diff --git a/drivers/netdev_ieee802154/netdev_ieee802154.c b/drivers/netdev_ieee802154/netdev_ieee802154.c
index 623604f39027..926d6ca3c3bb 100644
--- a/drivers/netdev_ieee802154/netdev_ieee802154.c
+++ b/drivers/netdev_ieee802154/netdev_ieee802154.c
@@ -71,6 +71,25 @@ void netdev_ieee802154_reset(netdev_ieee802154_t *dev)
     dev->netdev.driver->set(&dev->netdev, NETOPT_NID, &dev->pan, sizeof(dev->pan));
 }
 
+static inline uint16_t _get_ieee802154_pdu(netdev_ieee802154_t *dev)
+{
+    uint8_t type;
+    int res = dev->netdev.driver->get(&dev->netdev, NETOPT_IEEE802154_PHY, &type, sizeof(type));
+
+    if (res < 0) {
+        return IEEE802154_FRAME_LEN_MAX;
+    }
+
+    switch (type) {
+    case IEEE802154_PHY_MR_OQPSK:
+    case IEEE802154_PHY_MR_OFDM:
+    case IEEE802154_PHY_MR_FSK:
+        return IEEE802154G_FRAME_LEN_MAX;
+    default:
+        return IEEE802154_FRAME_LEN_MAX;
+    }
+}
+
 int netdev_ieee802154_get(netdev_ieee802154_t *dev, netopt_t opt, void *value,
                            size_t max_len)
 {
@@ -152,9 +171,10 @@ int netdev_ieee802154_get(netdev_ieee802154_t *dev, netopt_t opt, void *value,
 #endif
         case NETOPT_MAX_PDU_SIZE:
             assert(max_len >= sizeof(int16_t));
-            *((uint16_t *)value) = (IEEE802154_FRAME_LEN_MAX -
-                                  IEEE802154_MAX_HDR_LEN) -
-                                  IEEE802154_FCS_LEN;
+
+            *((uint16_t *)value) = (_get_ieee802154_pdu(dev)
+                                    - IEEE802154_MAX_HDR_LEN)
+                                    - IEEE802154_FCS_LEN;
             res = sizeof(uint16_t);
             break;
         default:
diff --git a/sys/include/net/ieee802154.h b/sys/include/net/ieee802154.h
index 19da9c5d6424..00603381f0eb 100644
--- a/sys/include/net/ieee802154.h
+++ b/sys/include/net/ieee802154.h
@@ -94,7 +94,21 @@ extern "C" {
 #define IEEE802154_CHANNEL_MAX          (26U)   /**< Maximum channel for 2.4 GHz band */
 /** @} */
 
-#define IEEE802154_FRAME_LEN_MAX        (127U)  /**< maximum frame length */
+#define IEEE802154_FRAME_LEN_MAX        (127U)  /**< maximum 802.15.4 frame length */
+#define IEEE802154G_FRAME_LEN_MAX      (2047U)  /**< maximum 802.15.4g-2012 frame length */
+
+/**
+ * @brief   802.15.4 PHY modes
+ */
+enum {
+    IEEE802154_PHY_DISABLED,        /**< PHY disabled, no mode selected */
+    IEEE802154_PHY_BPSK,            /**< Binary Phase Shift Keying */
+    IEEE802154_PHY_ASK,             /**< Amplitude-Shift Keying */
+    IEEE802154_PHY_OQPSK,           /**< Offset Quadrature Phase-Shift Keying */
+    IEEE802154_PHY_MR_OQPSK,        /**< Multi-Rate Offset Quadrature Phase-Shift Keying */
+    IEEE802154_PHY_MR_OFDM,         /**< Multi-Rate Orthogonal Frequency-Division Multiplexing */
+    IEEE802154_PHY_MR_FSK           /**< Multi-Rate Frequency Shift Keying */
+};
 
 /**
  * @brief   Special address definitions
diff --git a/sys/include/net/netopt.h b/sys/include/net/netopt.h
index b1739646c32d..1c3bced33151 100644
--- a/sys/include/net/netopt.h
+++ b/sys/include/net/netopt.h
@@ -651,6 +651,11 @@ typedef enum {
      */
     NETOPT_LORAWAN_MIN_RX_SYMBOL,
 
+    /**
+     * @brief   (uint8_t) 802.15.4 PHY mode
+     */
+    NETOPT_IEEE802154_PHY,
+
     /**
      * @brief   (uint8_t*) phy layer syncword
      */