Ok, so it's time to tackle the last big thing: POWER I'm trying to and understand the [PMIC MMPF0100A](https://www.nxp.com/products/MMPF0100) . Reading through the datasheet and looking to the Sabre DualLite CPU2 card. Although, I think the I should check the imex rex They use a now obsolete part ISL6236AIRZ "Notebook Power System Voltage Regulator". But the OpenRex does use the above PMIC I probably need to make a list of voltages I require and figure out what to do about peripherals I don't want to power (like mipi, pcie). The Reference Manual has 2 schematics about power. "Simple" one has 2 DCDC converters Table of voltages and power: Input power: | Name | Voltage | Current? | | ------- | -------- | -------- | | USB IN | 5V | 0.5A? | | BATT IN | 3.2-4.2? | ?? | Voltages required: (page 523) | Name | Notes | Voltage | Source? | | ------------- | -------------------------------------------------------------------- | ---------------------- | ---------------------------- | | VDDARM_IN | | 1.375V | SW1AB | | VDDSOC_IN | | 1.375V | SW1C | | VDDHIGH_IN | | 3V | SW2 | | NVCC_LVDS_2P5 | Do I need LVDS? "should<br>be connected directly to<br>VDD_HIGH_CAP" | | | | NVCC_DRAM | | 1.35 if DDR3L | | | NVCC_RGMII | for 1GB ethernet | 1.5? | | | NVCC_GPIO | buttons | | | | NVCC_ENET | for 100MB ethernet? | | | | NVCC_EIM0 | all EIM must use same voltage, and power EPDC | 1.8V | VGEN4 | | NVCC_EIM1 | | | | | NVCC_EIM2 | | | | | NVCC_NANDF | used for SD4 | | | | NVCC_SD1 | primary boot | | | | NVCC_SD2 | not used | | | | NVCC_SD3 | expansion SD card | | | | NVCC_JTAG | | | | | VDD_SNVS_IN | battery backup supplyr | | | | NVCC_CSI | UART | 3.3V for esp32 / debug | SW4 maybe (but slightly low) | The page says I'd need three supplies: - VDDARM_IN and VDDSOC_IN - VDD_HIGH_IN - everything else?