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VREG_L8C_1P8: Connects to L8 LDO of PM8250 PMIC, Can be as sensor IO voltage source.
VDC_5V: Connects to a board DC buck power 5V, Can be as a 5V voltage source.
VBAT: Connects to a board DC buck power 4.2V, Can be as a 4.2V voltage source.