different addresses. 

this is what is printed when i run the dmesg -Hw | grep  i2c 

root@beaglebone:/dev# dmesg -Hw | grep i2c

[  +0.000576] omap_i2c 44e0b000.i2c: could not find pctldev for node /ocp/l4_wkup@44c00000/scm@210000/pinmux@800/pinmux_i2c0_pins, deferring probe

[  +0.000049] omap_i2c 4819c000.i2c: could not find pctldev for node /ocp/l4_wkup@44c00000/scm@210000/pinmux@800/pinmux_i2c2_pins, deferring probe

[  +0.000974] i2c /dev entries driver

[  +0.002614] input: tps65217_pwr_but as /devices/platform/ocp/44e0b000.i2c/i2c-0/0-0024/input/input0

[  +0.000238] omap_i2c 44e0b000.i2c: bus 0 rev0.11 at 400 kHz

[  +0.000038] omap_i2c 4819c000.i2c: bus 2 rev0.11 at 100 kHz

[  +0.055853] omap_i2c 4802a000.i2c: bus 1 rev0.11 at 100 kHz

[ +33.972129] omap_i2c 4802a000.i2c: timeout waiting for bus ready

[  +1.008219] omap_i2c 4802a000.i2c: timeout waiting for bus ready

[  +1.007780] omap_i2c 4802a000.i2c: timeout waiting for bus ready

[  +1.008001] omap_i2c 4802a000.i2c: timeout waiting for bus ready

[  +1.007981] omap_i2c 4802a000.i2c: timeout waiting for bus ready

[  +1.008231] omap_i2c 4802a000.i2c: timeout waiting for bus ready

I am not sure what is tying the bus up and why it is not ready

any help is appreciated 

and I did try to reboot it but that did not seem to help 

[ts]

Slow i2cdetect means is probably something with your wiring or a defekt i2c-device. Best to check all connectors, the wiring and pull-up resistors.