diff --git a/docs/Doxyfile b/docs/Doxyfile
index 468ab580e..1ec769657 100644
--- a/docs/Doxyfile
+++ b/docs/Doxyfile
@@ -31,7 +31,7 @@ PROJECT_NAME           = ChibiOS/RT
 # This could be handy for archiving the generated documentation or 
 # if some version control system is used.
 
-PROJECT_NUMBER         = 2.1.3
+PROJECT_NUMBER         = 2.1.4
 
 # The OUTPUT_DIRECTORY tag is used to specify the (relative or absolute) 
 # base path where the generated documentation will be put. 
diff --git a/os/hal/platforms/LPC11xx/platform.dox b/os/hal/platforms/LPC11xx/platform.dox
index fb8493659..19dd542ae 100644
--- a/os/hal/platforms/LPC11xx/platform.dox
+++ b/os/hal/platforms/LPC11xx/platform.dox
@@ -95,6 +95,7 @@
  * - Clock stop for reduced power usage when the driver is in stop state.
  * - Each SSP can be independently enabled and programmed. Unused
  *   peripherals are left in low power mode.
+ * - Fully interrupt driven.
  * - Programmable interrupt priority levels for each SSP.
  * .
  * @ingroup LPC11xx
diff --git a/os/hal/platforms/LPC13xx/platform.dox b/os/hal/platforms/LPC13xx/platform.dox
index cb04828dc..7b1e09a60 100644
--- a/os/hal/platforms/LPC13xx/platform.dox
+++ b/os/hal/platforms/LPC13xx/platform.dox
@@ -95,6 +95,7 @@
  * - Clock stop for reduced power usage when the driver is in stop state.
  * - Each SSP can be independently enabled and programmed. Unused
  *   peripherals are left in low power mode.
+ * - Fully interrupt driven.
  * - Programmable interrupt priority levels for each SSP.
  * .
  * @ingroup LPC13xx
diff --git a/os/hal/platforms/STM8/platform.dox b/os/hal/platforms/STM8/platform.dox
index 2b6e34f59..c71063910 100644
--- a/os/hal/platforms/STM8/platform.dox
+++ b/os/hal/platforms/STM8/platform.dox
@@ -18,7 +18,7 @@
 */
 
 /**
- * @defgroup STM8_DRIVERS STM8x Drivers
+ * @defgroup STM8 STM8x Drivers
  * @details This section describes all the supported drivers on the STM8S and
  *          STM8A platforms and the implementation details of the single
  *          drivers.
@@ -37,7 +37,7 @@
  * - Clock tree initialization.
  * - Clock source selection.
  * .
- * @ingroup STM8_DRIVERS
+ * @ingroup STM8
  */
 
 /**
@@ -81,7 +81,26 @@
  * - Bus/group writing is not atomic.
  * - Pad/group mode setup is not atomic.
  * .
- * @ingroup STM8_DRIVERS
+ * @ingroup STM8
+ */
+
+/**
+ * @defgroup STM8_SPI STM8 SPI Support
+ * @details The SPI driver supports the STM8 SPI peripheral in an interrupt
+ *          driven implementation.
+ * @note    Being the SPI a fast peripheral, much care must be taken to
+ *          not saturate the CPU bandwidth with an excessive IRQ rate. The
+ *          maximum transfer bit rate is likely limited by the IRQ
+ *          handling.
+ *
+ * @section stm8_spi_1 Supported HW resources
+ * - SPI.
+ * .
+ * @section stm8_spi_2 STM8 SPI driver implementation features
+ * - Clock stop for reduced power usage when the driver is in stop state.
+ * - Fully interrupt driven.
+ * .
+ * @ingroup STM8
  */
 
 /**
@@ -101,5 +120,5 @@
  *   peripherals are left in low power mode.
  * - Fully interrupt driven.
  * .
- * @ingroup STM8_DRIVERS
+ * @ingroup STM8
  */
diff --git a/os/kernel/include/ch.h b/os/kernel/include/ch.h
index 58be5472a..07fc070d1 100644
--- a/os/kernel/include/ch.h
+++ b/os/kernel/include/ch.h
@@ -39,7 +39,7 @@
 /**
  * @brief   Kernel version string.
  */
-#define CH_KERNEL_VERSION       "2.1.3unstable"
+#define CH_KERNEL_VERSION       "2.1.4unstable"
 
 /**
  * @brief   Kernel version major number.
@@ -54,7 +54,7 @@
 /**
  * @brief   Kernel version patch number.
  */
-#define CH_KERNEL_PATCH         3
+#define CH_KERNEL_PATCH         4
 
 /*
  * Common values.
diff --git a/readme.txt b/readme.txt
index 248b20d8b..c73593b13 100644
--- a/readme.txt
+++ b/readme.txt
@@ -64,6 +64,9 @@
 *** Releases                                                              ***
 *****************************************************************************
 
+*** 2.1.4 ***
+- Added SPI driver to the STM8 documentation, it was missing.
+
 *** 2.1.3 ***
 - FIX: Fixed broken STM32 synchronous UART driver (bug 3100946).
 - FIX: Broken C++ wrapper (bug 3100925).