diff --git a/os/hal/platforms/LPC214x/serial_lld.c b/os/hal/platforms/LPC214x/serial_lld.c
index d79ba22d2..21c39f674 100644
--- a/os/hal/platforms/LPC214x/serial_lld.c
+++ b/os/hal/platforms/LPC214x/serial_lld.c
@@ -18,8 +18,9 @@
 */
 
 /**
- * @file LPC214x/serial_lld.c
- * @brief LPC214x low level serial driver code.
+ * @file    LPC214x/serial_lld.c
+ * @brief   LPC214x low level serial driver code.
+ *
  * @addtogroup LPC214x_SERIAL
  * @{
  */
@@ -47,7 +48,7 @@ SerialDriver SD2;
 /* Driver local variables.                                                   */
 /*===========================================================================*/
 
-/** @brief Driver default configuration.*/
+/** @brief  Driver default configuration.*/
 static const SerialConfig default_config = {
   SERIAL_DEFAULT_BITRATE,
   LCR_WL8 | LCR_STOP1 | LCR_NOPARITY,
@@ -59,19 +60,20 @@ static const SerialConfig default_config = {
 /*===========================================================================*/
 
 /**
- * @brief UART initialization.
+ * @brief   UART initialization.
  *
- * @param[in] sdp communication channel associated to the UART
+ * @param[in] sdp       communication channel associated to the UART
+ * @param[in] config    the architecture-dependent serial driver configuration
  */
-static void uart_init(SerialDriver *sdp) {
+static void uart_init(SerialDriver *sdp, const SerialConfig *config) {
   UART *u = sdp->uart;
 
-  uint32_t div = PCLK / (sdp->config->sc_speed << 4);
-  u->UART_LCR = sdp->config->sc_lcr | LCR_DLAB;
+  uint32_t div = PCLK / (config->sc_speed << 4);
+  u->UART_LCR = config->sc_lcr | LCR_DLAB;
   u->UART_DLL = div;
   u->UART_DLM = div >> 8;
-  u->UART_LCR = sdp->config->sc_lcr;
-  u->UART_FCR = FCR_ENABLE | FCR_RXRESET | FCR_TXRESET | sdp->config->sc_fcr;
+  u->UART_LCR = config->sc_lcr;
+  u->UART_FCR = FCR_ENABLE | FCR_RXRESET | FCR_TXRESET | config->sc_fcr;
   u->UART_ACR = 0;
   u->UART_FDR = 0x10;
   u->UART_TER = TER_ENABLE;
@@ -79,9 +81,9 @@ static void uart_init(SerialDriver *sdp) {
 }
 
 /**
- * @brief UART de-initialization.
+ * @brief   UART de-initialization.
  *
- * @param[in] u pointer to an UART I/O block
+ * @param[in] u         pointer to an UART I/O block
  */
 static void uart_deinit(UART *u) {
 
@@ -97,10 +99,10 @@ static void uart_deinit(UART *u) {
 }
 
 /**
- * @brief Error handling routine.
+ * @brief   Error handling routine.
  *
- * @param[in] sdp communication channel associated to the UART
- * @param[in] err UART LSR register value
+ * @param[in] sdp       communication channel associated to the UART
+ * @param[in] err       UART LSR register value
  */
 static void set_error(SerialDriver *sdp, IOREG32 err) {
   sdflags_t sts = 0;
@@ -122,11 +124,12 @@ static void set_error(SerialDriver *sdp, IOREG32 err) {
 __attribute__((noinline))
 #endif
 /**
- * @brief Common IRQ handler.
- * @param[in] u pointer to an UART I/O block
- * @param[in] sdp communication channel associated to the UART
- * @note Tries hard to clear all the pending interrupt sources, we dont want to
- *       go through the whole ISR and have another interrupt soon after.
+ * @brief   Common IRQ handler.
+ * @note    Tries hard to clear all the pending interrupt sources, we dont want
+ *          to go through the whole ISR and have another interrupt soon after.
+ *
+ * @param[in] u         pointer to an UART I/O block
+ * @param[in] sdp       communication channel associated to the UART
  */
 static void serve_interrupt(SerialDriver *sdp) {
   UART *u = sdp->uart;
@@ -179,7 +182,7 @@ static void serve_interrupt(SerialDriver *sdp) {
 }
 
 /**
- * @brief Attempts a TX FIFO preload.
+ * @brief   Attempts a TX FIFO preload.
  */
 static void preload(SerialDriver *sdp) {
   UART *u = sdp->uart;
@@ -199,7 +202,7 @@ static void preload(SerialDriver *sdp) {
 }
 
 /**
- * @brief Driver SD1 output notification.
+ * @brief   Driver SD1 output notification.
  */
 #if USE_LPC214x_UART0 || defined(__DOXYGEN__)
 static void notify1(void) {
@@ -209,7 +212,7 @@ static void notify1(void) {
 #endif
 
 /**
- * @brief Driver SD2 output notification.
+ * @brief   Driver SD2 output notification.
  */
 #if USE_LPC214x_UART1 || defined(__DOXYGEN__)
 static void notify2(void) {
@@ -223,7 +226,7 @@ static void notify2(void) {
 /*===========================================================================*/
 
 /**
- * @brief UART0 IRQ handler.
+ * @brief   UART0 IRQ handler.
  */
 #if USE_LPC214x_UART0 || defined(__DOXYGEN__)
 CH_IRQ_HANDLER(UART0IrqHandler) {
@@ -238,7 +241,7 @@ CH_IRQ_HANDLER(UART0IrqHandler) {
 #endif
 
 /**
- * @brief UART1 IRQ handler.
+ * @brief   UART1 IRQ handler.
  */
 #if USE_LPC214x_UART1 || defined(__DOXYGEN__)
 CH_IRQ_HANDLER(UART1IrqHandler) {
@@ -257,7 +260,7 @@ CH_IRQ_HANDLER(UART1IrqHandler) {
 /*===========================================================================*/
 
 /**
- * Low level serial driver initialization.
+ * @brief   Low level serial driver initialization.
  */
 void sd_lld_init(void) {
 
@@ -274,14 +277,17 @@ void sd_lld_init(void) {
 }
 
 /**
- * @brief Low level serial driver configuration and (re)start.
+ * @brief   Low level serial driver configuration and (re)start.
  *
- * @param[in] sdp pointer to a @p SerialDriver object
+ * @param[in] sdp       pointer to a @p SerialDriver object
+ * @param[in] config    the architecture-dependent serial driver configuration.
+ *                      If this parameter is set to @p NULL then a default
+ *                      configuration is used.
  */
-void sd_lld_start(SerialDriver *sdp) {
+void sd_lld_start(SerialDriver *sdp, const SerialConfig *config) {
 
-  if (sdp->config == NULL)
-    sdp->config = &default_config;
+  if (config == NULL)
+    config = &default_config;
 
   if (sdp->state == SD_STOP) {
 #if USE_LPC214x_UART0
@@ -297,15 +303,15 @@ void sd_lld_start(SerialDriver *sdp) {
     }
 #endif
   }
-  uart_init(sdp);
+  uart_init(sdp, config);
 }
 
 /**
- * @brief Low level serial driver stop.
+ * @brief   Low level serial driver stop.
  * @details De-initializes the UART, stops the associated clock, resets the
  *          interrupt vector.
  *
- * @param[in] sdp pointer to a @p SerialDriver object
+ * @param[in] sdp       pointer to a @p SerialDriver object
  */
 void sd_lld_stop(SerialDriver *sdp) {
 
diff --git a/os/hal/platforms/LPC214x/serial_lld.h b/os/hal/platforms/LPC214x/serial_lld.h
index 6d47f9d95..a5cea7538 100644
--- a/os/hal/platforms/LPC214x/serial_lld.h
+++ b/os/hal/platforms/LPC214x/serial_lld.h
@@ -18,8 +18,9 @@
 */
 
 /**
- * @file LPC214x/serial_lld.h
- * @brief LPC214x low level serial driver header.
+ * @file    LPC214x/serial_lld.h
+ * @brief   LPC214x low level serial driver header.
+ *
  * @addtogroup LPC214x_SERIAL
  * @{
  */
@@ -38,45 +39,45 @@
 /*===========================================================================*/
 
 /**
- * @brief UART0 driver enable switch.
+ * @brief   UART0 driver enable switch.
  * @details If set to @p TRUE the support for UART0 is included.
- * @note The default is @p TRUE .
+ * @note    The default is @p TRUE .
  */
 #if !defined(USE_LPC214x_UART0) || defined(__DOXYGEN__)
 #define USE_LPC214x_UART0           TRUE
 #endif
 
 /**
- * @brief UART1 driver enable switch.
+ * @brief   UART1 driver enable switch.
  * @details If set to @p TRUE the support for UART1 is included.
- * @note The default is @p TRUE.
+ * @note    The default is @p TRUE.
  */
 #if !defined(USE_LPC214x_UART1) || defined(__DOXYGEN__)
 #define USE_LPC214x_UART1           TRUE
 #endif
 
 /**
- * @brief FIFO preload parameter.
+ * @brief   FIFO preload parameter.
  * @details Configuration parameter, this values defines how many bytes are
- * preloaded in the HW transmit FIFO for each interrupt, the maximum value is
- * 16 the minimum is 1.
- * @note An high value reduces the number of interrupts generated but can
- *       also increase the worst case interrupt response time because the
- *       preload loops.
+ *          preloaded in the HW transmit FIFO for each interrupt, the maximum
+ *          value is 16 the minimum is 1.
+ * @note    An high value reduces the number of interrupts generated but can
+ *          also increase the worst case interrupt response time because the
+ *          preload loops.
  */
 #if !defined(LPC214x_UART_FIFO_PRELOAD) || defined(__DOXYGEN__)
 #define LPC214x_UART_FIFO_PRELOAD   16
 #endif
 
 /**
- * @brief UART0 interrupt priority level setting.
+ * @brief   UART0 interrupt priority level setting.
  */
 #if !defined(LPC214x_UART0_PRIORITY) || defined(__DOXYGEN__)
 #define LPC214x_UART0_PRIORITY      1
 #endif
 
 /**
- * @brief UART1 interrupt priority level setting.
+ * @brief   UART1 interrupt priority level setting.
  */
 #if !defined(LPC214x_UART1_PRIORITY) || defined(__DOXYGEN__)
 #define LPC214x_UART1_PRIORITY      2
@@ -95,12 +96,12 @@
 /*===========================================================================*/
 
 /**
- * @brief Serial Driver condition flags type.
+ * @brief   Serial Driver condition flags type.
  */
 typedef uint32_t sdflags_t;
 
 /**
- * @brief LPC214x Serial Driver configuration structure.
+ * @brief   LPC214x Serial Driver configuration structure.
  * @details An instance of this structure must be passed to @p sdStart()
  *          in order to configure and start a serial driver operations.
  */
@@ -126,8 +127,6 @@ typedef struct {
   _base_asynchronous_channel_data                                           \
   /* Driver state.*/                                                        \
   sdstate_t                 state;                                          \
-  /* Current configuration data.*/                                          \
-  const SerialConfig        *config;                                        \
   /* Input queue.*/                                                         \
   InputQueue                iqueue;                                         \
   /* Output queue.*/                                                        \
@@ -163,7 +162,7 @@ extern SerialDriver SD2;
 extern "C" {
 #endif
   void sd_lld_init(void);
-  void sd_lld_start(SerialDriver *sdp);
+  void sd_lld_start(SerialDriver *sdp, const SerialConfig *config);
   void sd_lld_stop(SerialDriver *sdp);
 #ifdef __cplusplus
 }
diff --git a/os/hal/platforms/MSP430/serial_lld.c b/os/hal/platforms/MSP430/serial_lld.c
index 8186813fb..4ab12a872 100644
--- a/os/hal/platforms/MSP430/serial_lld.c
+++ b/os/hal/platforms/MSP430/serial_lld.c
@@ -264,18 +264,18 @@ void sd_lld_init(void) {
  */
 void sd_lld_start(SerialDriver *sdp, const SerialConfig *config) {
 
-  if (sdp->config == NULL)
-    sdp->config = &default_config;
+  if (config == NULL)
+    config = &default_config;
 
 #if USE_MSP430_USART0
   if (&SD1 == sdp) {
-    usart0_init(sdp->config);
+    usart0_init(config);
     return;
   }
 #endif
 #if USE_MSP430_USART1
   if (&SD2 == sdp) {
-    usart1_init(sdp->config);
+    usart1_init(config);
     return;
   }
 #endif