diff --git a/core/embed/trezorhal/stm32f4/dma2d_bitblt.c b/core/embed/trezorhal/stm32f4/dma2d_bitblt.c
index b2d20f949..ae2d809a0 100644
--- a/core/embed/trezorhal/stm32f4/dma2d_bitblt.c
+++ b/core/embed/trezorhal/stm32f4/dma2d_bitblt.c
@@ -56,19 +56,6 @@ void dma2d_rgb565_fill(const gl_bitblt_t* bb) {
     HAL_DMA2D_Start(&dma2d_handle, gl_color_to_color32(bb->src_fg),
                     (uint32_t)bb->dst_row + bb->dst_x * sizeof(uint16_t),
                     bb->width, bb->height);
-    /*
-
-        MODIFY_REG(dma2d_handle.Instance->CR, DMA2D_CR_MODE, DMA2D_R2M);
-        MODIFY_REG(dma2d_handle.Instance->OPFCCR, DMA2D_OPFCCR_CM,
-       DMA2D_OUTPUT_RGB565); MODIFY_REG(dma2d_handle.Instance->OOR,
-       DMA2D_OOR_LO, bb->dst_stride / sizeof(uint16_t) - bb->width);
-        MODIFY_REG(dma2d_handle.Instance->NLR, (DMA2D_NLR_NL|DMA2D_NLR_PL),
-       (bb->height| (bb->width << 16))); WRITE_REG(dma2d_handle.Instance->OMAR,
-       (uint32_t)bb->dst_row + bb->dst_x * sizeof(uint16_t));
-        WRITE_REG(dma2d_handle.Instance->OCOLR,
-       gl_color_to_color32(bb->src_fg));
-         ((dma2d_handle).Instance->CR |= DMA2D_CR_START);
-    */
   } else {
 #ifdef STM32U5
     dma2d_handle.Init.ColorMode = DMA2D_OUTPUT_RGB565;
@@ -111,42 +98,6 @@ void dma2d_rgb565_fill(const gl_bitblt_t* bb) {
   }
 }
 
-/*
-static void dma2d_config_clut(uint32_t layer, gl_color_t fg, gl_color_t bg) {
-
-  #define LAYER_COUNT 2
-  #define GRADIENT_STEPS 16
-
-  static struct {
-    gl_color32_t gradient[GRADIENT_STEPS];
-  } cache[LAYER_COUNT] = { 0 };
-
-  if (layer >= LAYER_COUNT) {
-    return;
-  }
-
-  uint32_t c_fg = gl_color_to_color32(fg);
-  uint32_t c_bg = gl_color_to_color32(bg);
-
-  uint32_t* gradient = cache[layer].gradient;
-
-  if (c_bg != gradient[0] || c_fg != gradient[GRADIENT_STEPS - 1]) {
-     for (int step = 0; step < GRADIENT_STEPS; step++) {
-       gradient[step] = gl_color32_blend_a4(fg, bg, step);
-     }
-
-    DMA2D_CLUTCfgTypeDef clut;
-    clut.CLUTColorMode = DMA2D_CCM_ARGB8888;
-    clut.Size = GRADIENT_STEPS - 1;
-    clut.pCLUT = gradient;
-
-    HAL_DMA2D_ConfigCLUT(&dma2d_handle, clut, layer);
-
-    while (HAL_DMA2D_PollForTransfer(&dma2d_handle, 10) != HAL_OK)
-        ;
-  }
-}*/
-
 static void dma2d_config_clut(uint32_t layer, gl_color_t fg, gl_color_t bg) {
 #define LAYER_COUNT 2
 #define GRADIENT_STEPS 16