rpi-config: increase USB current limit for Raspberry Pi 5#1577
Open
flowergom wants to merge 1 commit intoagherzan:masterfrom
Open
rpi-config: increase USB current limit for Raspberry Pi 5#1577flowergom wants to merge 1 commit intoagherzan:masterfrom
flowergom wants to merge 1 commit intoagherzan:masterfrom
Conversation
The default power profile on Raspberry Pi 5 may limit USB current, preventing the stable operation of touch devices and other peripherals. - Append usb_max_current_enable=1 for raspberrypi5. - Increases available USB current to 1.6A. - Resolves connectivity issues for external power-dependent devices. Signed-off-by: Minjae Kim <flowergom@gmail.com>
agherzan
reviewed
Feb 10, 2026
|
|
||
| do_deploy:append:raspberrypi5() { | ||
| echo "# Setting usb_max_current_enable=1 allows up to 1.6A (1600mA), enabling extra USB devices. " >> $CONFIG | ||
| echo "usb_max_current_enable=1" >> $CONFIG |
Owner
There was a problem hiding this comment.
How is Raspberry OS dealing with this? Do they do the same for RPi5? Only RPi5?
There was a problem hiding this comment.
@flowergom in your link is stated :
Okay, you have a 3A power supply which limits USB current to 600mA. Best solution is to get a RPi PSU for Pi5, which is capable of 5A and will negotiate a higher USB current limit.n Alternatively you could try
RPi documentation wrote:
Set usb_max_current_enable=1 in /boot/firmware/config.txt to enable USB boot.
which will increase the USB current limit, but may crash the whole system if you run out of current overall.
this is a workaround that not everyone using this layer is concerned about, you may enable it in your local.conf by adding:
RPI_EXTRA_CONFIG += ' \n \
# Enable max current \n \
usb_max_current_enable=1 \n \
'
Owner
There was a problem hiding this comment.
That's exactly what I was suspecting. Would the mentioned solution work for you?
There was a problem hiding this comment.
note that usb_max_current_enable=1 is required to boot rpi5 from an USB device
This file contains hidden or bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment
3 participants
Add this suggestion to a batch that can be applied as a single commit.This suggestion is invalid because no changes were made to the code.Suggestions cannot be applied while the pull request is closed.Suggestions cannot be applied while viewing a subset of changes.Only one suggestion per line can be applied in a batch.Add this suggestion to a batch that can be applied as a single commit.Applying suggestions on deleted lines is not supported.You must change the existing code in this line in order to create a valid suggestion.Outdated suggestions cannot be applied.This suggestion has been applied or marked resolved.Suggestions cannot be applied from pending reviews.Suggestions cannot be applied on multi-line comments.Suggestions cannot be applied while the pull request is queued to merge.Suggestion cannot be applied right now. Please check back later.
The default power profile on Raspberry Pi 5 may limit USB current, preventing the stable operation of touch devices and other peripherals.
- What I did
Resolve below issue.
https://forums.raspberrypi.com/viewtopic.php?t=369334#:~:text=If%20your%20Raspberry%20Pi%205%20is%20displaying,an%20SDCard**%20*%20Add%20keyboard%20and%20mouse
- How I did
I tested this on a Raspberry Pi 5 using AGL and Yocto Sato images.