The “SD2_VSELECT” pad on the CPU is responsible for setting the appropriate voltage level for the connected SD card. It automatically selects 1.8V or 3.3V, depending on the capabilities of the SD card.
This pin is configured in the kernel dts under the “&usdhc2” node.
If needed to set a specific voltage for the SD I/O, configure “SD2_VSELECT” as a GPIO-controlled regulator.
Kindly refer the “reg_usdhc2_vmmc” node in dts to configure a GPIO-controlled regulator.
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