Hi,
Greetings of the day!
In the Genio 1200 EVK there is a section on system power paths which explains the 3 paths.
3.2.1 System Power
There are three power supply paths for the system. DC adaptor supply have two paths connect 12V DC adaptor, a buck converter (Richtek RT6238), which convert 12V (DC Jack) to 4.2V output. The 4.2V output connect two jumpers.
The first path is to short the jumper J50, the 4.2V output is connected to VSYS.
The second path is to short the jumper J44, the 4.2V output is connected to the charger IC (MediaTek MT6360), and then connected to VSYS through the charger IC.
Note: DO NOT connect the battery in the second path, as this will cause the RT6238’s output power to charge the battery unmanaged.*
The third path is battery power (not verified), the battery power is connected to the charger IC (MediaTek MT6360), and then connected to VSYS through the charger IC. This path supports those applications using Li-polymer batteries.*
We want to use the third path, battery power. In our initial observation the battery does not seem to be charging if we connect the type c usb. Our understanding is - since VBUS is connected to connected to MT6360 charging IC, it should charge the battery and it will generate the VSYS voltage as well. This is shown in the block diagram of the schematic page as well.
Is there anything that we need to do the make the MT6360 charging functionality working? In hardware or anything to in software?
Thanks,
Somesh