diff --git a/drivers/mm/mm_drv_bank.c b/drivers/mm/mm_drv_bank.c
index 14b4b40613a..af3ced8171d 100644
--- a/drivers/mm/mm_drv_bank.c
+++ b/drivers/mm/mm_drv_bank.c
@@ -15,24 +15,22 @@
  */
 
 #include <zephyr/kernel.h>
-
+#include <zephyr/sys/__assert.h>
 #include <zephyr/drivers/mm/mm_drv_bank.h>
 #include <zephyr/sys/mem_stats.h>
 
 void sys_mm_drv_bank_init(struct mem_drv_bank *bank, uint32_t bank_pages)
 {
-	bank->unmapped_pages = bank_pages;
-	bank->mapped_pages = 0;
-	bank->max_mapped_pages = 0;
+	bank->unmapped_pages = 0;
+	bank->mapped_pages = bank_pages;
+	bank->max_mapped_pages = bank_pages;
 }
 
 uint32_t sys_mm_drv_bank_page_mapped(struct mem_drv_bank *bank)
 {
 	bank->unmapped_pages--;
 	bank->mapped_pages++;
-	if (bank->mapped_pages > bank->max_mapped_pages) {
-		bank->max_mapped_pages = bank->mapped_pages;
-	}
+	__ASSERT_NO_MSG(bank->mapped_pages <= bank->max_mapped_pages);
 	return bank->mapped_pages;
 }
 
@@ -40,7 +38,7 @@ uint32_t sys_mm_drv_bank_page_unmapped(struct mem_drv_bank *bank)
 {
 	bank->unmapped_pages++;
 	bank->mapped_pages--;
-
+	__ASSERT_NO_MSG(bank->unmapped_pages <= bank->max_mapped_pages);
 	return bank->unmapped_pages;
 }
 
diff --git a/drivers/mm/mm_drv_intel_adsp_mtl_tlb.c b/drivers/mm/mm_drv_intel_adsp_mtl_tlb.c
index 504b51e6e5a..c75c3d9f0fd 100644
--- a/drivers/mm/mm_drv_intel_adsp_mtl_tlb.c
+++ b/drivers/mm/mm_drv_intel_adsp_mtl_tlb.c
@@ -378,7 +378,7 @@ int sys_mm_drv_unmap_page(void *virt)
 		sys_mm_drv_report_page_usage();
 #endif
 
-		if (sys_mm_drv_bank_page_unmapped(&hpsram_bank[bank_idx]) == 0) {
+		if (sys_mm_drv_bank_page_unmapped(&hpsram_bank[bank_idx]) == SRAM_BANK_PAGE_NUM) {
 			sys_mm_drv_hpsram_pwr(bank_idx, false, false);
 		}
 	}
@@ -649,7 +649,7 @@ static int sys_mm_drv_mm_init(const struct device *dev)
 	 */
 	for (int i = 0; i < L2_SRAM_BANK_NUM; i++) {
 		sys_mm_drv_bank_init(&hpsram_bank[i],
-				     SRAM_BANK_SIZE / CONFIG_MM_DRV_PAGE_SIZE);
+				     SRAM_BANK_PAGE_NUM);
 	}
 #ifdef CONFIG_SOC_INTEL_COMM_WIDGET
 	used_pages = L2_SRAM_BANK_NUM * SRAM_BANK_SIZE / CONFIG_MM_DRV_PAGE_SIZE;
diff --git a/include/zephyr/drivers/mm/mm_drv_bank.h b/include/zephyr/drivers/mm/mm_drv_bank.h
index 1b53e9c2131..9e1a51ebcbf 100644
--- a/include/zephyr/drivers/mm/mm_drv_bank.h
+++ b/include/zephyr/drivers/mm/mm_drv_bank.h
@@ -21,6 +21,8 @@
 #include <zephyr/sys/mem_stats.h>
 #include <stdint.h>
 
+#define SRAM_BANK_PAGE_NUM   (SRAM_BANK_SIZE / CONFIG_MM_DRV_PAGE_SIZE)
+
 struct mem_drv_bank {
 	uint32_t  unmapped_pages;
 	uint32_t  mapped_pages;
@@ -32,7 +34,9 @@ struct mem_drv_bank {
  *
  * The driver may wish to track various information about the memory banks
  * that it uses. This routine will initialize a generic structure containing
- * that information.
+ * that information. Since at the power on all memory banks are switched on
+ * it will start with all pages mapped. In next phase of driver initialization
+ * unused pages will be unmapped.
  *
  * @param bank Pointer to the memory bank structure used for tracking
  * @param bank_pages Number of pages in the memory bank
diff --git a/tests/drivers/mm/sys_mm_drv_bank/src/main.c b/tests/drivers/mm/sys_mm_drv_bank/src/main.c
index 786c24f662d..9c834c5efa5 100644
--- a/tests/drivers/mm/sys_mm_drv_bank/src/main.c
+++ b/tests/drivers/mm/sys_mm_drv_bank/src/main.c
@@ -34,10 +34,15 @@ ZTEST(sys_mm_bank_api, test_sys_mm_drv_bank)
 	struct sys_memory_stats stats;
 	struct sys_memory_stats expected;
 	uint32_t  count;
+	uint32_t index;
 
 	/* Verify that the initialization routine works as expected. */
-
+	/* It set mapped state for all pages                         */
 	sys_mm_drv_bank_init(&bank_data, BANK_PAGES);
+	/* Now unmap all pages */
+	for (index = 0; index < BANK_PAGES; index++) {
+		sys_mm_drv_bank_page_unmapped(&bank_data);
+	}
 
 	expected.free_bytes = EXPECTED(BANK_PAGES);
 	expected.allocated_bytes = EXPECTED(0);