PMIC’s LDO1 is connected to I/O voltage of PL HP Banks (PL Bank 67 & 68) and By default, IO voltage of PL Bank67 is set as 1V and after U-boot bootup configurable to 1.8V.
To configure other voltages, please follow the procedures outlined in Voltage setting on HP Bank of the Software User Guide. This section provides the necessary I2C register commands or device tree parameters required to adjust the regulator’s output voltage.
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Please find the detailed product information here:
Zynq™ UltraScale+™ ZU19/ZU17/ZU11 MPSoC System on Module