diff --git a/drivers/mm/mm_drv_intel_adsp_mtl_tlb.c b/drivers/mm/mm_drv_intel_adsp_mtl_tlb.c
index bd66f54fccb..0114ab83554 100644
--- a/drivers/mm/mm_drv_intel_adsp_mtl_tlb.c
+++ b/drivers/mm/mm_drv_intel_adsp_mtl_tlb.c
@@ -642,6 +642,15 @@ static int sys_mm_drv_mm_init(const struct device *dev)
 
 	ARG_UNUSED(dev);
 
+	/*
+	 * Change size of avalible physical memory according to fw register information
+	 * in runtime.
+	 */
+
+	uint32_t avalible_memory_size = ace_hpsram_get_bank_count() * SRAM_BANK_SIZE;
+
+	L2_PHYS_SRAM_REGION.num_blocks = avalible_memory_size / CONFIG_MM_DRV_PAGE_SIZE;
+
 	/*
 	 * Initialize memblocks that will store physical
 	 * page usage. Initially all physical pages are