diff options
| author | Vadim Mikhailov <mvp@users.noreply.github.com> | 2020-01-27 23:33:53 -0800 |
|---|---|---|
| committer | Vadim Mikhailov <mvp@users.noreply.github.com> | 2020-01-27 23:33:53 -0800 |
| commit | 6366aea0bd7dc8da863414d8d7e1ea5097617136 (patch) | |
| tree | 83f741a163ba8182c0ef93fc27dcc7bf3450223a | |
| parent | 232dcc6f6dd2fb20ef38829bb8a142929bbb639a (diff) | |
Refactor Raspberry Pi USB topology table with sub-headers
| -rw-r--r-- | README.md | 9 |
1 files changed, 5 insertions, 4 deletions
@@ -263,9 +263,10 @@ Doing so will confuse internal hub circuitry and will cause unpredictable behavi #### _Raspberry Pi turns power off on all ports, not just the one I specified_ This is limitation of Raspberry Pi hardware design. -For reference, Raspberry Pi models have following internal USB topology: -* Raspberry Pi B+,2B,3B: +For reference, supported Raspberry Pi models have following internal USB topology: + +##### Raspberry Pi B+,2B,3B * Single hub `1-1`, ports 2-5 ganged, all controlled by port `2`: @@ -274,7 +275,7 @@ For reference, Raspberry Pi models have following internal USB topology: Trying to control ports `3`,`4`,`5` will not do anything. Port `1` controls power for Ethernet+Wifi. -* Raspberry Pi 3B+: +##### Raspberry Pi 3B+ * Main hub `1-1`, all 4 ports ganged, all controlled by port `2` (turns off secondary hub ports as well): @@ -287,7 +288,7 @@ For reference, Raspberry Pi models have following internal USB topology: In other words, 2 out of total 4 ports wired outside of `3B+` support proper independent power switching. -* Raspberry Pi 4B: +##### Raspberry Pi 4B * USB2 hub `1`, 1 port, only connects hub `1-1` below. |