The Raspberry Pi 3B+ contains the MaxLinear (previously Exar) MxL7704 power management chip (PMIC) with I2C interface for "on-line" reconfiguration of power sequencing and internal voltages.1 This is the first time a Raspberry Pi contains a software programmable power management chip. Which driver configures power management with this chip ?
1 Answer
The PMIC of the Raspberry PI 3B+ is not controlled by Linux, but the closed-source firmware1.