diff --git a/lib/tinyusb b/lib/tinyusb
index 8b2c822557..218b80e63a 160000
--- a/lib/tinyusb
+++ b/lib/tinyusb
@@ -1 +1 @@
-Subproject commit 8b2c82255750488232eae72f3d5dcbacfd6227f3
+Subproject commit 218b80e63ab6ff87c1851e403f08b3d716d68f5e
diff --git a/ports/atmel-samd/mpconfigport.mk b/ports/atmel-samd/mpconfigport.mk
index 1929e146d3..17e3995bf5 100644
--- a/ports/atmel-samd/mpconfigport.mk
+++ b/ports/atmel-samd/mpconfigport.mk
@@ -29,6 +29,10 @@ ifndef CIRCUITPY_AUDIOMP3
 CIRCUITPY_AUDIOMP3 = 0
 endif
 
+ifndef CIRCUITPY_BUILTINS_POW3
+CIRCUITPY_BUILTINS_POW3 = 0
+endif
+
 ifndef CIRCUITPY_FREQUENCYIO
 CIRCUITPY_FREQUENCYIO = 0
 endif
diff --git a/py/circuitpy_mpconfig.h b/py/circuitpy_mpconfig.h
index 85e152670a..28fd4095c4 100644
--- a/py/circuitpy_mpconfig.h
+++ b/py/circuitpy_mpconfig.h
@@ -184,7 +184,7 @@ typedef long mp_off_t;
 // Turning off FULL_BUILD removes some functionality to reduce flash size on tiny SAMD21s
 #define MICROPY_BUILTIN_METHOD_CHECK_SELF_ARG (CIRCUITPY_FULL_BUILD)
 #define MICROPY_CPYTHON_COMPAT                (CIRCUITPY_FULL_BUILD)
-#define MICROPY_PY_BUILTINS_POW3              (CIRCUITPY_FULL_BUILD)
+#define MICROPY_PY_BUILTINS_POW3              (CIRCUITPY_BUILTINS_POW3)
 #define MICROPY_COMP_FSTRING_LITERAL          (MICROPY_CPYTHON_COMPAT)
 #define MICROPY_MODULE_WEAK_LINKS             (0)
 #define MICROPY_PY_ALL_SPECIAL_METHODS        (CIRCUITPY_FULL_BUILD)
diff --git a/py/circuitpy_mpconfig.mk b/py/circuitpy_mpconfig.mk
index a6aabec33d..08e7737180 100644
--- a/py/circuitpy_mpconfig.mk
+++ b/py/circuitpy_mpconfig.mk
@@ -90,6 +90,9 @@ CFLAGS += -DCIRCUITPY_BLEIO=$(CIRCUITPY_BLEIO)
 CIRCUITPY_BOARD ?= 1
 CFLAGS += -DCIRCUITPY_BOARD=$(CIRCUITPY_BOARD)
 
+CIRCUITPY_BUILTINS_POW3 ?= $(CIRCUITPY_FULL_BUILD)
+CFLAGS += -DCIRCUITPY_BUILTINS_POW3=$(CIRCUITPY_BUILTINS_POW3)
+
 CIRCUITPY_BUSIO ?= 1
 CFLAGS += -DCIRCUITPY_BUSIO=$(CIRCUITPY_BUSIO)