I would like to ask about ENABLE_DCDC bit setting of i.MX28.
My customer is confused on the setting of ENABLE_DCDC bits.
There are two ENABLE_DCDC bits;
One is in HW_POWER_5VCTRL register and another is in HW_POWER_DCDC4P2 register.
In i.MX28 reference manual, it is said as follows for the description of the bit in HW_POWER_DCDC4P2 register.
“Enable the dcdc converter to use the DCDC_4P2 pin as a power source…”
In my understanding the DCDC_4P2 comes from internal 4P2 LinReg. And it also means 5V is present as reference manual says as the description for the bit in HW_POWER_5VCTRL.
So, the customer thinks the meanings of two ENABLE_DCDC bits are the same.
Could you give a help to better understanding on the two ENABLE_DCDC bits setting?