diff --git a/lv_conf_template.h b/lv_conf_template.h
index b87dddf2b..d1f0ed96e 100644
--- a/lv_conf_template.h
+++ b/lv_conf_template.h
@@ -177,8 +177,7 @@ typedef void * lv_group_user_data_t;
 
 /* 1: Enable GPU interface*/
 #define LV_USE_GPU              1
-#define LV_GPU_INCLUDE  <stdint.h> /*E.g. "stm32f7xx_hal.h"*/
-#define LV_USE_GPU_STM32_DMA2D  1
+#define LV_USE_GPU_STM32_DMA2D  0
 
 /* 1: Enable file system (might be required for images */
 #define LV_USE_FILESYSTEM       1
diff --git a/src/lv_conf_internal.h b/src/lv_conf_internal.h
index 338afd0a7..325501ddc 100644
--- a/src/lv_conf_internal.h
+++ b/src/lv_conf_internal.h
@@ -263,11 +263,8 @@
 #ifndef LV_USE_GPU
 #define LV_USE_GPU              1
 #endif
-#ifndef LV_GPU_INCLUDE
-#define LV_GPU_INCLUDE  <stdint.h> /*E.g. "stm32f7xx_hal.h"*/
-#endif
 #ifndef LV_USE_GPU_STM32_DMA2D
-#define LV_USE_GPU_STM32_DMA2D  1
+#define LV_USE_GPU_STM32_DMA2D  0
 #endif
 
 /* 1: Enable file system (might be required for images */
diff --git a/src/lv_gpu/lv_gpu_stm32_dma2d.c b/src/lv_gpu/lv_gpu_stm32_dma2d.c
index 4ecee6e7f..38c682558 100644
--- a/src/lv_gpu/lv_gpu_stm32_dma2d.c
+++ b/src/lv_gpu/lv_gpu_stm32_dma2d.c
@@ -46,6 +46,16 @@ static DMA2D_HandleTypeDef hdma2d;
 /**********************
  *   GLOBAL FUNCTIONS
  **********************/
+
+/**
+ * Fill an area in the buffer with a color
+ * @param buf a buffer which should be filled
+ * @param buf_w width of the buffer in pixels
+ * @param color fill color
+ * @param fill_w width to fill in pixels (<= buf_w)
+ * @param fill_h height to fill in pixels
+ * @note `buf_w - fill_w` is offset to the next line after fill
+ */
 void lv_gpu_stm32_dma2d_fill(lv_color_t * buf, lv_coord_t buf_w, lv_color_t color, lv_coord_t fill_w, lv_coord_t fill_h)
 {
 #if __DCACHE_PRESENT
@@ -68,6 +78,17 @@ void lv_gpu_stm32_dma2d_fill(lv_color_t * buf, lv_coord_t buf_w, lv_color_t colo
     }
 }
 
+/**
+ * Fill an area in the buffer with a color but take into account a mask which describes the opacity of each pixel
+ * @param buf a buffer which should be filled using a mask
+ * @param buf_w width of the buffer in pixels
+ * @param color fill color
+ * @param mask 0..255 values describing the opacity of the corresponding pixel. It's width is `fill_w`
+ * @param opa overall opacity. 255 in `mask` should mean this opacity.
+ * @param fill_w width to fill in pixels (<= buf_w)
+ * @param fill_h height to fill in pixels
+ * @note `buf_w - fill_w` is offset to the next line after fill
+ */
 void lv_gpu_stm32_dma2d_fill_mask(lv_color_t * buf, lv_coord_t buf_w, lv_color_t color, const lv_opa_t * mask, lv_opa_t opa, lv_coord_t fill_w, lv_coord_t fill_h)
 {
 #if __DCACHE_PRESENT
@@ -101,6 +122,16 @@ void lv_gpu_stm32_dma2d_fill_mask(lv_color_t * buf, lv_coord_t buf_w, lv_color_t
     HAL_DMA2D_PollForTransfer(&hdma2d, HAL_MAX_DELAY);
 }
 
+/**
+ * Copy a map (typically RGB image) to a buffer
+ * @param buf a buffer where map should be copied
+ * @param buf_w width of the buffer in pixels
+ * @param map an "image" to copy
+ * @param map_w width of teh map in pixels
+ * @param copy_w width of the area to copy in pixels (<= buf_w)
+ * @param copy_h height of the area to copy in pixels
+ * @note `map_w - fill_w` is offset to the next line after copy
+ */
 void lv_gpu_stm32_dma2d_copy(lv_color_t * buf, lv_coord_t buf_w, const lv_color_t * map, lv_coord_t map_w, lv_coord_t copy_w, lv_coord_t copy_h)
 {
 #if __DCACHE_PRESENT
@@ -128,6 +159,17 @@ void lv_gpu_stm32_dma2d_copy(lv_color_t * buf, lv_coord_t buf_w, const lv_color_
     }
 }
 
+/**
+ * Blend a map (e.g. ARGB image or RGB image with opacity) to a buffer
+ * @param buf a buffer where `map` should be copied
+ * @param buf_w width of the buffer in pixels
+ * @param map an "image" to copy
+ * @param opa opacity of `map`
+ * @param map_w width of teh map in pixels
+ * @param copy_w width of the area to copy in pixels (<= buf_w)
+ * @param copy_h height of the area to copy in pixels
+ * @note `map_w - fill_w` is offset to the next line after copy
+ */
 void lv_gpu_stm32_dma2d_blend(lv_color_t * buf, lv_coord_t buf_w, const lv_color_t * map, lv_opa_t opa, lv_coord_t map_w, lv_coord_t copy_w, lv_coord_t copy_h)
 {
 #if __DCACHE_PRESENT
diff --git a/src/lv_gpu/lv_gpu_stm32_dma2d.h b/src/lv_gpu/lv_gpu_stm32_dma2d.h
index c6c21107c..65db95bda 100644
--- a/src/lv_gpu/lv_gpu_stm32_dma2d.h
+++ b/src/lv_gpu/lv_gpu_stm32_dma2d.h
@@ -27,11 +27,55 @@ extern "C" {
 /**********************
  * GLOBAL PROTOTYPES
  **********************/
-void lv_gpu_stm32_dma2d_fill(lv_color_t * buf, lv_coord_t buf_w, lv_color_t color, lv_coord_t fill_w, lv_coord_t fill_h);
-void lv_gpu_stm32_dma2d_copy(lv_color_t * buf, lv_coord_t buf_w, const lv_color_t * map, lv_coord_t map_w, lv_coord_t copy_w, lv_coord_t copy_h);
-void lv_gpu_stm32_dma2d_blend(lv_color_t * buf, lv_coord_t buf_w, const lv_color_t * map, lv_opa_t opa, lv_coord_t map_w, lv_coord_t copy_w, lv_coord_t copy_h);
-void lv_gpu_stm32_dma2d_fill_mask(lv_color_t * buf, lv_coord_t buf_w, lv_color_t color, const lv_opa_t * mask,  lv_opa_t opa, lv_coord_t fill_w, lv_coord_t fill_h);
 
+/**
+ * Fill an area in the buffer with a color
+ * @param buf a buffer which should be filled
+ * @param buf_w width of the buffer in pixels
+ * @param color fill color
+ * @param fill_w width to fill in pixels (<= buf_w)
+ * @param fill_h height to fill in pixels
+ * @note `buf_w - fill_w` is offset to the next line after fill
+ */
+void lv_gpu_stm32_dma2d_fill(lv_color_t * buf, lv_coord_t buf_w, lv_color_t color, lv_coord_t fill_w, lv_coord_t fill_h);
+
+
+/**
+ * Fill an area in the buffer with a color but take into account a mask which describes the opacity of each pixel
+ * @param buf a buffer which should be filled using a mask
+ * @param buf_w width of the buffer in pixels
+ * @param color fill color
+ * @param mask 0..255 values describing the opacity of the corresponding pixel. It's width is `fill_w`
+ * @param opa overall opacity. 255 in `mask` should mean this opacity.
+ * @param fill_w width to fill in pixels (<= buf_w)
+ * @param fill_h height to fill in pixels
+ * @note `buf_w - fill_w` is offset to the next line after fill
+ */
+void lv_gpu_stm32_dma2d_fill_mask(lv_color_t * buf, lv_coord_t buf_w, lv_color_t color, const lv_opa_t * mask, lv_opa_t opa, lv_coord_t fill_w, lv_coord_t fill_h);
+
+/**
+ * Copy a map (typically RGB image) to a buffer
+ * @param buf a buffer where map should be copied
+ * @param buf_w width of the buffer in pixels
+ * @param map an "image" to copy
+ * @param map_w width of teh map in pixels
+ * @param copy_w width of the area to copy in pixels (<= buf_w)
+ * @param copy_h height of the area to copy in pixels
+ * @note `map_w - fill_w` is offset to the next line after copy
+ */
+void lv_gpu_stm32_dma2d_copy(lv_color_t * buf, lv_coord_t buf_w, const lv_color_t * map, lv_coord_t map_w, lv_coord_t copy_w, lv_coord_t copy_h);
+/**
+ * Blend a map (e.g. ARGB image or RGB image with opacity) to a buffer
+ * @param buf a buffer where `map` should be copied
+ * @param buf_w width of the buffer in pixels
+ * @param map an "image" to copy
+ * @param opa opacity of `map`
+ * @param map_w width of teh map in pixels
+ * @param copy_w width of the area to copy in pixels (<= buf_w)
+ * @param copy_h height of the area to copy in pixels
+ * @note `map_w - fill_w` is offset to the next line after copy
+ */
+void lv_gpu_stm32_dma2d_blend(lv_color_t * buf, lv_coord_t buf_w, const lv_color_t * map, lv_opa_t opa, lv_coord_t map_w, lv_coord_t copy_w, lv_coord_t copy_h);
 /**********************
  *      MACROS
  **********************/