diff --git a/ports/atmel-samd/common-hal/digitalio/DigitalInOut.c b/ports/atmel-samd/common-hal/digitalio/DigitalInOut.c
index 40637bef4b..dee927ce88 100644
--- a/ports/atmel-samd/common-hal/digitalio/DigitalInOut.c
+++ b/ports/atmel-samd/common-hal/digitalio/DigitalInOut.c
@@ -187,3 +187,30 @@ digitalio_pull_t common_hal_digitalio_digitalinout_get_pull(
         }
     }
 }
+
+bool common_hal_digitalio_has_reg_op(digitalinout_reg_op_t op) {
+    return true;
+}
+
+volatile uint32_t *common_hal_digitalio_digitalinout_get_reg(digitalio_digitalinout_obj_t *self, digitalinout_reg_op_t op, uint32_t *mask) {
+    const uint8_t pin = self->pin->number;
+    int port = GPIO_PORT(pin);
+
+    *mask = 1u << GPIO_PIN(pin);
+
+
+    switch (op) {
+        case DIGITALINOUT_REG_READ:
+            return (volatile uint32_t *)&PORT->Group[port].IN.reg;
+        case DIGITALINOUT_REG_WRITE:
+            return &PORT->Group[port].OUT.reg;
+        case DIGITALINOUT_REG_SET:
+            return &PORT->Group[port].OUTSET.reg;
+        case DIGITALINOUT_REG_RESET:
+            return &PORT->Group[port].OUTCLR.reg;
+        case DIGITALINOUT_REG_TOGGLE:
+            return &PORT->Group[port].OUTTGL.reg;
+        default:
+            return NULL;
+    }
+}
diff --git a/ports/raspberrypi/common-hal/digitalio/DigitalInOut.c b/ports/raspberrypi/common-hal/digitalio/DigitalInOut.c
index 22a61afa3f..a8a5a6b4d9 100644
--- a/ports/raspberrypi/common-hal/digitalio/DigitalInOut.c
+++ b/ports/raspberrypi/common-hal/digitalio/DigitalInOut.c
@@ -164,3 +164,28 @@ digitalio_pull_t common_hal_digitalio_digitalinout_get_pull(
     }
     return PULL_NONE;
 }
+
+bool common_hal_digitalio_has_reg_op(digitalinout_reg_op_t op) {
+    return true;
+}
+
+volatile uint32_t *common_hal_digitalio_digitalinout_get_reg(digitalio_digitalinout_obj_t *self, digitalinout_reg_op_t op, uint32_t *mask) {
+    const uint8_t pin = self->pin->number;
+
+    *mask = 1u << pin;
+
+    switch (op) {
+        case DIGITALINOUT_REG_READ:
+            return (volatile uint32_t *)&sio_hw->gpio_in;
+        case DIGITALINOUT_REG_WRITE:
+            return &sio_hw->gpio_out;
+        case DIGITALINOUT_REG_SET:
+            return &sio_hw->gpio_set;
+        case DIGITALINOUT_REG_RESET:
+            return &sio_hw->gpio_clr;
+        case DIGITALINOUT_REG_TOGGLE:
+            return &sio_hw->gpio_togl;
+        default:
+            return NULL;
+    }
+}
diff --git a/shared-bindings/digitalio/DigitalInOut.h b/shared-bindings/digitalio/DigitalInOut.h
index ebc94fa1a6..b6edbc63aa 100644
--- a/shared-bindings/digitalio/DigitalInOut.h
+++ b/shared-bindings/digitalio/DigitalInOut.h
@@ -41,6 +41,14 @@ typedef enum {
     DIGITALINOUT_INPUT_ONLY
 } digitalinout_result_t;
 
+typedef enum {
+    DIGITALINOUT_REG_READ,
+    DIGITALINOUT_REG_WRITE,
+    DIGITALINOUT_REG_SET,
+    DIGITALINOUT_REG_RESET,
+    DIGITALINOUT_REG_TOGGLE,
+} digitalinout_reg_op_t;
+
 digitalinout_result_t common_hal_digitalio_digitalinout_construct(digitalio_digitalinout_obj_t *self, const mcu_pin_obj_t *pin);
 void common_hal_digitalio_digitalinout_deinit(digitalio_digitalinout_obj_t *self);
 bool common_hal_digitalio_digitalinout_deinited(digitalio_digitalinout_obj_t *self);
@@ -56,4 +64,7 @@ digitalio_pull_t common_hal_digitalio_digitalinout_get_pull(digitalio_digitalino
 void common_hal_digitalio_digitalinout_never_reset(digitalio_digitalinout_obj_t *self);
 digitalio_digitalinout_obj_t *assert_digitalinout(mp_obj_t obj);
 
+volatile uint32_t *common_hal_digitalio_digitalinout_get_reg(digitalio_digitalinout_obj_t *self, digitalinout_reg_op_t op, uint32_t *mask);
+bool common_hal_digitalio_has_reg_op(digitalinout_reg_op_t op);
+
 #endif // MICROPY_INCLUDED_SHARED_BINDINGS_DIGITALIO_DIGITALINOUT_H