We supply our borad over the DCDC_BATT Pin with 3.3V (from DCDC). We use following configuration:
When the borad powerd with 3.3V we have a reset during the barebox is starting. We can increase the FRAC_CPUFRC to 28 or HBUS_DIV to 8 and the Linux starts normally.
When we power our board with 3.8V we have no problems. The Linux starts with the fastest clock configuartion.
Vbat and VCC_Logik (confusing name I now) are connected. What is the problem?