# 2D Direct Memory Access (DMA2D) Support (/integration/chip_vendors/espressif/hardware_accelerator_dma2d)



Overview [#overview]

Some Espressif chips, such as the ESP32-P4 family, feature a peripheral that speeds up
copying 2-D data from one place to another, including sending that 2-D data to other
peripherals.

This peripheral is the 2-D direct memory access, or DMA2D. ESP-IDF offers a full-featured
driver for it that is automatically enabled on the supported chips.

One of its primary roles is to support the Pixel Processing Accelerator (PPA): it copies the
source image data to the desired PPA client, splitting the data into fixed size blocks called
bursts. The DMA2D is also used to pick the output chunks from the PPA client and copy them to
the destination buffer, or the display frame buffer.

More information about PPA can be found in: [PPA (Pixel Processing Accelerator) Support](/integration/chip_vendors/espressif/hardware_accelerator_ppa).

Interacting with the DMA2D [#interacting-with-the-dma2d]

LVGL does not interact with the DMA2D directly. Instead, the display driver of the Espressif
LVGL port component uses the DMA2D to copy the drawn buffer to the display buffer without CPU
intervention. This has to be enabled explicitly on the display driver of the port component.

To enable it, set `CONFIG_BSP_DISPLAY_LVGL_AVOID_TEAR` in your `sdkconfig.defaults`, which tells
the driver to use the DMA2D to optimize the transfer.

<Callout type="warn">
  This option is only available when using PSRAM memory and double buffer mode, otherwise a
  compiler error is raised.
</Callout>

If you configure the display manually, the DMA2D can be enabled at runtime by setting the DMA2D
flag to true:

```c title=" " lineNumbers=1
/* Gets the default configuration for the MIPI display controller */
esp_lcd_dpi_panel_config_t dpi_config = EK79007_1024_600_PANEL_60HZ_CONFIG(LCD_COLOR_PIXEL_FORMAT_RGB888);

/* Explicitly set the DMA2D to assist the buffer transfer */
dpi_config.flags.use_dma2d = true;

ek79007_vendor_config_t vendor_config = {
    .mipi_config = {
        .dsi_bus = mipi_dsi_bus,
        .dpi_config = &dpi_config,
    },
};

esp_lcd_panel_dev_config_t lcd_dev_config = {
    .reset_gpio_num = UI_FIRMWARE_PIN_NUM_LCD_RST,
    .rgb_ele_order = LCD_RGB_ELEMENT_ORDER_RGB,
    .bits_per_pixel = 24,
    .vendor_config = &vendor_config,
};

/* Configures and enable the display */
ESP_ERROR_CHECK(esp_lcd_new_panel_ek79007(mipi_dbi_io, &lcd_dev_config, &mipi_dpi_panel));
```