diff --git a/ports/mimxrt10xx/boards/feather_m7_1011/board.c b/ports/mimxrt10xx/boards/feather_m7_1011/board.c
index 3f7f3bd575..9587ea71e8 100644
--- a/ports/mimxrt10xx/boards/feather_m7_1011/board.c
+++ b/ports/mimxrt10xx/boards/feather_m7_1011/board.c
@@ -29,7 +29,8 @@
 #include "shared-bindings/microcontroller/Pin.h"
 
 // These pins should never ever be reset; doing so could interfere with basic operation.
-STATIC const mcu_pin_obj_t *_reset_forbidden_pins[] = {
+// Used in common-hal/microcontroller/Pin.c
+const mcu_pin_obj_t *mimxrt10xx_reset_forbidden_pins[] = {
     &pin_GPIO_AD_13,// SWDIO
     &pin_GPIO_AD_12,// SWCLK
 
@@ -41,25 +42,7 @@ STATIC const mcu_pin_obj_t *_reset_forbidden_pins[] = {
     &pin_GPIO_SD_08,
     &pin_GPIO_SD_07,
     &pin_GPIO_SD_06,
+    NULL,                       // Must end in NULL.
 };
 
-STATIC bool _reset_forbidden(const mcu_pin_obj_t *pin) {
-    for (size_t i = 0; i < MP_ARRAY_SIZE(_reset_forbidden_pins); i++) {
-        if (pin == _reset_forbidden_pins[i]) {
-            return true;
-        }
-    }
-    return false;
-}
-
-bool mimxrt10xx_board_reset_pin_number(const mcu_pin_obj_t *pin) {
-    if (_reset_forbidden(pin)) {
-        return true;
-    }
-
-    // Other reset variations would go here.
-
-    return false;
-}
-
 // Use the MP_WEAK supervisor/shared/board.c versions of routines not defined here.
diff --git a/ports/mimxrt10xx/boards/feather_mimxrt1011/board.c b/ports/mimxrt10xx/boards/feather_mimxrt1011/board.c
index cc93da4dd2..9587ea71e8 100644
--- a/ports/mimxrt10xx/boards/feather_mimxrt1011/board.c
+++ b/ports/mimxrt10xx/boards/feather_mimxrt1011/board.c
@@ -29,7 +29,8 @@
 #include "shared-bindings/microcontroller/Pin.h"
 
 // These pins should never ever be reset; doing so could interfere with basic operation.
-STATIC const mcu_pin_obj_t *_reset_forbidden_pins[] = {
+// Used in common-hal/microcontroller/Pin.c
+const mcu_pin_obj_t *mimxrt10xx_reset_forbidden_pins[] = {
     &pin_GPIO_AD_13,// SWDIO
     &pin_GPIO_AD_12,// SWCLK
 
@@ -41,26 +42,7 @@ STATIC const mcu_pin_obj_t *_reset_forbidden_pins[] = {
     &pin_GPIO_SD_08,
     &pin_GPIO_SD_07,
     &pin_GPIO_SD_06,
+    NULL,                       // Must end in NULL.
 };
 
-STATIC bool _reset_forbidden(const mcu_pin_obj_t *pin) {
-    for (size_t i = 0; i < MP_ARRAY_SIZE(_reset_forbidden_pins); i++) {
-        if (pin == _reset_forbidden_pins[i]) {
-            return true;
-        }
-    }
-    return false;
-}
-
-
-bool mimxrt10xx_board_reset_pin_number(const mcu_pin_obj_t *pin) {
-    if (_reset_forbidden(pin)) {
-        return true;
-    }
-
-    // Other reset variations would go here.
-
-    return false;
-}
-
 // Use the MP_WEAK supervisor/shared/board.c versions of routines not defined here.
diff --git a/ports/mimxrt10xx/boards/feather_mimxrt1062/board.c b/ports/mimxrt10xx/boards/feather_mimxrt1062/board.c
index 3a3b7f0efd..5a8de5a522 100644
--- a/ports/mimxrt10xx/boards/feather_mimxrt1062/board.c
+++ b/ports/mimxrt10xx/boards/feather_mimxrt1062/board.c
@@ -29,7 +29,8 @@
 #include "shared-bindings/microcontroller/Pin.h"
 
 // These pins should never ever be reset; doing so could interfere with basic operation.
-STATIC const mcu_pin_obj_t *_reset_forbidden_pins[] = {
+// Used in common-hal/microcontroller/Pin.c
+const mcu_pin_obj_t *mimxrt10xx_reset_forbidden_pins[] = {
     // SWD Pins
     &pin_GPIO_AD_B0_06,// SWDIO
     &pin_GPIO_AD_B0_07,// SWCLK
@@ -41,25 +42,7 @@ STATIC const mcu_pin_obj_t *_reset_forbidden_pins[] = {
     &pin_GPIO_SD_B1_09,
     &pin_GPIO_SD_B1_10,
     &pin_GPIO_SD_B1_11,
+    NULL,                       // Must end in NULL.
 };
 
-STATIC bool _reset_forbidden(const mcu_pin_obj_t *pin) {
-    for (size_t i = 0; i < MP_ARRAY_SIZE(_reset_forbidden_pins); i++) {
-        if (pin == _reset_forbidden_pins[i]) {
-            return true;
-        }
-    }
-    return false;
-}
-
-bool mimxrt10xx_board_reset_pin_number(const mcu_pin_obj_t *pin) {
-    if (_reset_forbidden(pin)) {
-        return true;
-    }
-
-    // Other reset variations would go here.
-
-    return false;
-}
-
 // Use the MP_WEAK supervisor/shared/board.c versions of routines not defined here.
diff --git a/ports/mimxrt10xx/boards/imxrt1010_evk/board.c b/ports/mimxrt10xx/boards/imxrt1010_evk/board.c
index d4cd29b645..b839ffa666 100644
--- a/ports/mimxrt10xx/boards/imxrt1010_evk/board.c
+++ b/ports/mimxrt10xx/boards/imxrt1010_evk/board.c
@@ -29,7 +29,8 @@
 #include "shared-bindings/microcontroller/Pin.h"
 
 // These pins should never ever be reset; doing so could interfere with basic operation.
-STATIC const mcu_pin_obj_t *_reset_forbidden_pins[] = {
+// Used in common-hal/microcontroller/Pin.c
+const mcu_pin_obj_t *mimxrt10xx_reset_forbidden_pins[] = {
     &pin_GPIO_AD_13, // SWDIO
     &pin_GPIO_AD_12, // SWCLK
     // FLEX flash
@@ -43,25 +44,7 @@ STATIC const mcu_pin_obj_t *_reset_forbidden_pins[] = {
     // USB Pins
     &pin_GPIO_12,
     &pin_GPIO_13,
+    NULL,                       // Must end in NULL.
 };
 
-STATIC bool _reset_forbidden(const mcu_pin_obj_t *pin) {
-    for (size_t i = 0; i < MP_ARRAY_SIZE(_reset_forbidden_pins); i++) {
-        if (pin == _reset_forbidden_pins[i]) {
-            return true;
-        }
-    }
-    return false;
-}
-
-bool mimxrt10xx_board_reset_pin_number(const mcu_pin_obj_t *pin) {
-    if (_reset_forbidden(pin)) {
-        return true;
-    }
-
-    // Other reset variations would go here.
-
-    return false;
-}
-
 // Use the MP_WEAK supervisor/shared/board.c versions of routines not defined here.
diff --git a/ports/mimxrt10xx/boards/imxrt1020_evk/board.c b/ports/mimxrt10xx/boards/imxrt1020_evk/board.c
index 64ca9c2b00..afbc0c58b5 100644
--- a/ports/mimxrt10xx/boards/imxrt1020_evk/board.c
+++ b/ports/mimxrt10xx/boards/imxrt1020_evk/board.c
@@ -29,7 +29,8 @@
 #include "shared-bindings/microcontroller/Pin.h"
 
 // These pins should never ever be reset; doing so could interfere with basic operation.
-STATIC const mcu_pin_obj_t *_reset_forbidden_pins[] = {
+// Used in common-hal/microcontroller/Pin.c
+const mcu_pin_obj_t *mimxrt10xx_reset_forbidden_pins[] = {
     // SWD Pins
     &pin_GPIO_AD_B0_00,// SWDIO
     &pin_GPIO_AD_B0_01,// SWCLK
@@ -45,25 +46,7 @@ STATIC const mcu_pin_obj_t *_reset_forbidden_pins[] = {
     // USB Pins
     &pin_GPIO_AD_B1_11,
     &pin_GPIO_AD_B1_12,
+    NULL,                       // Must end in NULL.
 };
 
-STATIC bool _reset_forbidden(const mcu_pin_obj_t *pin) {
-    for (size_t i = 0; i < MP_ARRAY_SIZE(_reset_forbidden_pins); i++) {
-        if (pin == _reset_forbidden_pins[i]) {
-            return true;
-        }
-    }
-    return false;
-}
-
-bool mimxrt10xx_board_reset_pin_number(const mcu_pin_obj_t *pin) {
-    if (_reset_forbidden(pin)) {
-        return true;
-    }
-
-    // Other reset variations would go here.
-
-    return false;
-}
-
 // Use the MP_WEAK supervisor/shared/board.c versions of routines not defined here.
diff --git a/ports/mimxrt10xx/boards/imxrt1060_evk/board.c b/ports/mimxrt10xx/boards/imxrt1060_evk/board.c
index 7406108109..f27f549c64 100644
--- a/ports/mimxrt10xx/boards/imxrt1060_evk/board.c
+++ b/ports/mimxrt10xx/boards/imxrt1060_evk/board.c
@@ -29,7 +29,8 @@
 #include "shared-bindings/microcontroller/Pin.h"
 
 // These pins should never ever be reset; doing so could interfere with basic operation.
-STATIC const mcu_pin_obj_t *_reset_forbidden_pins[] = {
+// Used in common-hal/microcontroller/Pin.c
+const mcu_pin_obj_t *mimxrt10xx_reset_forbidden_pins[] = {
     // SWD Pins
     &pin_GPIO_AD_B0_06, // SWDIO
     &pin_GPIO_AD_B0_07, // SWCLK
@@ -51,26 +52,7 @@ STATIC const mcu_pin_obj_t *_reset_forbidden_pins[] = {
     // USB Pins
     &pin_GPIO_AD_B0_01,
     &pin_GPIO_AD_B0_03,
+    NULL,                       // Must end in NULL.
 };
 
-STATIC bool _reset_forbidden(const mcu_pin_obj_t *pin) {
-    for (size_t i = 0; i < MP_ARRAY_SIZE(_reset_forbidden_pins); i++) {
-        if (pin == _reset_forbidden_pins[i]) {
-            return true;
-        }
-    }
-    return false;
-}
-
-
-bool mimxrt10xx_board_reset_pin_number(const mcu_pin_obj_t *pin) {
-    if (_reset_forbidden(pin)) {
-        return true;
-    }
-
-    // Other reset variations would go here.
-
-    return false;
-}
-
 // Use the MP_WEAK supervisor/shared/board.c versions of routines not defined here.
diff --git a/ports/mimxrt10xx/boards/metro_m7_1011/board.c b/ports/mimxrt10xx/boards/metro_m7_1011/board.c
index 8420ad4884..27cbd3eb96 100644
--- a/ports/mimxrt10xx/boards/metro_m7_1011/board.c
+++ b/ports/mimxrt10xx/boards/metro_m7_1011/board.c
@@ -29,7 +29,8 @@
 #include "shared-bindings/microcontroller/Pin.h"
 
 // These pins should never ever be reset; doing so could interfere with basic operation.
-STATIC const mcu_pin_obj_t *_reset_forbidden_pins[] = {
+// Used in common-hal/microcontroller/Pin.c
+const mcu_pin_obj_t *mimxrt10xx_reset_forbidden_pins[] = {
     // SWD Pins
     &pin_GPIO_AD_13,// SWDIO
     &pin_GPIO_AD_12,// SWCLK
@@ -42,25 +43,7 @@ STATIC const mcu_pin_obj_t *_reset_forbidden_pins[] = {
     &pin_GPIO_SD_08,
     &pin_GPIO_SD_07,
     &pin_GPIO_SD_06,
+    NULL,                       // Must end in NULL.
 };
 
-STATIC bool _reset_forbidden(const mcu_pin_obj_t *pin) {
-    for (size_t i = 0; i < MP_ARRAY_SIZE(_reset_forbidden_pins); i++) {
-        if (pin == _reset_forbidden_pins[i]) {
-            return true;
-        }
-    }
-    return false;
-}
-
-bool mimxrt10xx_board_reset_pin_number(const mcu_pin_obj_t *pin) {
-    if (_reset_forbidden(pin)) {
-        return true;
-    }
-
-    // Other reset variations would go here.
-
-    return false;
-}
-
 // Use the MP_WEAK supervisor/shared/board.c versions of routines not defined here.
diff --git a/ports/mimxrt10xx/boards/sparkfun_teensy_micromod/board.c b/ports/mimxrt10xx/boards/sparkfun_teensy_micromod/board.c
index c9042c1fe3..fda0b1d202 100644
--- a/ports/mimxrt10xx/boards/sparkfun_teensy_micromod/board.c
+++ b/ports/mimxrt10xx/boards/sparkfun_teensy_micromod/board.c
@@ -29,7 +29,8 @@
 #include "shared-bindings/microcontroller/Pin.h"
 
 // These pins should never ever be reset; doing so could interfere with basic operation.
-STATIC const mcu_pin_obj_t *_reset_forbidden_pins[] = {
+// Used in common-hal/microcontroller/Pin.c
+const mcu_pin_obj_t *mimxrt10xx_reset_forbidden_pins[] = {
     &pin_GPIO_SD_B1_06,
     &pin_GPIO_SD_B1_07,
     &pin_GPIO_SD_B1_08,
@@ -49,25 +50,7 @@ STATIC const mcu_pin_obj_t *_reset_forbidden_pins[] = {
     &pin_GPIO_AD_B0_11,
     // Data strobe needs protection despite being grounded
     &pin_GPIO_SD_B1_05,
+    NULL,                       // Must end in NULL.
 };
 
-STATIC bool _reset_forbidden(const mcu_pin_obj_t *pin) {
-    for (size_t i = 0; i < MP_ARRAY_SIZE(_reset_forbidden_pins); i++) {
-        if (pin == _reset_forbidden_pins[i]) {
-            return true;
-        }
-    }
-    return false;
-}
-
-bool mimxrt10xx_board_reset_pin_number(const mcu_pin_obj_t *pin) {
-    if (_reset_forbidden(pin)) {
-        return true;
-    }
-
-    // Other reset variations would go here.
-
-    return false;
-}
-
 // Use the MP_WEAK supervisor/shared/board.c versions of routines not defined here.
diff --git a/ports/mimxrt10xx/boards/teensy40/board.c b/ports/mimxrt10xx/boards/teensy40/board.c
index 8bb1680f00..8ece1546d7 100644
--- a/ports/mimxrt10xx/boards/teensy40/board.c
+++ b/ports/mimxrt10xx/boards/teensy40/board.c
@@ -29,7 +29,8 @@
 #include "shared-bindings/microcontroller/Pin.h"
 
 // These pins should never ever be reset; doing so could interfere with basic operation.
-STATIC const mcu_pin_obj_t *_reset_forbidden_pins[] = {
+// Used in common-hal/microcontroller/Pin.c
+const mcu_pin_obj_t *mimxrt10xx_reset_forbidden_pins[] = {
     // FLEX flash
     &pin_GPIO_SD_B1_06,
     &pin_GPIO_SD_B1_07,
@@ -50,25 +51,7 @@ STATIC const mcu_pin_obj_t *_reset_forbidden_pins[] = {
     &pin_GPIO_AD_B0_11,
     // Data strobe needs protection despite being grounded
     &pin_GPIO_SD_B1_05,
+    NULL,                       // Must end in NULL.
 };
 
-STATIC bool _reset_forbidden(const mcu_pin_obj_t *pin) {
-    for (size_t i = 0; i < MP_ARRAY_SIZE(_reset_forbidden_pins); i++) {
-        if (pin == _reset_forbidden_pins[i]) {
-            return true;
-        }
-    }
-    return false;
-}
-
-bool mimxrt10xx_board_reset_pin_number(const mcu_pin_obj_t *pin) {
-    if (_reset_forbidden(pin)) {
-        return true;
-    }
-
-    // Other reset variations would go here.
-
-    return false;
-}
-
 // Use the MP_WEAK supervisor/shared/board.c versions of routines not defined here.
diff --git a/ports/mimxrt10xx/boards/teensy41/board.c b/ports/mimxrt10xx/boards/teensy41/board.c
index 8bb1680f00..8ece1546d7 100644
--- a/ports/mimxrt10xx/boards/teensy41/board.c
+++ b/ports/mimxrt10xx/boards/teensy41/board.c
@@ -29,7 +29,8 @@
 #include "shared-bindings/microcontroller/Pin.h"
 
 // These pins should never ever be reset; doing so could interfere with basic operation.
-STATIC const mcu_pin_obj_t *_reset_forbidden_pins[] = {
+// Used in common-hal/microcontroller/Pin.c
+const mcu_pin_obj_t *mimxrt10xx_reset_forbidden_pins[] = {
     // FLEX flash
     &pin_GPIO_SD_B1_06,
     &pin_GPIO_SD_B1_07,
@@ -50,25 +51,7 @@ STATIC const mcu_pin_obj_t *_reset_forbidden_pins[] = {
     &pin_GPIO_AD_B0_11,
     // Data strobe needs protection despite being grounded
     &pin_GPIO_SD_B1_05,
+    NULL,                       // Must end in NULL.
 };
 
-STATIC bool _reset_forbidden(const mcu_pin_obj_t *pin) {
-    for (size_t i = 0; i < MP_ARRAY_SIZE(_reset_forbidden_pins); i++) {
-        if (pin == _reset_forbidden_pins[i]) {
-            return true;
-        }
-    }
-    return false;
-}
-
-bool mimxrt10xx_board_reset_pin_number(const mcu_pin_obj_t *pin) {
-    if (_reset_forbidden(pin)) {
-        return true;
-    }
-
-    // Other reset variations would go here.
-
-    return false;
-}
-
 // Use the MP_WEAK supervisor/shared/board.c versions of routines not defined here.
diff --git a/ports/mimxrt10xx/common-hal/microcontroller/Pin.c b/ports/mimxrt10xx/common-hal/microcontroller/Pin.c
index 37a0c9c1a1..e891b56a24 100644
--- a/ports/mimxrt10xx/common-hal/microcontroller/Pin.c
+++ b/ports/mimxrt10xx/common-hal/microcontroller/Pin.c
@@ -31,6 +31,22 @@
 STATIC bool claimed_pins[IOMUXC_SW_PAD_CTL_PAD_COUNT];
 STATIC bool never_reset_pins[IOMUXC_SW_PAD_CTL_PAD_COUNT];
 
+// Default is that no pins are forbidden to reset.
+MP_WEAK const mcu_pin_obj_t *mimxrt10xx_reset_forbidden_pins[] = {
+    NULL,
+};
+
+STATIC bool _reset_forbidden(const mcu_pin_obj_t *pin) {
+    const mcu_pin_obj_t **forbidden_pin = &mimxrt10xx_reset_forbidden_pins[0];
+    while (*forbidden_pin) {
+        if (pin == *forbidden_pin) {
+            return true;
+        }
+        forbidden_pin++;
+    }
+    return false;
+}
+
 // There are two numbering systems used here:
 // IOMUXC index, used for iterating through pins and accessing reset information,
 // and GPIO port and number, used to store claimed and reset tagging. The two number
@@ -55,10 +71,15 @@ MP_WEAK bool mimxrt10xx_board_reset_pin_number(const mcu_pin_obj_t *pin) {
 // Since i.MX pins need extra register and reset information to reset properly,
 // resetting pins by number alone has been removed.
 void common_hal_reset_pin(const mcu_pin_obj_t *pin) {
+    return;
     if (pin == NULL) {
         return;
     }
 
+    if (_reset_forbidden(pin)) {
+        return;
+    }
+
     // Give the board a chance to reset the pin in a particular way, or not reset it at all.
     if (mimxrt10xx_board_reset_pin_number(pin)) {
         return;
diff --git a/ports/mimxrt10xx/common-hal/microcontroller/Pin.h b/ports/mimxrt10xx/common-hal/microcontroller/Pin.h
index c519d468cb..1bfbe41a18 100644
--- a/ports/mimxrt10xx/common-hal/microcontroller/Pin.h
+++ b/ports/mimxrt10xx/common-hal/microcontroller/Pin.h
@@ -35,6 +35,9 @@
 void reset_all_pins(void);
 void claim_pin(const mcu_pin_obj_t *pin);
 
+// List of pins that should never be reset.
+extern const mcu_pin_obj_t *mimxrt10xx_reset_forbidden_pins[];
+
 // Allow the board to reset a pin in a board-specific way. This can be used
 // for LEDs or enable pins to put them in a state beside the default pull-up,
 // or to simply not reset the pin at all.