diff --git a/Doxygenfile b/Doxygenfile
index 0df8e3b2..bfc1f574 100644
--- a/Doxygenfile
+++ b/Doxygenfile
@@ -1773,7 +1773,7 @@ COMPACT_LATEX          = NO
 # The default value is: a4.
 # This tag requires that the tag GENERATE_LATEX is set to YES.
 
-PAPER_TYPE             = a4wide
+PAPER_TYPE             = a4
 
 # The EXTRA_PACKAGES tag can be used to specify one or more LaTeX package names
 # that should be included in the LaTeX output. The package can be specified just
diff --git a/boards/base/STM32F429i-Discovery/chibios/board_STM32LTDC.h b/boards/base/STM32F429i-Discovery/chibios/board_STM32LTDC.h
index 20f028f9..cdcb69f9 100644
--- a/boards/base/STM32F429i-Discovery/chibios/board_STM32LTDC.h
+++ b/boards/base/STM32F429i-Discovery/chibios/board_STM32LTDC.h
@@ -23,8 +23,6 @@ static const SPIConfig spi_cfg = {
 	((1 << 3) & SPI_CR1_BR) | SPI_CR1_SSM | SPI_CR1_SSI | SPI_CR1_MSTR
 };
 
-#define ALLOW_2ND_LAYER		GFXON
-
 static const ltdcConfig driverCfg = {
 	240, 320,
 	10, 2,
@@ -47,7 +45,7 @@ static const ltdcConfig driverCfg = {
 		0xFF,								// alpha
 		LTDC_LEF_ENABLE						// flags
 	},
-#if ALLOW_2ND_LAYER
+#if STM32LTDC_USE_LAYER2 || STM32LTDC_USE_DOUBLEBUFFERING
 	{										// Foreground layer config (if turned on)
 		(LLDCOLOR_TYPE *)(SDRAM_BANK_ADDR+(240 * 320 * LTDC_PIXELBYTES)), // Frame buffer address
 		240, 320,							// width, height
diff --git a/boards/base/STM32F439i-Eval/CubeHal/board_STM32LTDC.h b/boards/base/STM32F439i-Eval/CubeHal/board_STM32LTDC.h
index d598efac..2a423761 100644
--- a/boards/base/STM32F439i-Eval/CubeHal/board_STM32LTDC.h
+++ b/boards/base/STM32F439i-Eval/CubeHal/board_STM32LTDC.h
@@ -19,8 +19,6 @@
 #include "stm32f4xx_hal.h"
 #include "stm324x9i_eval_sdram.h"
 
-#define ALLOW_2ND_LAYER		GFXON
-
 // Panel parameters
 // This panel is a AMPIRE640480 panel.
 
@@ -48,7 +46,7 @@ static const ltdcConfig driverCfg = {
 		LTDC_LEF_ENABLE						// Layer configuration flags
 	},
 
-#if ALLOW_2ND_LAYER
+#if STM32LTDC_USE_LAYER2 || STM32LTDC_USE_DOUBLEBUFFERING
 	{										// Foreground layer config (if turned on)
 		(LLDCOLOR_TYPE *)(SDRAM_DEVICE_ADDR+(640 * 480 * LTDC_PIXELBYTES)), // Frame buffer address
 		640, 480,							// Width, Height (pixels)
diff --git a/boards/base/STM32F746-Discovery/board_STM32LTDC.h b/boards/base/STM32F746-Discovery/board_STM32LTDC.h
index a3b02ca7..0d1214c3 100644
--- a/boards/base/STM32F746-Discovery/board_STM32LTDC.h
+++ b/boards/base/STM32F746-Discovery/board_STM32LTDC.h
@@ -36,8 +36,6 @@
 	#define AFRH	AFR[1]
 #endif
 
-#define ALLOW_2ND_LAYER		GFXON
-
 static const ltdcConfig driverCfg = {
 	480, 272,								// Width, Height (pixels)
 	41, 10,									// Horizontal, Vertical sync (pixels)
@@ -62,7 +60,7 @@ static const ltdcConfig driverCfg = {
 		LTDC_LEF_ENABLE						// Layer configuration flags
 	},
 
-#if ALLOW_2ND_LAYER
+#if STM32LTDC_USE_LAYER2 || STM32LTDC_USE_DOUBLEBUFFERING
 	{										// Foreground layer config (if turned on)
 		(LLDCOLOR_TYPE *)(SDRAM_DEVICE_ADDR+(480 * 272 * LTDC_PIXELBYTES)), // Frame buffer address
 		480, 272,							// Width, Height (pixels)
@@ -393,6 +391,27 @@ static void configureLcdPins(void) {
 	#endif
 }
 
+static GFXINLINE void init_ltdc_clock(void)
+{
+	// Reset the LTDC peripheral
+	RCC->APB2RSTR |= RCC_APB2RSTR_LTDCRST;
+	RCC->APB2RSTR = 0;
+	
+	// Enable the LTDC clock
+	RCC->DCKCFGR1 = (RCC->DCKCFGR1 & ~RCC_DCKCFGR1_PLLSAIDIVR) | (1 << 16);
+	
+	// Enable the peripheral
+	RCC->APB2ENR |= RCC_APB2ENR_LTDCEN;
+}
+
+#if STM32LTDC_USE_DMA2D
+	static GFXINLINE void init_dma2d_clock(void)
+	{
+		// Enable DMA2D clock
+		RCC->AHB1ENR |= RCC_AHB1ENR_DMA2DEN;
+	}
+#endif
+
 static GFXINLINE void init_board(GDisplay *g) {
 	(void) g;
 
diff --git a/boards/base/STM32F746-Discovery/stm32f746g_raw32_system.c b/boards/base/STM32F746-Discovery/stm32f746g_raw32_system.c
index e0be3b23..56d3b16a 100644
--- a/boards/base/STM32F746-Discovery/stm32f746g_raw32_system.c
+++ b/boards/base/STM32F746-Discovery/stm32f746g_raw32_system.c
@@ -66,11 +66,11 @@
 #include "stm32f7xx.h"
 
 #if !defined  (HSE_VALUE) 
-  #define HSE_VALUE    ((gU32)25000000) /*!< Default value of the External oscillator in Hz */
+  #define HSE_VALUE    ((uint32_t)25000000) /*!< Default value of the External oscillator in Hz */
 #endif /* HSE_VALUE */
 
 #if !defined  (HSI_VALUE)
-  #define HSI_VALUE    ((gU32)16000000) /*!< Value of the Internal oscillator in Hz*/
+  #define HSI_VALUE    ((uint32_t)16000000) /*!< Value of the Internal oscillator in Hz*/
 #endif /* HSI_VALUE */
 
 /**
@@ -125,9 +125,9 @@
                is no need to call the 2 first functions listed above, since SystemCoreClock
                variable is updated automatically.
   */
-  gU32 SystemCoreClock = 16000000;
-  const gU8 AHBPrescTable[16] = {0, 0, 0, 0, 0, 0, 0, 0, 1, 2, 3, 4, 6, 7, 8, 9};
-  const gU8 APBPrescTable[8] = {0, 0, 0, 0, 1, 2, 3, 4};
+  uint32_t SystemCoreClock = 16000000;
+  const uint8_t AHBPrescTable[16] = {0, 0, 0, 0, 0, 0, 0, 0, 1, 2, 3, 4, 6, 7, 8, 9};
+  const uint8_t APBPrescTable[8] = {0, 0, 0, 0, 1, 2, 3, 4};
 
 /**
   * @}
@@ -163,19 +163,19 @@ void SystemInit(void)
   #endif
   /* Reset the RCC clock configuration to the default reset state ------------*/
   /* Set HSION bit */
-  RCC->CR |= (gU32)0x00000001;
+  RCC->CR |= (uint32_t)0x00000001;
 
   /* Reset CFGR register */
   RCC->CFGR = 0x00000000;
 
   /* Reset HSEON, CSSON and PLLON bits */
-  RCC->CR &= (gU32)0xFEF6FFFF;
+  RCC->CR &= (uint32_t)0xFEF6FFFF;
 
   /* Reset PLLCFGR register */
   RCC->PLLCFGR = 0x24003010;
 
   /* Reset HSEBYP bit */
-  RCC->CR &= (gU32)0xFFFBFFFF;
+  RCC->CR &= (uint32_t)0xFFFBFFFF;
 
   /* Disable all interrupts */
   RCC->CIR = 0x00000000;
@@ -230,7 +230,7 @@ void SystemInit(void)
   */
 void SystemCoreClockUpdate(void)
 {
-  gU32 tmp = 0, pllvco = 0, pllp = 2, pllsource = 0, pllm = 2;
+  uint32_t tmp = 0, pllvco = 0, pllp = 2, pllsource = 0, pllm = 2;
   
   /* Get SYSCLK source -------------------------------------------------------*/
   tmp = RCC->CFGR & RCC_CFGR_SWS;
@@ -287,8 +287,8 @@ void SystemCoreClockUpdate(void)
   */
 void SystemInit_ExtMemCtl(void)
 {
-  register gU32 tmpreg = 0, timeout = 0xFFFF;
-  register __IO gU32 index;
+  register uint32_t tmpreg = 0, timeout = 0xFFFF;
+  register __IO uint32_t index;
 
   /* Enable GPIOC, GPIOD, GPIOE, GPIOF, GPIOG and GPIOH interface 
   clock */
diff --git a/changelog.txt b/changelog.txt
index 07c0a27a..a7dfbf34 100644
--- a/changelog.txt
+++ b/changelog.txt
@@ -3,9 +3,21 @@
 *****************************************************************************
 
 *** After Release 2.9 ***
-CHANGE:		Added type gImage          to replace V2.x gdispImage
+CHANGE:		Added type gImage to replace V2.x gdispImage
 FIX:		Fixed GWIN console widget scroll
 FIX:		A warning and adjusted is made if GDISP_IMAGE_BMP_BLIT_BUFFER_SIZE is less than 40 bytes.
+FIX:        Prevent compiler warnings on duplicate const specifiers.
+FEATURE:	Added support for ChibiOS 6.x kernel.
+CHANGE:		STM32LTDC driver: Refactor to outsource clock setup for LTDC & DMA2D peripherals to the board file.
+CHANGE:     STM32LTDC driver: Remove obsolete LTDC_NO_CLOCK_INIT macro as this clock setup is now outsourced to the board file.
+CHANGE:     STM32LTDC driver: Automatically enable DMA cache flushing on STM32H7 platforms.
+CHANGE:     STM32LTDC driver: Rename LTDC_USE_DMA2D to STM32LTDC_USE_DMA2D.
+CHANGE:     STM32LTDC driver: Rename ALLOW_2ND_LAYER to STM32LTDC_USE_LAYER2.
+CHANGE:     STM32LTDC driver: Rename LTDC_DMA_CACHE_FLUSH to STM32LTDC_DMA_CACHE_FLUSH.
+CHANGE:     STM32LTDC driver: Rename GDISP_LTDC_USE_RGB565 to STM32LTDC_USE_RGB565.
+FEATURE:    STM32LTDC driver: Support double buffering. This introduces STM32LTDC_USE_DOUBLEBUFFERING.
+FIX:        STM32LTDC driver: Fix bug in gdisp_lld_blit_area() which affected blits with source coordinates other than (0, 0).
+FIX:        Improve /demos/benchmarks/rectangles
 
 
 *** Release 2.9 ***
diff --git a/demos/benchmarks/demo.mk b/demos/benchmarks/rectangles/demo.mk
similarity index 100%
rename from demos/benchmarks/demo.mk
rename to demos/benchmarks/rectangles/demo.mk
diff --git a/demos/benchmarks/gfxconf.h b/demos/benchmarks/rectangles/gfxconf.h
similarity index 93%
rename from demos/benchmarks/gfxconf.h
rename to demos/benchmarks/rectangles/gfxconf.h
index 3133e757..e9f15e54 100644
--- a/demos/benchmarks/gfxconf.h
+++ b/demos/benchmarks/rectangles/gfxconf.h
@@ -48,5 +48,10 @@
 /* Builtin Fonts */
 #define GDISP_INCLUDE_FONT_UI2          GFXON
 
+/* GFILE */
+#define GFX_USE_GFILE                   GFXON
+#define GFILE_NEED_PRINTG               GFXON
+#define GFILE_NEED_STRINGS              GFXON
+
 #endif /* _GFXCONF_H */
 
diff --git a/demos/benchmarks/main.c b/demos/benchmarks/rectangles/main.c
similarity index 51%
rename from demos/benchmarks/main.c
rename to demos/benchmarks/rectangles/main.c
index 772885fa..458b298d 100644
--- a/demos/benchmarks/main.c
+++ b/demos/benchmarks/rectangles/main.c
@@ -1,149 +1,108 @@
-/*
- * Copyright (c) 2012, 2013, Joel Bodenmann aka Tectu <joel@unormal.org>
- * Copyright (c) 2012, 2013, Andrew Hannam aka inmarket
- *
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions are met:
- *    * Redistributions of source code must retain the above copyright
- *      notice, this list of conditions and the following disclaimer.
- *    * Redistributions in binary form must reproduce the above copyright
- *      notice, this list of conditions and the following disclaimer in the
- *      documentation and/or other materials provided with the distribution.
- *    * Neither the name of the <organization> nor the
- *      names of its contributors may be used to endorse or promote products
- *      derived from this software without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
- * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
- * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
- * DISCLAIMED. IN NO EVENT SHALL <COPYRIGHT HOLDER> BE LIABLE FOR ANY
- * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
- * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
- * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
- * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
- * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
- * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-
-#include "stdlib.h"
-#include "string.h"
-#include "gfx.h"
-
-#define SCB_DEMCR (*(volatile unsigned *)0xE000EDFC)
-#define CPU_RESET_CYCLECOUNTER do { SCB_DEMCR = SCB_DEMCR | 0x01000000; \
-DWT_CYCCNT = 0; \
-DWT_CTRL = DWT_CTRL | 1 ; } while(0)
-
-static int uitoa(unsigned int value, char * buf, int max) {
-    int n = 0;
-    int i = 0;
-    unsigned int tmp = 0;
-
-    if (!buf)
-        return -3;
-
-    if (2 > max)
-        return -4;
-
-    i=1;
-    tmp = value;
-    if (0 > tmp) {
-        tmp *= -1;
-        i++;
-    }
-    for (;;) {
-        tmp /= 10;
-        if (0 >= tmp)
-            break;
-        i++;
-    }
-    if (i >= max) {
-        buf[0] = '?';
-        buf[1] = 0x0;
-        return 2;
-    }
-
-    n = i;
-    tmp = value;
-    if (0 > tmp) {
-        tmp *= -1;
-    }
-    buf[i--] = 0x0;
-    for (;;) {
-        buf[i--] = (tmp % 10) + '0';
-        tmp /= 10;
-        if (0 >= tmp) {
-            break;
-        }
-    }
-    if (-1 != i) {
-        buf[i--] = '-';
-    }
-
-    return n;
-}
-
-void benchmark(void) {
-    gU32 i, pixels, ms, pps;
-    char pps_str[25];
-	gCoord height, width, rx, ry, rcx, rcy;
-    gColor random_color;
-	gFont font;
-
-    gdispSetOrientation(gOrientation90);
-
-	width = gdispGetWidth();
-	height = gdispGetHeight();
-    font = gdispOpenFont("UI2 Double");
-
-	gdispDrawStringBox(0, 0, width, 30, "ChibiOS/GFX - Benchmark", font, GFX_WHITE, gJustifyCenter);
-
-	font = gdispOpenFont("UI2");
-	gdispDrawStringBox(0, height/2, width, 30, "5000 random rectangles", font, GFX_WHITE, gJustifyCenter);
-	
-	gfxSleepMilliseconds(3000);
-	
-	/* seed for the rand() */
-	srand(DWT_CYCCNT);
-	pixels = 0;
-
-	CPU_RESET_CYCLECOUNTER;
-
-	for (i = 0; i < 5000; i++) {
-		random_color = (rand() % 65535);
-		rx = (rand() % (width-10));
-		ry = (rand() % (height-10));
-		rcx = (rand() % ((width-rx)-10))+10;
-		rcy = (rand() % ((height-ry)-10))+10;
-
-		gdispFillArea(rx, ry, rcx, rcy, random_color);
-		pixels += (rcx+1)*(rcy+1);
-	}
-
-	ms = DWT_CYCCNT / 168000;
-	pps = (float)pixels/((float)ms/1000.0f);
-
-	memset (pps_str, 0, sizeof(pps_str));
-	uitoa(pps, pps_str, sizeof(pps_str));
-	strcat(pps_str, " Pixels/s");
-
-	font = gdispOpenFont("UI2 Double");
-	gdispClear(GFX_BLACK);
-	gdispDrawStringBox(0, 0, width, 30, "ChibiOS/GFX - Benchmark", font, GFX_WHITE, gJustifyCenter);
-	gdispDrawStringBox(0, height/2, width, 30, pps_str, font, GFX_WHITE, gJustifyCenter);
-	//gdispDrawString(20, height/2, pps_str, font, GFX_WHITE);
-}
-
-int main(void) {
-	gfxInit();
-	
-	benchmark();
-    
-	while(1) {
-		gfxSleepMilliseconds(500);
-	}
-
-	return 0;
-}
+/*
+ * Copyright (c) 2012 - 2021, Joel Bodenmann aka Tectu <joel@ugfx.io>
+ * Copyright (c) 2012 - 2021, Andrew Hannam aka inmarket <inmarket@ugfx.io>
+ *
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *    * Redistributions of source code must retain the above copyright
+ *      notice, this list of conditions and the following disclaimer.
+ *    * Redistributions in binary form must reproduce the above copyright
+ *      notice, this list of conditions and the following disclaimer in the
+ *      documentation and/or other materials provided with the distribution.
+ *    * Neither the name of the <organization> nor the
+ *      names of its contributors may be used to endorse or promote products
+ *      derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+ * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED. IN NO EVENT SHALL <COPYRIGHT HOLDER> BE LIABLE FOR ANY
+ * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
+ * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include "stdlib.h"
+#include "string.h"
+#include "gfx.h"
+
+#define RESULT_STR_LENGTH 32
+
+void benchmark(void)
+{
+	gCoord height, width, rx, ry, rcx, rcy;
+    gColor random_color;
+	gCoord fontHeight;
+	gFont font;
+
+	// Prepare resources
+	width = gdispGetWidth();
+	height = gdispGetHeight();
+    font = gdispOpenFont("*");
+	fontHeight = gdispGetFontMetric(font, gFontHeight);
+
+	// Show intro message
+	gdispDrawStringBox(0, 0, width, 30, "uGFX - Benchmark", font, GFX_WHITE, gJustifyCenter);
+	gdispDrawStringBox(0, height/2, width, 30, "5000 random rectangles", font, GFX_WHITE, gJustifyCenter);
+	gfxSleepMilliseconds(3000);
+	
+	// Seed RNG
+	srand(0);
+
+	// Render rectangles and count ticks & pixels
+	gU64 pixels = 0;
+	const gTicks ticksStart = gfxSystemTicks();
+	for (gU32 i = 0; i < 5000; i++) {
+		random_color = (rand() % 65535);
+		rx = (rand() % (width-10));
+		ry = (rand() % (height-10));
+		rcx = (rand() % ((width-rx)-10))+10;
+		rcy = (rand() % ((height-ry)-10))+10;
+
+		gdispFillArea(rx, ry, rcx, rcy, random_color);
+		pixels += (rcx+1)*(rcy+1);
+	}
+	const gTicks ticksEnd = gfxSystemTicks();
+	
+	// Calculate result
+	char str_ticks[RESULT_STR_LENGTH];
+	char str_seconds[RESULT_STR_LENGTH];
+	char str_pps[RESULT_STR_LENGTH];
+	{		
+		// Figure out how many ticks are 1 second
+		const gTicks ticksPerSecond = gfxMillisecondsToTicks(1000);
+		
+		const gTicks ticksElapsed = ticksEnd - ticksStart;
+		const float secondsElapsed = (float)ticksElapsed / (float)ticksPerSecond;
+		gU32 pps = (float)pixels / secondsElapsed;
+
+		// Produce strings
+		memset(str_ticks, 0, RESULT_STR_LENGTH);
+		memset(str_seconds, 0, RESULT_STR_LENGTH);
+		memset(str_pps, 0, RESULT_STR_LENGTH);
+		snprintg(str_ticks, RESULT_STR_LENGTH, "%d ticks", ticksElapsed);
+		snprintg(str_pps, RESULT_STR_LENGTH, "%d pixels/s", pps);
+	}
+
+	// Show result
+	gdispClear(GFX_BLACK);
+	gdispDrawStringBox(0, 0, width, 30, "uGFX - Benchmark", font, GFX_WHITE, gJustifyCenter);
+	gdispDrawStringBox(0, height/2+0*(fontHeight+10), width, 30, str_ticks, font, GFX_WHITE, gJustifyCenter);
+	gdispDrawStringBox(0, height/2+1*(fontHeight+10), width, 30, str_pps, font, GFX_WHITE, gJustifyCenter);
+}
+
+int main(void) {
+	gfxInit();
+	
+	benchmark();
+    
+	while (gTrue)
+		gfxSleepMilliseconds(500);
+
+	return 0;
+}
diff --git a/demos/modules/gtrans/basic/gfxconf.h b/demos/modules/gtrans/basic/gfxconf.h
index e41aaf03..3dfa5fe2 100644
--- a/demos/modules/gtrans/basic/gfxconf.h
+++ b/demos/modules/gtrans/basic/gfxconf.h
@@ -42,7 +42,6 @@
 #define GDISP_NEED_VALIDATION	                GFXON
 #define GDISP_NEED_CLIP			                GFXON
 #define GDISP_NEED_TEXT			                GFXON
-#define GDISP_NEED_ANTIALIAS                    GFXON
 #define GDISP_NEED_UTF8                         GFXON
 #define GDISP_NEED_TEXT_KERNING                 GFXON
 
diff --git a/demos/modules/gtrans/basic/main.c b/demos/modules/gtrans/basic/main.c
index e4a6e608..cefb78d8 100644
--- a/demos/modules/gtrans/basic/main.c
+++ b/demos/modules/gtrans/basic/main.c
@@ -62,7 +62,7 @@ static const char* FrenchStrings[] = {
 };
 static const transTable FrenchTranslation = { sizeof(FrenchStrings)/sizeof(FrenchStrings[0]), FrenchStrings };
 
-void updateText()
+void updateText(void)
 {
     gCoord width = 400;
     gCoord height = 30;
diff --git a/drivers/gdisp/STM32LTDC/board_STM32LTDC_template.h b/drivers/gdisp/STM32LTDC/board_STM32LTDC_template.h
index 20e47b5e..70b7c024 100644
--- a/drivers/gdisp/STM32LTDC/board_STM32LTDC_template.h
+++ b/drivers/gdisp/STM32LTDC/board_STM32LTDC_template.h
@@ -8,8 +8,6 @@
 #ifndef _GDISP_LLD_BOARD_H
 #define _GDISP_LLD_BOARD_H
 
-#define ALLOW_2ND_LAYER		GFXON
-
 static const ltdcConfig driverCfg = {
 	480, 272,								// Width, Height (pixels)
 	41, 10,									// Horizontal, Vertical sync (pixels)
@@ -34,7 +32,7 @@ static const ltdcConfig driverCfg = {
 		LTDC_LEF_ENABLE						// Layer configuration flags
 	},
 
-#if ALLOW_2ND_LAYER
+#if STM32LTDC_USE_LAYER2 || STM32LTDC_USE_DOUBLEBUFFERING
 	{										// Foreground layer config (if turned on)
 		(LLDCOLOR_TYPE *)(SDRAM_DEVICE_ADDR+(480 * 272 * LTDC_PIXELBYTES)), // Frame buffer address
 		480, 272,							// Width, Height (pixels)
@@ -55,7 +53,20 @@ static const ltdcConfig driverCfg = {
 #endif
 };
 
-static GFXINLINE void init_board(GDisplay* g) {
+static GFXINLINE void init_ltdc_clock(void)
+{
+	// Setup LTDC clock and enable the peripheral
+}
+
+#if STM32LTDC_USE_DMA2D
+	static GFXINLINE void init_dma2d_clock(void)
+	{
+		// Setup DMA2D clock and enable the peripheral
+	}
+#endif
+
+static GFXINLINE void init_board(GDisplay* g)
+{
 	// This is function only called once with the display for the background layer.
 	(void)g;
 }
diff --git a/drivers/gdisp/STM32LTDC/gdisp_lld_STM32LTDC.c b/drivers/gdisp/STM32LTDC/gdisp_lld_STM32LTDC.c
index 7cb8e8a0..5ec9a427 100644
--- a/drivers/gdisp/STM32LTDC/gdisp_lld_STM32LTDC.c
+++ b/drivers/gdisp/STM32LTDC/gdisp_lld_STM32LTDC.c
@@ -12,6 +12,10 @@
 #define GDISP_DRIVER_VMT			GDISPVMT_STM32LTDC
 #include "gdisp_lld_config.h"
 #include "../../../src/gdisp/gdisp_driver.h"
+#include "stm32_ltdc.h"
+#if STM32LTDC_USE_DMA2D
+ 	#include "stm32_dma2d.h"
+#endif
 
 #if defined(GDISP_SCREEN_HEIGHT) || defined(GDISP_SCREEN_HEIGHT)
 	#if GFX_COMPILER_WARNING_TYPE == GFX_COMPILER_WARNING_DIRECT
@@ -23,28 +27,38 @@
 	#undef GDISP_SCREEN_HEIGHT
 #endif
 
-#ifndef LTDC_USE_DMA2D
- 	#define LTDC_USE_DMA2D 			GFXOFF
+#ifndef	STM32LTDC_DMA_CACHE_FLUSH
+	#define	STM32LTDC_DMA_CACHE_FLUSH	GFXOFF
 #endif
-#ifndef LTDC_NO_CLOCK_INIT
-	#define LTDC_NO_CLOCK_INIT		GFXOFF
+#ifndef STM32LTDC_USE_DMA2D
+ 	#define STM32LTDC_USE_DMA2D 		GFXOFF
 #endif
-#ifndef	LTDC_DMA_CACHE_FLUSH
-	#define	LTDC_DMA_CACHE_FLUSH	GFXOFF
+#ifndef STM32LTDC_USE_LAYER2
+	#define	STM32LTDC_USE_LAYER2		GFXOFF
+#endif
+#ifndef STM32LTDC_USE_RGB565
+	#define STM32LTDC_USE_RGB565		GFXOFF
 #endif
 
-#include "stm32_ltdc.h"
+// Prevent usage of 2nd layer and double buffering at the same time.
+// See readme.md for more inforamtion.
+#if STM32LTDC_USE_LAYER2 && STM32LTDC_USE_DOUBLEBUFFERING
+	#error "GDISP - STM32LTDC: Cannot use 2nd LTDC layer and double buffering at the same time. See the driver's readme.md for more information."
+#endif
 
-#if LTDC_USE_DMA2D
- 	#include "stm32_dma2d.h"
+// Double buffering requires GDISP_NEED_CONTROL for the buffer swap command
+#if STM32LTDC_USE_DOUBLEBUFFERING && !GDISP_NEED_CONTROL
+	#error "GDISP - STM32LTDC: Double buffering requires GDISP_NEED_CONTROL."
+#endif
 
-	#if defined(STM32F7) || defined(STM32F746xx)
-		#undef 	LTDC_DMA_CACHE_FLUSH
-		#define	LTDC_DMA_CACHE_FLUSH	GFXON
+// Force DMA cache flushing on certain platforms/systems.
+#if STM32LTDC_USE_DMA2D
+	#if defined(STM32F7) || defined(STM32H7) || defined(STM32F746xx)
+		#undef 	STM32LTDC_DMA_CACHE_FLUSH
+		#define	STM32LTDC_DMA_CACHE_FLUSH	GFXON
 	#endif
 #endif
 
-
 typedef struct ltdcLayerConfig {
 	// Frame
 	LLDCOLOR_TYPE*	frame;			// Frame buffer address
@@ -70,8 +84,8 @@ typedef struct ltdcConfig {
 	gCoord		hsync, vsync;				// Horizontal and Vertical sync pixels
 	gCoord		hbackporch, vbackporch;		// Horizontal and Vertical back porch pixels
 	gCoord		hfrontporch, vfrontporch;	// Horizontal and Vertical front porch pixels
-	gU32	syncflags;					// Sync flags
-	gU32	bgcolor;					// Clear screen color RGB888
+	gU32		syncflags;					// Sync flags
+	gU32		bgcolor;					// Clear screen color RGB888
 
 	ltdcLayerConfig	bglayer;				// Background layer config
 	ltdcLayerConfig	fglayer;				// Foreground layer config
@@ -108,7 +122,7 @@ typedef struct ltdcConfig {
 /* Driver local routines.                                                    */
 /*===========================================================================*/
 
-#define PIXIL_POS(g, x, y)		((y) * ((ltdcLayerConfig *)g->priv)->pitch + (x) * LTDC_PIXELBYTES)
+#define PIXEL_POS(g, x, y)		((y) * ((ltdcLayerConfig *)g->priv)->pitch + (x) * LTDC_PIXELBYTES)
 #define PIXEL_ADDR(g, pos)		((LLDCOLOR_TYPE *)((gU8 *)((ltdcLayerConfig *)g->priv)->frame+pos))
 
 /*===========================================================================*/
@@ -166,25 +180,8 @@ static void _ltdc_init(void) {
 	// Set up the display scanning
 	gU32 hacc, vacc;
 
-	// Reset the LTDC peripheral
-	RCC->APB2RSTR |= RCC_APB2RSTR_LTDCRST;
-	RCC->APB2RSTR = 0;
-
-	// Enable the LTDC clock
-	#if !LTDC_NO_CLOCK_INIT
-		#if defined(STM32F469xx)
-			RCC->DCKCFGR = (RCC->DCKCFGR & ~RCC_DCKCFGR_PLLSAIDIVR);
-		#elif defined(STM32F4) || defined(STM32F429_439xx) || defined(STM32F429xx)
-			RCC->DCKCFGR = (RCC->DCKCFGR & ~RCC_DCKCFGR_PLLSAIDIVR) | (1 << 16);
-		#elif defined(STM32F7) || defined(STM32F746xx)
-			RCC->DCKCFGR1 = (RCC->DCKCFGR1 & ~RCC_DCKCFGR1_PLLSAIDIVR) | (1 << 16);
-		#else
-			#error STM32LTDC driver not implemented for your platform
-		#endif
-	#endif
-
-	// Enable the peripheral
-	RCC->APB2ENR |= RCC_APB2ENR_LTDCEN;
+	// Let the board handle LTDC clock setups
+	init_ltdc_clock();
 
 	// Turn off the controller and its interrupts
 	LTDC->GCR = 0;
@@ -239,7 +236,8 @@ LLDSPEC gBool gdisp_lld_init(GDisplay* g) {
 	g->board = 0;
 
 	switch(g->controllerdisplay) {
-	case 0:			// Display 0 is the background layer
+	// Display 0 is the background layer
+	case 0:
 		// Init the board
 		init_board(g);
 
@@ -247,7 +245,7 @@ LLDSPEC gBool gdisp_lld_init(GDisplay* g) {
 		_ltdc_init();
 
 		// Initialise DMA2D
-		#if LTDC_USE_DMA2D
+		#if STM32LTDC_USE_DMA2D
 			dma2d_init();
 		#endif
 
@@ -264,23 +262,26 @@ LLDSPEC gBool gdisp_lld_init(GDisplay* g) {
 
 		break;
 
-	case 1:			// Display 1 is the foreground layer
-
-		if (!(driverCfg.fglayer.layerflags & LTDC_LEF_ENABLE))
-			return gFalse;
-
-		// Load the foreground layer
-		_ltdc_layer_init(LTDC_Layer2, &driverCfg.fglayer);
-		_ltdc_reload();
-
+	// Display 1 is the foreground layer or the 2nd buffer for double buffering
+	case 1:
 		g->priv = (void *)&driverCfg.fglayer;
 
-	    // Finish Init the board
-	    post_init_board(g);
+		#if STM32LTDC_USE_LAYER2
+			if (!(driverCfg.fglayer.layerflags & LTDC_LEF_ENABLE))
+				return gFalse;
+	
+			// Load the foreground layer
+			_ltdc_layer_init(LTDC_Layer2, &driverCfg.fglayer);
+			_ltdc_reload();
+	
+		    // Finish Init the board
+		    post_init_board(g);
+		#endif
 
 		break;
 
-	default:		// There is only 1 LTDC in the CPU and only the 2 layers in the LTDC.
+	// There is only 1 LTDC in the CPU and only the 2 layers in the LTDC.
+	default:
 		return gFalse;
 	}
 
@@ -300,25 +301,27 @@ LLDSPEC void gdisp_lld_draw_pixel(GDisplay* g) {
 
 	#if GDISP_NEED_CONTROL
 		switch(g->g.Orientation) {
+                case gOrientationPortrait:
+                case gOrientationLandscape:
 		case gOrientation0:
 		default:
-			pos = PIXIL_POS(g, g->p.x, g->p.y);
+			pos = PIXEL_POS(g, g->p.x, g->p.y);
 			break;
 		case gOrientation90:
-			pos = PIXIL_POS(g, g->p.y, g->g.Width-g->p.x-1);
+			pos = PIXEL_POS(g, g->p.y, g->g.Width-g->p.x-1);
 			break;
 		case gOrientation180:
-			pos = PIXIL_POS(g, g->g.Width-g->p.x-1, g->g.Height-g->p.y-1);
+			pos = PIXEL_POS(g, g->g.Width-g->p.x-1, g->g.Height-g->p.y-1);
 			break;
 		case gOrientation270:
-			pos = PIXIL_POS(g, g->g.Height-g->p.y-1, g->p.x);
+			pos = PIXEL_POS(g, g->g.Height-g->p.y-1, g->p.x);
 			break;
 		}
 	#else
-		pos = PIXIL_POS(g, g->p.x, g->p.y);
+		pos = PIXEL_POS(g, g->p.x, g->p.y);
 	#endif
 
-	#if LTDC_USE_DMA2D
+	#if STM32LTDC_USE_DMA2D
 		while(DMA2D->CR & DMA2D_CR_START);
 	#endif
 
@@ -338,25 +341,27 @@ LLDSPEC	gColor gdisp_lld_get_pixel_color(GDisplay* g) {
 
 	#if GDISP_NEED_CONTROL
 		switch(g->g.Orientation) {
+                case gOrientationPortrait:
+                case gOrientationLandscape:
 		case gOrientation0:
 		default:
-			pos = PIXIL_POS(g, g->p.x, g->p.y);
+			pos = PIXEL_POS(g, g->p.x, g->p.y);
 			break;
 		case gOrientation90:
-			pos = PIXIL_POS(g, g->p.y, g->g.Width-g->p.x-1);
+			pos = PIXEL_POS(g, g->p.y, g->g.Width-g->p.x-1);
 			break;
 		case gOrientation180:
-			pos = PIXIL_POS(g, g->g.Width-g->p.x-1, g->g.Height-g->p.y-1);
+			pos = PIXEL_POS(g, g->g.Width-g->p.x-1, g->g.Height-g->p.y-1);
 			break;
 		case gOrientation270:
-			pos = PIXIL_POS(g, g->g.Height-g->p.y-1, g->p.x);
+			pos = PIXEL_POS(g, g->g.Height-g->p.y-1, g->p.x);
 			break;
 		}
 	#else
-		pos = PIXIL_POS(g, g->p.x, g->p.y);
+		pos = PIXEL_POS(g, g->p.x, g->p.y);
 	#endif
 
-	#if LTDC_USE_DMA2D
+	#if STM32LTDC_USE_DMA2D
 		while(DMA2D->CR & DMA2D_CR_START);
 	#endif
 
@@ -399,6 +404,8 @@ LLDSPEC	gColor gdisp_lld_get_pixel_color(GDisplay* g) {
 						g->g.Height = tmp;
 					}
 					break;
+                                case gOrientationPortrait:
+                                case gOrientationLandscape:
 				default:
 					return;
 			}
@@ -410,12 +417,33 @@ LLDSPEC	gColor gdisp_lld_get_pixel_color(GDisplay* g) {
 			set_backlight(g, (unsigned)g->p.ptr);
 			g->g.Backlight = (unsigned)g->p.ptr;
 			return;
+		
+		#if STM32LTDC_USE_DOUBLEBUFFERING
+		case STM32LTDC_CONTROL_SHOW_BUFFER:
+		{
+			// Wait for end-of-line interrupt
+			// We use simple polling here as end-of-line interrupts are very frequent and usually happen in sub-millisecond intervals.
+			while (LTDC->ISR & LTDC_ISR_LIF);
+			
+			// Update framebuffer address in LTDC register
+			// As we currently only support one layer when doublebuffering is enabled, this change happens only to layer 1.
+			LTDC_Layer1->CFBAR = (gU32)(((ltdcLayerConfig*)g->priv)->frame) & LTDC_LxCFBAR_CFBADD;
+
+			// Reload after LTDC config register modifications
+			_ltdc_reload();
+
+			return;
+		}
+		#endif
+		
+		default:
+			return;
 		}
 	}
 #endif
 
-#if LTDC_USE_DMA2D
-	#if LTDC_DMA_CACHE_FLUSH
+#if STM32LTDC_USE_DMA2D
+	#if STM32LTDC_DMA_CACHE_FLUSH
 		#if defined(__CC_ARM)
 			#define __ugfxDSB()		__dsb(0xF)
 		#else		// GCC like
@@ -425,8 +453,8 @@ LLDSPEC	gColor gdisp_lld_get_pixel_color(GDisplay* g) {
 
 
 	static void dma2d_init(void) {
-		// Enable DMA2D clock
-		RCC->AHB1ENR |= RCC_AHB1ENR_DMA2DEN;
+		// Let the board handle the clock setup
+		init_dma2d_clock();
 
 		// Output color format
 		#if GDISP_LLD_PIXELFORMAT == GDISP_PIXELFORMAT_RGB565
@@ -452,35 +480,37 @@ LLDSPEC	gColor gdisp_lld_get_pixel_color(GDisplay* g) {
 
 		#if GDISP_NEED_CONTROL
 			switch(g->g.Orientation) {
+                        case gOrientationPortrait:
+                        case gOrientationLandscape:
 			case gOrientation0:
 			default:
-				pos = PIXIL_POS(g, g->p.x, g->p.y);
+				pos = PIXEL_POS(g, g->p.x, g->p.y);
 				lineadd = g->g.Width - g->p.cx;
 				shape = (g->p.cx << 16) | (g->p.cy);
 				break;
 			case gOrientation90:
-				pos = PIXIL_POS(g, g->p.y, g->g.Width-g->p.x-g->p.cx);
+				pos = PIXEL_POS(g, g->p.y, g->g.Width-g->p.x-g->p.cx);
 				lineadd = g->g.Height - g->p.cy;
 				shape = (g->p.cy << 16) | (g->p.cx);
 				break;
 			case gOrientation180:
-				pos = PIXIL_POS(g, g->g.Width-g->p.x-g->p.cx, g->g.Height-g->p.y-g->p.cy);
+				pos = PIXEL_POS(g, g->g.Width-g->p.x-g->p.cx, g->g.Height-g->p.y-g->p.cy);
 				lineadd = g->g.Width - g->p.cx;
 				shape = (g->p.cx << 16) | (g->p.cy);
 				break;
 			case gOrientation270:
-				pos = PIXIL_POS(g, g->g.Height-g->p.y-g->p.cy, g->p.x);
+				pos = PIXEL_POS(g, g->g.Height-g->p.y-g->p.cy, g->p.x);
 				lineadd = g->g.Height - g->p.cy;
 				shape = (g->p.cy << 16) | (g->p.cx);
 				break;
 			}
 		#else
-			pos = PIXIL_POS(g, g->p.x, g->p.y);
+			pos = PIXEL_POS(g, g->p.x, g->p.y);
 			lineadd = g->g.Width - g->p.cx;
 			shape = (g->p.cx << 16) | (g->p.cy);
 		#endif
 
-		#if LTDC_DMA_CACHE_FLUSH
+		#if STM32LTDC_DMA_CACHE_FLUSH
 		{
 			// This is slightly less than optimal as we flush the whole line in the source and destination image
 			// instead of just the cx portion but this saves us having to iterate over each line.
@@ -542,10 +572,10 @@ LLDSPEC	gColor gdisp_lld_get_pixel_color(GDisplay* g) {
 		LLDSPEC void gdisp_lld_blit_area(GDisplay* g) {
 			gU32	srcstart, dststart;
 
-			srcstart = LTDC_PIXELBYTES * ((gU32)g->p.x2 * g->p.y1 * + g->p.x1) + (gU32)g->p.ptr;
-			dststart = (gU32)PIXEL_ADDR(g, PIXIL_POS(g, g->p.x, g->p.y));
+			srcstart = LTDC_PIXELBYTES * ((gU32)g->p.x2 * g->p.y1 + g->p.x1) + (gU32)g->p.ptr;
+			dststart = (gU32)PIXEL_ADDR(g, PIXEL_POS(g, g->p.x, g->p.y));
 
-			#if LTDC_DMA_CACHE_FLUSH
+			#if STM32LTDC_DMA_CACHE_FLUSH
 			{
 				// This is slightly less than optimal as we flush the whole line in the source and destination image
 				// instead of just the cx portion but this saves us having to iterate over each line.
@@ -588,6 +618,6 @@ LLDSPEC	gColor gdisp_lld_get_pixel_color(GDisplay* g) {
 		}
 	#endif
 
-#endif /* LTDC_USE_DMA2D */
+#endif /* STM32LTDC_USE_DMA2D */
 
 #endif /* GFX_USE_GDISP */
diff --git a/drivers/gdisp/STM32LTDC/gdisp_lld_config.h b/drivers/gdisp/STM32LTDC/gdisp_lld_config.h
index 0061adb0..38fbad7f 100644
--- a/drivers/gdisp/STM32LTDC/gdisp_lld_config.h
+++ b/drivers/gdisp/STM32LTDC/gdisp_lld_config.h
@@ -14,29 +14,32 @@
 /* Driver hardware support.                                                  */
 /*===========================================================================*/
 
-#define	LTDC_USE_DMA2D						GFXON
 #define GDISP_HARDWARE_DRAWPIXEL			GFXON
 #define GDISP_HARDWARE_PIXELREAD			GFXON
 #define GDISP_HARDWARE_CONTROL				GFXON
 
 // Both these pixel formats are supported - pick one.
 // RGB565 obviously is faster and uses less RAM but with lower color resolution than RGB888
-
-#if defined(GDISP_LTDC_USE_RGB565) && GDISP_LTDC_USE_RGB565
+#if defined(STM32LTDC_USE_RGB565) && STM32LTDC_USE_RGB565
 	#define GDISP_LLD_PIXELFORMAT			GDISP_PIXELFORMAT_RGB565
-	#if GDISP_TOTAL_DISPLAYS > 1
-		#error "LTDC: You must use RGB888 pixel format with LTDC when using dual layers as only RGB888 currently supports using alpha"
+	#if defined(STM32LTDC_USE_LAYER2) && STM32LTDC_USE_LAYER2
+		#error "GDISP - STM32LTDC: You must use RGB888 pixel format with LTDC when using both layers as only RGB888 currently supports using alpha."
 	#endif
 #else
 	#define GDISP_LLD_PIXELFORMAT			GDISP_PIXELFORMAT_RGB888
 #endif
 
-
 /*===========================================================================*/
 /* Don't change stuff below this line. Please.                               */
 /*===========================================================================*/
 
-#if LTDC_USE_DMA2D
+// LLD command to swap buffers if double buffering is enabled.
+#if STM32LTDC_USE_DOUBLEBUFFERING
+	#define STM32LTDC_CONTROL_SHOW_BUFFER	(GDISP_CONTROL_LLD+0)
+#endif
+
+// Adjust driver config if DMA2D is enabled.
+#if STM32LTDC_USE_DMA2D
 	// DMA2D supports accelerated fills
  	#define GDISP_HARDWARE_FILLS		GFXON
 
diff --git a/drivers/gdisp/STM32LTDC/readme.md b/drivers/gdisp/STM32LTDC/readme.md
new file mode 100644
index 00000000..3489fc43
--- /dev/null
+++ b/drivers/gdisp/STM32LTDC/readme.md
@@ -0,0 +1,92 @@
+# Usage
+To use this driver:
+
+1. Add in your `gfxconf.h`:
+	a) `#define GFX_USE_GDISP		GFXON`
+
+2. To your makefile add the following lines:
+```
+	include $(GFXLIB)/gfx.mk
+	include $(GFXLIB)/drivers/gdisp/STM32LTDC/driver.mk
+```
+
+3. Add a `board_STM32LTDC.h` to you project directory (or board directory)
+	based on one of the templates.
+
+# Limitations
+Currently, both `gOrientationPortrait` and `gOrientationLandscape` are not supported by this driver.
+
+	
+# Configuration
+Configuration options available in `gfxconf.h`:
+
+| Option | Default | Description |
+| --- | --- | --- |
+| `STM32LTDC_DMA_CACHE_FLUSH` | `GFXOFF` | Whether to flush the DMA cache on DMA2D operations. This will be turned on automatically on certian platforms/systems. |
+| `STM32LTDC_USE_DMA2D` | `GFXON` | Whether to use the DMA2D peripheral for hardware acceleration. |
+| `STM32LTDC_USE_LAYER2` | `GFXOFF` | Whether to use the 2nd LTDC layer. See the corresponding section below. |
+| `STM32LTDC_USE_DOUBLEBUFFERING` | `GFXOFF` | Whether to use double buffering. See the corresponding section below. |
+| `STM32LTDC_USE_RGB565` | `GFXOFF` | Whether to use RGB565 instead of RGB888. |
+
+# 2nd layer
+To use the 2nd LTDC layer:
+  - set `STM32LTDC_USE_LAYER2` to `GFXON` in `gfxconf.h`.
+  - set `GDISP_TOTAL_DISPLAYS` to `2` in `gfxconf.h`.
+
+The 2nd layer is exposed as a separate display. Use `gdispGetDisplay()` to retrieve the individual layers.
+
+For more information, see:
+  - https://wiki.ugfx.io/index.php/Multiple_displays#Example_-_Same_controller
+  - https://wiki.ugfx.io/index.php/Multiple_displays#Access_the_displays
+
+# Double buffering
+To use double buffering:
+  - set `STM32LTDC_USE_DOUBLEBUFFERING` to `GFXON` in `gfxconf.h`.
+  - set `GDISP_TOTAL_DISPLAYS` to `2` in `gfxconf.h`.
+
+When double buffering is enabled, the 2nd LTDC layer cannot be used. While this limitation is easy to remove from a software perspective, there is little benefit in doing so. Double buffering requires, as the name implies, twice the memory. If the 2nd layer would be used together with double buffering strategy, a total of four full framebuffers would be required. Years of real-world experience shows that there's practically never enough memory bandwidth available to do this.
+
+To use double buffering in an application, retrieve the two buffers via `gdispGetDisplay()`.
+Whenever a buffer swap is necessary, use `gdispGControl(g, STM32LTDC_CONTROL_SHOW_BUFFER, NULL);` where `g` is the buffer to be shown.
+
+Simple example:
+```c
+#include "gfx.h"
+
+static GDisplay* _display1;
+static GDisplay* _display2;
+
+// Requests a buffer swap on the driver level
+static void _setActiveBuffer(GDisplay* g)
+{
+	gdispGControl(g, STM32LTDC_CONTROL_SHOW_BUFFER, NULL);
+}
+
+int main(void)
+{
+	// Initialize uGFX library
+	gfxInit();
+	
+	// Get the two buffers
+	_display1 = gdispGetDisplay(0);
+	if (!_display1)
+		gfxHalt("could not get display 1");
+	_display2 = gdispGetDisplay(1);
+	if (!_display2)
+		gfxHalt("could not get display 2");
+
+	// Render to each buffer
+	gdispGClear(_display1, GFX_BLUE);
+	gdispGClear(_display2, GFX_RED);
+
+	// Switch between buffers
+	while (gTrue) {
+		gfxSleepMilliseconds(800);
+		_setActiveBuffer(_display1);
+		gfxSleepMilliseconds(800);
+		_setActiveBuffer(_display2);
+	}
+
+	return 0;
+}
+```
diff --git a/drivers/gdisp/STM32LTDC/readme.txt b/drivers/gdisp/STM32LTDC/readme.txt
deleted file mode 100644
index dcc17d39..00000000
--- a/drivers/gdisp/STM32LTDC/readme.txt
+++ /dev/null
@@ -1,11 +0,0 @@
-To use this driver:
-
-1. Add in your gfxconf.h:
-	a) #define GFX_USE_GDISP		GFXON
-
-2. To your makefile add the following lines:
-	include $(GFXLIB)/gfx.mk
-	include $(GFXLIB)/drivers/gdisp/STM32LTDC/driver.mk
-
-3. Add a board_STM32LTDC.h to you project directory (or board directory)
-	based on one of the templates.
diff --git a/drivers/multiple/Win32/gdisp_lld_Win32.c b/drivers/multiple/Win32/gdisp_lld_Win32.c
index 1ec52a37..5b1390e7 100644
--- a/drivers/multiple/Win32/gdisp_lld_Win32.c
+++ b/drivers/multiple/Win32/gdisp_lld_Win32.c
@@ -99,7 +99,11 @@
 	static gBool Win32MouseInit(GMouse *m, unsigned driverinstance);
 	static gBool Win32MouseRead(GMouse *m, GMouseReading *prd);
 
-	const GMouseVMT const GMOUSE_DRIVER_VMT[1] = {{
+	/**
+	 * This should be: const GMouseVMT const GMOUSE_DRIVER_VMT[1] = {{
+	 * However, some major compilers complain about the duplicate const specifier even though this is perfectly valid standard C.
+	 */
+	const GMouseVMT GMOUSE_DRIVER_VMT[1] = {{
 		{
 			GDRIVER_TYPE_MOUSE,
 			GMOUSE_VFLG_NOPOLL|GMOUSE_VFLG_DYNAMICONLY,
@@ -885,7 +889,7 @@ LLDSPEC gBool gdisp_lld_init(GDisplay *g) {
 	// Create the associated mouse
 	#if GFX_USE_GINPUT && GINPUT_NEED_MOUSE
 		priv->mouseenabled = hWndParent ? gFalse : gTrue;
-		priv->mouse = (GMouse *)gdriverRegister((const GDriverVMT const *)GMOUSE_DRIVER_VMT, g);
+		priv->mouse = (GMouse *)gdriverRegister((const GDriverVMT*)GMOUSE_DRIVER_VMT, g);
 	#endif
 
 	sprintf(buf, APP_NAME " - %u", g->systemdisplay+1);
diff --git a/src/gdisp/gdisp.c b/src/gdisp/gdisp.c
index 7b5438d7..f58ebf7e 100644
--- a/src/gdisp/gdisp.c
+++ b/src/gdisp/gdisp.c
@@ -555,15 +555,22 @@ static void line_clip(GDisplay *g) {
 /* Driver exported functions.                                                */
 /*===========================================================================*/
 
+// Gather GDISP VMT(S)
+// These are only needed in _gdispInit(). However, we want to prevent generating nested-externs compiler warnings.
+#if defined(GDISP_DRIVER_LIST)
+	extern GDISPVMTLIST GDISP_DRIVER_LIST;
+#else
+	extern const GDISPVMT GDISPVMT_OnlyOne[1];
+#endif
+
 void _gdispInit(void)
 {
 	// GDISP_DRIVER_LIST is defined - create each driver instance
 	#if defined(GDISP_DRIVER_LIST)
 		{
-			unsigned	i;
+			unsigned i;
 			typedef const GDISPVMT const GDISPVMTLIST[1];
 
-			extern GDISPVMTLIST						  GDISP_DRIVER_LIST;
 			static const GDISPVMT * const dclist[] = {GDISP_DRIVER_LIST};
 
 			for(i = 0; i < sizeof(dclist)/sizeof(dclist[0]); i++) {
@@ -573,8 +580,7 @@ void _gdispInit(void)
 		}
 	#elif GDISP_TOTAL_DISPLAYS > 1
 		{
-			unsigned	i;
-			extern const GDISPVMT const		GDISPVMT_OnlyOne[1];
+			unsigned i;
 
 			if (!(GDISPVMT_OnlyOne->d.flags & GDISP_VFLG_DYNAMICONLY)) {
 				for(i = 0; i < GDISP_TOTAL_DISPLAYS; i++)
@@ -583,8 +589,6 @@ void _gdispInit(void)
 		}
 	#else
 		{
-			extern const GDISPVMT const		GDISPVMT_OnlyOne[1];
-
 			if (!(GDISPVMT_OnlyOne->d.flags & GDISP_VFLG_DYNAMICONLY))
 				gdriverRegister(&GDISPVMT_OnlyOne->d, 0);
 		}
@@ -2881,6 +2885,10 @@ void gdispGBlitArea(GDisplay *g, gCoord x, gCoord y, gCoord cx, gCoord cy, gCoor
 				case gOrientationPortrait:
 					g->p.ptr = g->g.Width >= g->g.Height ? (void *)gOrientation90 : (void *)gOrientation0;
 					break;
+                                case gOrientation0:
+                                case gOrientation90:
+                                case gOrientation180:
+                                case gOrientation270:
 				default:
 					break;
 				}
diff --git a/src/gdisp/gdisp_driver.h b/src/gdisp/gdisp_driver.h
index 936e2657..327e0b0a 100644
--- a/src/gdisp/gdisp_driver.h
+++ b/src/gdisp/gdisp_driver.h
@@ -732,7 +732,11 @@ typedef struct GDISPVMT {
 	#endif
 
 	// Build the VMT
-	const GDISPVMT const GDISP_DRIVER_VMT[1] = {{
+	/*
+	 * This should read: const GDISPVMT const GDISP_DRIVER_VMT[1] = {{
+	 * However, some major C compilers complain about duplicate const specifiers although this is perfectly valid standard C.
+	 */
+	const GDISPVMT GDISP_DRIVER_VMT[1] = {{
 		{ GDRIVER_TYPE_DISPLAY, 0, sizeof(GDisplay), _gdispInitDriver, _gdispPostInitDriver, _gdispDeInitDriver },
 		gdisp_lld_init,
 		#if GDISP_HARDWARE_DEINIT
diff --git a/src/gdriver/gdriver.h b/src/gdriver/gdriver.h
index 2b3ef7da..6a1f2061 100644
--- a/src/gdriver/gdriver.h
+++ b/src/gdriver/gdriver.h
@@ -86,8 +86,16 @@ typedef struct GDriverVMT {
  * 				const GDriverVMT const * mylist = { DRIVER_LIST };
  * 				</code>
  *
+ * @note This could be one single typedef. However, some major compilers complain about duplicate const specifiers even though this is perfectly
+ *       valid standard C. As this problem has become worse over time we opt for splitting this into two separate typedefs to prevent these
+ *       compilers from throwing warnings.
+ *       The single typedef would look like this:
+ *       <code>
+ *           typedef const struct GDriverVMT const GDriverVMTList[1];
+ *       </code>
  */
-typedef const struct GDriverVMT const	GDriverVMTList[1];
+typedef const struct GDriverVMT ConstGDriverVMT;
+typedef ConstGDriverVMT const GDriverVMTList[1];
 
 /*===========================================================================*/
 /* External declarations.                                                    */
diff --git a/src/gfile/gfile.c b/src/gfile/gfile.c
index 720ab815..4f535c39 100644
--- a/src/gfile/gfile.c
+++ b/src/gfile/gfile.c
@@ -36,8 +36,11 @@
 /**
  * The order of the file-systems below determines the order
  * that they are searched to find a file.
+ *
+ * This should read: static const GFILEVMT const * FsArray[] = {
+ * However, some major C compilers complain about duplicate const specifiers although this is perfectly valid standard C.
  */
-static const GFILEVMT const * FsArray[] = {
+static const GFILEVMT* FsArray[] = {
 	#if GFILE_NEED_USERFS
 		&FsUSERVMT,
 	#endif
diff --git a/src/gfile/gfile_fs_rom.c b/src/gfile/gfile_fs_rom.c
index 56181086..57b27530 100644
--- a/src/gfile/gfile_fs_rom.c
+++ b/src/gfile/gfile_fs_rom.c
@@ -34,7 +34,12 @@ typedef struct ROMFS_DIRENTRY {
 
 #define ROMFS_DIRENTRY_HEAD		0
 #include "romfs_files.h"
-static const ROMFS_DIRENTRY const *FsROMHead = ROMFS_DIRENTRY_HEAD;
+
+/*
+ * This should be: static const ROMFS_DIRENTRY const *FsROMHead = ROMFS_DIRENTRY_HEAD;
+ * However, some major compilers complain about the duplicate const specifier even though this is perfectly valid standard C.
+ */
+static const ROMFS_DIRENTRY *FsROMHead = ROMFS_DIRENTRY_HEAD;
 
 typedef struct ROMFileList {
 	gfileList				fl;
diff --git a/src/ginput/ginput_mouse.c b/src/ginput/ginput_mouse.c
index 6d08e1f3..b3ef3d81 100644
--- a/src/ginput/ginput_mouse.c
+++ b/src/ginput/ginput_mouse.c
@@ -663,7 +663,11 @@ void _gmouseInit(void) {
 	// One and only one mouse
 	#else
 		{
-			extern const GMouseVMT const GMOUSEVMT_OnlyOne[1];
+			/*
+			 * This should be: extern const GMouseVMT const GMOUSEVMT_OnlyOne[1];
+			 * However, some major compilers complain about the duplicate const specifier even though this is perfectly valid standard C.
+			 */
+			extern const GMouseVMT GMOUSEVMT_OnlyOne[1];
 
             if (!(GMOUSEVMT_OnlyOne->d.flags & GMOUSE_VFLG_DYNAMICONLY))
 					gdriverRegister(&GMOUSEVMT_OnlyOne->d, GDISP);
diff --git a/src/gos/gos_chibios.c b/src/gos/gos_chibios.c
index 674d090f..9de04579 100644
--- a/src/gos/gos_chibios.c
+++ b/src/gos/gos_chibios.c
@@ -11,7 +11,7 @@
 
 #include <string.h>
 
-#if CH_KERNEL_MAJOR < 2 || CH_KERNEL_MAJOR > 5
+#if CH_KERNEL_MAJOR < 2 || CH_KERNEL_MAJOR > 6
 	#error "GOS: Unsupported version of ChibiOS"
 #endif
 
diff --git a/src/gos/gos_chibios.h b/src/gos/gos_chibios.h
index d2a8db3c..19b17b4e 100644
--- a/src/gos/gos_chibios.h
+++ b/src/gos/gos_chibios.h
@@ -35,7 +35,11 @@
 #endif
 typedef systime_t	gTicks;
 typedef cnt_t		gSemcount;
-typedef msg_t		gThreadreturn;
+#if CH_KERNEL_MAJOR >= 6
+	typedef void		gThreadreturn;
+#else
+	typedef msg_t		gThreadreturn;
+#endif
 typedef tprio_t		gThreadpriority;
 
 #define gSemMaxCount			((gSemcount)(((unsigned long)((gSemcount)(-1))) >> 1))
diff --git a/src/gos/gos_zephyr.h b/src/gos/gos_zephyr.h
index 3213d5ca..a1dfe778 100644
--- a/src/gos/gos_zephyr.h
+++ b/src/gos/gos_zephyr.h
@@ -6,7 +6,7 @@
  */
 
 /**
- * @file    src/gos/gos_zepyhr.h
+ * @file    src/gos/gos_zephyr.h
  * @brief   GOS - Operating System Support header file for Zephyr RTOS.
  *			Zephyr SDK 0.9.1
  */
diff --git a/src/gtrans/gtrans.c b/src/gtrans/gtrans.c
index 15630b20..ee2f3848 100644
--- a/src/gtrans/gtrans.c
+++ b/src/gtrans/gtrans.c
@@ -51,7 +51,7 @@ const char* gtransString(const char* string)
 	return _languageCurrent->strings[i];
 }
 
-const char* gtransIndex(unsigned index)
+const char* gtransIndex(gU32 index)
 {
 	if (!_languageCurrent) {
 		return 0;
diff --git a/src/gtrans/gtrans.h b/src/gtrans/gtrans.h
index d25b1c54..8abf0eab 100644
--- a/src/gtrans/gtrans.h
+++ b/src/gtrans/gtrans.h
@@ -27,7 +27,7 @@
  * @brief A table containing translated strings.
  */
 typedef struct transTable {
-	unsigned numEntries;    /**< The number of strings that this table contains */
+	gU32 numEntries;    /**< The number of strings that this table contains */
 	const char** strings;	/**< The translated strings */
 } transTable;
 
@@ -59,7 +59,7 @@ const char* gtransString(const char* string);
  *
  * @return The string at the given index of the current language or 0 if it doesn't exist.
  */
-const char* gtransIndex(unsigned index);
+const char* gtransIndex(gU32 index);
 
 /**
  * @brief Set the base language.
diff --git a/src/gwin/gwin_container.c b/src/gwin/gwin_container.c
index 88c6d8b1..b8cc07b2 100644
--- a/src/gwin/gwin_container.c
+++ b/src/gwin/gwin_container.c
@@ -200,8 +200,10 @@ void gwinContainerDraw_Std(GWidgetObject *gw, void *param) {
 
 		#undef gi
 	}
-#endif /* GDISP_NEED_IMAGE */ 
+#endif /* GDISP_NEED_IMAGE */
+
+/**
+ * @}
+ */
 
 #endif /* GFX_USE_GWIN && GWIN_NEED_CONTAINERS */
-
-/** @} */