Update Rasperry Pi 4B USB topology note

Apparently, controlling only port 4 is not enough to actually turn power off for RPi4B.
Instead, note that all 4 ports should be turned off. Closes #233.
This commit is contained in:
Vadim Mikhailov
2020-04-24 17:40:21 -07:00
parent b73213dd6d
commit 7bf80a08d1

View File

@@ -311,13 +311,13 @@ to vl805 00137ac or later to make power switching work on RPi 4B.
* USB2 hub `1`, 1 port, only connects hub `1-1` below.
* USB2 hub `1-1`, 4 ports ganged, dual to USB3 hub `2` below, all ports controlled by port 4:
* USB2 hub `1-1`, 4 ports ganged, dual to USB3 hub `2` below:
uhubctl -l 1-1 -p 4 -a 0
uhubctl -l 1-1 -a 0
* USB3 hub `2`, 4 ports ganged, dual to USB2 hub `1-1` above, all ports controlled by port 4:
* USB3 hub `2`, 4 ports ganged, dual to USB2 hub `1-1` above:
uhubctl -l 2 -p 4 -a 0
uhubctl -l 2 -a 0
* USB2 hub `3`, 1 port, OTG controller: