Now the 32k clock is working. I do not find the manual easy tu understand on what has to be done so it was try and error until the auto calibration worked und gives a usable 32k clock. This 32k clock is required to enable bluetooth on my SP6330. Without the clean clock the driver was not able to identify the ID of the module. Attached are two patches. One changes the sunxi rtc driver to calibrate the clock. The kernel needs to be recompiled to include the change. The second p