Hello,
Can you please tell me, how and where can I configure VBUSVALID voltage and VDD5V Brownout voltage ?
I use Yocto with bitbake + Linux kernel 3.12.
I read the AP AN4199 "Using the i.MX28 Power Management Unit and Battery Charger", and it said :
"VBUSVALID
The threshold value for a valid 5-V status is configured in the software, and the default value is 4.4 V on the Linux BSP. "
and
"VDD5V Brownout
The VDD5V-source
brownout level is a voltage threshold and is an absolute voltage value as in the case of a battery brownout.
There are four available settings for VBUS droop brownout:
• 4.3 V
• 4.4 V
• 4.5 V
• 4.7 V
Each setting has a 50-mV hysteresis to prevent chattering. It is set to 4.5 V in the Linux BSP "
But I would like to know in which file do i need to make the modifications and how ?
Many thanks in advance.
