diff --git a/app/Kconfig b/app/Kconfig
index 56ada456367e..339a16bed3e8 100644
--- a/app/Kconfig
+++ b/app/Kconfig
@@ -1,9 +1,6 @@
 config SCHED_CPU_MASK_PIN_ONLY
 	default y if SMP
 
-config SMP_BOOT_DELAY
-	default y if SMP
-
 # Allow compiler to determine whether to generate FLIX instructions.
 choice COMPILER_CODEGEN_VLIW
 	default COMPILER_CODEGEN_VLIW_AUTO if "$(ZEPHYR_TOOLCHAIN_VARIANT)" = "xt-clang"
diff --git a/src/schedule/zephyr_domain.c b/src/schedule/zephyr_domain.c
index 681b0c872f58..0bf5dd88aec5 100644
--- a/src/schedule/zephyr_domain.c
+++ b/src/schedule/zephyr_domain.c
@@ -24,7 +24,7 @@
 #include <stdint.h>
 
 #include <zephyr/kernel.h>
-#include <zephyr/sys_clock.h>
+#include <zephyr/sys/clock.h>
 
 LOG_MODULE_DECLARE(ll_schedule, CONFIG_SOF_LOG_LEVEL);
 
diff --git a/src/schedule/zephyr_dp_schedule.c b/src/schedule/zephyr_dp_schedule.c
index 7beb739d1b09..38411bd12a1d 100644
--- a/src/schedule/zephyr_dp_schedule.c
+++ b/src/schedule/zephyr_dp_schedule.c
@@ -18,7 +18,7 @@
 #include <rtos/wait.h>
 #include <rtos/interrupt.h>
 #include <zephyr/kernel.h>
-#include <zephyr/sys_clock.h>
+#include <zephyr/sys/clock.h>
 #include <zephyr/sys/sem.h>
 #include <zephyr/sys/mutex.h>
 #include <sof/lib/memory.h>
diff --git a/src/schedule/zephyr_twb_schedule.c b/src/schedule/zephyr_twb_schedule.c
index 5e85cbf61134..82bf4abf7d6e 100644
--- a/src/schedule/zephyr_twb_schedule.c
+++ b/src/schedule/zephyr_twb_schedule.c
@@ -19,7 +19,7 @@
 #include <zephyr/init.h>
 #include <zephyr/kernel.h>
 #include <zephyr/kernel/thread.h>
-#include <zephyr/sys_clock.h>
+#include <zephyr/sys/clock.h>
 
 LOG_MODULE_REGISTER(twb_schedule, CONFIG_SOF_LOG_LEVEL);
 SOF_DEFINE_REG_UUID(twb_sched);
diff --git a/west.yml b/west.yml
index a684deb8871a..7cd14a6093c7 100644
--- a/west.yml
+++ b/west.yml
@@ -43,7 +43,7 @@ manifest:
 
     - name: zephyr
       repo-path: zephyr
-      revision: fbd71c30f7b9083de9826577edb57d360efc01ed
+      revision: 133c2eb7d3cb4625f74cbeb3e8d99a705b21543d
       remote: zephyrproject
 
       # Import some projects listed in zephyr/west.yml@revision
diff --git a/zephyr/edf_schedule.c b/zephyr/edf_schedule.c
index 2a432ec8df68..f00ad28b217a 100644
--- a/zephyr/edf_schedule.c
+++ b/zephyr/edf_schedule.c
@@ -13,7 +13,7 @@
 #include <rtos/wait.h>
 
 #include <zephyr/kernel.h>
-#include <zephyr/sys_clock.h>
+#include <zephyr/sys/clock.h>
 
 static struct k_work_q edf_workq;
 static K_THREAD_STACK_DEFINE(edf_workq_stack, CONFIG_STACK_SIZE_EDF);