FAQ_MA35_Family_Adjust Core Power by PMIC

[ytliu6]

In specific circumstances, it may be necessary to fine-tune the core power of the chip if the VDD_Core falls short of 1.25V. It's important to note that the suitability of this method depends on the power IC integrated into the board. Please refer to the power IC's specifications, as it may not support all voltage values.


Buildroot

Code: Select all

$ make menuconfig

Bootloaders --->
   (125) MA35D1 CPU Core Power.

$ make clean 
$ make 

Yocto

Code: Select all

Path: /yocto/source/meta-ma35d1/conf/machine
Choose the board you used like numaker-som-ma35d16a81.conf

# Set CPU core Power
# Suggestion: 1.25 for BGA packages, 1.20V for LQFP packages
# 120: 1.20V, 125: 1.25V, etc.
TFA_CPU_VOLTAGE = "125

$ bitbake tf-a-ma35d1 –c cleanall
$ bitbake nvt-image-qt5 –c cleanall
$ bitbake nvt-image-qt5 

#MA35 #PMIC #Power