diff --git a/targets/TARGET_NXP/TARGET_MCUXpresso_MCUS/TARGET_LPC/sleep.c b/targets/TARGET_NXP/TARGET_MCUXpresso_MCUS/TARGET_LPC/sleep.c
index 2137a21e5e..19eee31126 100644
--- a/targets/TARGET_NXP/TARGET_MCUXpresso_MCUS/TARGET_LPC/sleep.c
+++ b/targets/TARGET_NXP/TARGET_MCUXpresso_MCUS/TARGET_LPC/sleep.c
@@ -26,8 +26,8 @@ void hal_sleep(void)
 
 void hal_deepsleep(void)
 {
-    LPC_CLOCK_INTERNAL_IRC();
+    LPC_CLOCK_INTERNAL_IRC;
     /* Enter Deep Sleep mode */
     POWER_EnterDeepSleep(APP_EXCLUDE_FROM_DEEPSLEEP);
-    LPC_CLOCK_RUN();
+    LPC_CLOCK_RUN;
 }
diff --git a/targets/TARGET_NXP/TARGET_MCUXpresso_MCUS/TARGET_LPC546XX/TARGET_FF_LPC546XX/device.h b/targets/TARGET_NXP/TARGET_MCUXpresso_MCUS/TARGET_LPC546XX/TARGET_FF_LPC546XX/device.h
index de347c375d..01696e2f0f 100644
--- a/targets/TARGET_NXP/TARGET_MCUXpresso_MCUS/TARGET_LPC546XX/TARGET_FF_LPC546XX/device.h
+++ b/targets/TARGET_NXP/TARGET_MCUXpresso_MCUS/TARGET_LPC546XX/TARGET_FF_LPC546XX/device.h
@@ -25,8 +25,9 @@
      SYSCON_PDRUNCFG_PDEN_SRAM0_MASK | SYSCON_PDRUNCFG_PDEN_SRAM1_2_3_MASK)
 
 /* Defines used by the sleep code */
-#define LPC_CLOCK_INTERNAL_IRC BOARD_BootClockFRO12M
-#define LPC_CLOCK_RUN          BOARD_BootClockFROHF48M
+#define LPC_CLOCK_INTERNAL_IRC BOARD_BootClockFRO12M()
+#define LPC_CLOCK_RUN          ((SYSCON->DEVICE_ID0 == 0xFFF54628) ? \
+                                 BOARD_BootClockPLL220M() : BOARD_BootClockFROHF48M())
 
 #define DEVICE_ID_LENGTH       24
 
diff --git a/targets/TARGET_NXP/TARGET_MCUXpresso_MCUS/TARGET_LPC546XX/TARGET_LPCXpresso/device.h b/targets/TARGET_NXP/TARGET_MCUXpresso_MCUS/TARGET_LPC546XX/TARGET_LPCXpresso/device.h
index de347c375d..01696e2f0f 100644
--- a/targets/TARGET_NXP/TARGET_MCUXpresso_MCUS/TARGET_LPC546XX/TARGET_LPCXpresso/device.h
+++ b/targets/TARGET_NXP/TARGET_MCUXpresso_MCUS/TARGET_LPC546XX/TARGET_LPCXpresso/device.h
@@ -25,8 +25,9 @@
      SYSCON_PDRUNCFG_PDEN_SRAM0_MASK | SYSCON_PDRUNCFG_PDEN_SRAM1_2_3_MASK)
 
 /* Defines used by the sleep code */
-#define LPC_CLOCK_INTERNAL_IRC BOARD_BootClockFRO12M
-#define LPC_CLOCK_RUN          BOARD_BootClockFROHF48M
+#define LPC_CLOCK_INTERNAL_IRC BOARD_BootClockFRO12M()
+#define LPC_CLOCK_RUN          ((SYSCON->DEVICE_ID0 == 0xFFF54628) ? \
+                                 BOARD_BootClockPLL220M() : BOARD_BootClockFROHF48M())
 
 #define DEVICE_ID_LENGTH       24