diff --git a/src/flash/nor/stm32l4x.c b/src/flash/nor/stm32l4x.c
index 039938512..b6fa3d651 100644
--- a/src/flash/nor/stm32l4x.c
+++ b/src/flash/nor/stm32l4x.c
@@ -120,6 +120,12 @@
  * http://www.st.com/resource/en/reference_manual/dm00346336.pdf
  */
 
+/* STM32U5xxx series for reference.
+ *
+ * RM0456 (STM32U5xx)
+ * http://www.st.com/resource/en/reference_manual/dm00477635.pdf
+ */
+
 /* Erase time can be as high as 25ms, 10x this and assume it's toast... */
 
 #define FLASH_ERASE_TIMEOUT 250
@@ -346,7 +352,11 @@ static const struct stm32l4_rev stm32g49_g4axx_revs[] = {
 
 static const struct stm32l4_rev stm32u57_u58xx_revs[] = {
 	{ 0x1000, "A" }, { 0x1001, "Z" }, { 0x1003, "Y" }, { 0x2000, "B" },
-	{ 0x2001, "X" }, { 0x3000, "C" },
+	{ 0x2001, "X" }, { 0x3000, "C" }, { 0x3001, "W" },
+};
+
+static const struct stm32l4_rev stm32u59_u5axx_revs[] = {
+	{ 0x3001, "X" },
 };
 
 static const struct stm32l4_rev stm32wba5x_revs[] = {
@@ -574,6 +584,18 @@ static const struct stm32l4_part_info stm32l4_parts[] = {
 	  .otp_base              = 0x1FFF7000,
 	  .otp_size              = 1024,
 	},
+	{
+	  .id                    = DEVID_STM32U59_U5AXX,
+	  .revs                  = stm32u59_u5axx_revs,
+	  .num_revs              = ARRAY_SIZE(stm32u59_u5axx_revs),
+	  .device_str            = "STM32U59/U5Axx",
+	  .max_flash_size_kb     = 4096,
+	  .flags                 = F_HAS_DUAL_BANK | F_QUAD_WORD_PROG | F_HAS_TZ | F_HAS_L5_FLASH_REGS,
+	  .flash_regs_base       = 0x40022000,
+	  .fsize_addr            = 0x0BFA07A0,
+	  .otp_base              = 0x0BFA0000,
+	  .otp_size              = 512,
+	},
 	{
 	  .id                    = DEVID_STM32U57_U58XX,
 	  .revs                  = stm32u57_u58xx_revs,
@@ -2000,9 +2022,10 @@ static int stm32l4_probe(struct flash_bank *bank)
 			stm32l4_info->bank1_sectors = num_pages / 2;
 		}
 		break;
+	case DEVID_STM32U59_U5AXX:
 	case DEVID_STM32U57_U58XX:
-		/* if flash size is max (2M) the device is always dual bank
-		 * otherwise check DUALBANK
+		/* if flash size is more than 1M the device is always dual bank
+		 * otherwise check DUALBANK bit
 		 */
 		page_size_kb = 8;
 		num_pages = flash_size_kb / page_size_kb;
diff --git a/src/flash/nor/stm32l4x.h b/src/flash/nor/stm32l4x.h
index 3dc090955..95b6c84a6 100644
--- a/src/flash/nor/stm32l4x.h
+++ b/src/flash/nor/stm32l4x.h
@@ -102,6 +102,7 @@
 #define DEVID_STM32L4P_L4QXX	0x471
 #define DEVID_STM32L55_L56XX	0x472
 #define DEVID_STM32G49_G4AXX	0x479
+#define DEVID_STM32U59_U5AXX	0x481
 #define DEVID_STM32U57_U58XX	0x482
 #define DEVID_STM32WBA5X		0x492
 #define DEVID_STM32WB1XX		0x494