diff --git a/.gitmodules b/.gitmodules
index f7f916ea..7d8f7992 100644
--- a/.gitmodules
+++ b/.gitmodules
@@ -1019,3 +1019,6 @@
 [submodule "libraries/drivers/hx711"]
 	path = libraries/drivers/hx711
 	url = https://github.com/adafruit/Adafruit_CircuitPython_HX711.git
+[submodule "libraries/helpers/pio_uart"]
+	path = libraries/helpers/pio_uart
+	url = https://github.com/adafruit/Adafruit_CircuitPython_PIO_UART.git
diff --git a/docs/drivers.rst b/docs/drivers.rst
index f41295ff..1ce34043 100644
--- a/docs/drivers.rst
+++ b/docs/drivers.rst
@@ -218,7 +218,8 @@ Miscellaneous Helpers
     NeoKey <https://docs.circuitpython.org/projects/neokey/en/latest/>
     OneWire <https://docs.circuitpython.org/projects/onewire/en/latest/>
     Pastebin services <https://docs.circuitpython.org/projects/pastebin/en/latest/>
-    PIOASM converter for RP2040 boards <https://docs.circuitpython.org/projects/pioasm/en/latest/>
+    PIOASM converter for RP2 boards <https://docs.circuitpython.org/projects/pioasm/en/latest/>
+    PIO UART <https://docs.circuitpython.org/projects/pio_uart/en/latest/>
     Prompt Toolkit <https://docs.circuitpython.org/projects/prompt_toolkit/en/latest/>
     Radial Controller <https://docs.circuitpython.org/projects/radial-controller/en/latest/>
     SD Card <https://docs.circuitpython.org/projects/sd/en/latest/>
diff --git a/libraries/helpers/pio_uart b/libraries/helpers/pio_uart
new file mode 160000
index 00000000..07ca6196
--- /dev/null
+++ b/libraries/helpers/pio_uart
@@ -0,0 +1 @@
+Subproject commit 07ca6196a32eec77fa6dbd344d5fcc8cf1df5373