Hi duclm > root@linaro-nano:~# cd /sys/bus/platform/drivers/i2c-rcar; find -type l > ./e6510000.i2c > root@linaro-nano:/sys/bus/platform/drivers/i2c-rcar# echo e6510000.i2c > unbind > [ 30.505950] clk_unregister: unregistering prepared clock: clk_multiplier > root@linaro-nano:/sys/bus/platform/drivers/i2c-rcar# ls -d e6510000.i2c > ls: cannot access e6510000.i2c: No such file or directory > root@linaro-nano:/sys/bus/platform/drivers/i2c-rcar# echo e6510000.i2c > bind > [ 40.825298] cs2000-cp 2-004f: revision - C1 > [ 40.829587] i2c-rcar e6510000.i2c: probed > root@linaro-nano:/sys/bus/platform/drivers/i2c-rcar# ls -d e6510000.i2c > e6510000.i2c > root@linaro-nano:/sys/bus/platform/drivers/i2c-rcar# > root@linaro-nano:/sys/bus/platform/drivers/i2c-rcar# aplay /home/board-lager/FSI/data/test.wav Thank you for your report. This is open (and deep) issue (Oops after "unbind" -> "rebind") We have similar issue on I2C / ALSA SoC / DMAEngine / V4L2 SoC etc... and we should care about it, but it is still under discussion I think. ALSA SoC had started to solve this issue, but it will take over 2 years Best regards --- Kuninori Morimoto
