fix(dma): fix dma alignment when flash_enc enabled

Closes https://github.com/espressif/esp-idf/issues/17708

components/esp_mm/heap_align_hw.c

@@ -1,5 +1,5 @@
 /*
- * SPDX-FileCopyrightText: 2019-2024 Espressif Systems (Shanghai) CO LTD
+ * SPDX-FileCopyrightText: 2019-2025 Espressif Systems (Shanghai) CO LTD
  *
  * SPDX-License-Identifier: Apache-2.0
  */
@@ -9,9 +9,11 @@
 #include "sdkconfig.h"
 #include "esp_heap_caps.h"
 #include "esp_private/esp_cache_private.h"
+#include "esp_private/gdma.h"
 #include "soc/soc_caps.h"
 #if SOC_GDMA_SUPPORTED
 #include "hal/gdma_ll.h"
+#include "hal/efuse_hal.h"
 #endif
 
 #if CONFIG_HEAP_PLACE_FUNCTION_INTO_FLASH
@@ -80,6 +82,12 @@ HEAP_IRAM_ATTR void esp_heap_adjust_alignment_to_hw(size_t *p_alignment, size_t
     }
 #endif
 
+#if SOC_GDMA_SUPPORTED && (SOC_PSRAM_DMA_CAPABLE || SOC_DMA_CAN_ACCESS_FLASH)
+    if ((caps & MALLOC_CAP_DMA) && efuse_hal_flash_encryption_enabled()) {
+        alignment = (alignment > GDMA_LL_GET(ACCESS_ENCRYPTION_MEM_ALIGNMENT)) ? alignment : GDMA_LL_GET(ACCESS_ENCRYPTION_MEM_ALIGNMENT);
+    }
+#endif
+
     // Align up `size` to resulting alignment as well.
     size = (size + alignment - 1) & (~(alignment - 1));