Don't use TinyUSB BSP

I guess the BSP is only meant for demos, and doesn't play nice with a
larger project.  Notably, board_init() re-initializes the UART hardware,
causing weird glitches.

1 files changed, 4 insertions, 0 deletions

diff --git a/notes.md b/notes.md
index 5ecb152..362445f 100644
--- a/notes.md
+++ b/notes.md
@@ -149,3 +149,7 @@ IDK about HDMI compression yet, but naively uncompressed we're looking
 at wanting to shove ~60 MB/s (480 Mb/s).
 
 Compression is an optional feature introduced in HDMI 2.1 :(
+
+----
+
+PIO-based USB needs the system clock to be a multiple of 120mhz