diff --git a/cpu/efm32/include/periph_cpu.h b/cpu/efm32/include/periph_cpu.h
index a024187215..ca52b522f6 100644
--- a/cpu/efm32/include/periph_cpu.h
+++ b/cpu/efm32/include/periph_cpu.h
@@ -376,6 +376,46 @@ typedef struct {
 /**
  * @brief   UART device configuration.
  */
+#ifndef DOXYGEN
+/**
+ * @brief   Override parity values
+ * @{
+ */
+#define HAVE_UART_PARITY_T
+typedef enum {
+   UART_PARITY_NONE = 0,
+   UART_PARITY_ODD = 1,
+   UART_PARITY_EVEN = 2,
+   UART_PARITY_MARK = 3,
+   UART_PARITY_SPACE = 4,
+} uart_parity_t;
+/** @} */
+
+/**
+ * @brief   Override data bits length values
+ * @{
+ */
+#define HAVE_UART_DATA_BITS_T
+typedef enum {
+    UART_DATA_BITS_5 = 5,
+    UART_DATA_BITS_6 = 6,
+    UART_DATA_BITS_7 = 7,
+    UART_DATA_BITS_8 = 8,
+} uart_data_bits_t;
+/** @} */
+
+/**
+ * @brief   Override stop bits length values
+ * @{
+ */
+#define HAVE_UART_STOP_BITS_T
+typedef enum {
+   UART_STOP_BITS_1 = 2,
+   UART_STOP_BITS_2 = 4,
+} uart_stop_bits_t;
+/** @} */
+#endif /* ndef DOXYGEN */
+
 typedef struct {
     void *dev;              /**< UART, USART or LEUART device used */
     gpio_t rx_pin;          /**< pin used for RX */
diff --git a/cpu/efm32/periph/uart.c b/cpu/efm32/periph/uart.c
index 8d0d5f72e1..17f428400c 100644
--- a/cpu/efm32/periph/uart.c
+++ b/cpu/efm32/periph/uart.c
@@ -154,6 +154,42 @@ int uart_init(uart_t dev, uint32_t baudrate, uart_rx_cb_t rx_cb, void *arg)
     return 0;
 }
 
+#ifdef MODULE_PERIPH_UART_MODECFG
+int uart_mode(uart_t dev, uart_data_bits_t data_bits, uart_parity_t parity,
+              uart_stop_bits_t stop_bits)
+{
+    if (parity == UART_PARITY_MARK || parity == UART_PARITY_SPACE) {
+        return UART_NOMODE;
+    }
+
+#ifdef USE_LEUART
+    if (_is_usart(dev)) {
+#endif
+        USART_TypeDef *uart = (USART_TypeDef *) uart_config[dev].dev;
+
+        USART_FrameSet(uart,
+                       USART_DataBits2Def(data_bits),
+                       USART_StopBits2Def(stop_bits),
+                       USART_Parity2Def(parity));
+#ifdef USE_LEUART
+    } else {
+        if (data_bits != UART_DATA_BITS_8) {
+            return UART_NOMODE;
+        }
+
+        LEUART_TypeDef *leuart = (LEUART_TypeDef *) uart_config[dev].dev;
+
+        LEUART_FrameSet(leuart,
+                        LEUART_DataBits2Def(data_bits),
+                        LEUART_StopBits2Def(stop_bits),
+                        LEUART_Parity2Def(parity));
+    }
+#endif
+
+    return UART_OK;
+}
+#endif
+
 void uart_write(uart_t dev, const uint8_t *data, size_t len)
 {
 #ifdef USE_LEUART