diff --git a/sw/include/car_util.h b/sw/include/car_util.h
index 99945ff0..edbc08a2 100644
--- a/sw/include/car_util.h
+++ b/sw/include/car_util.h
@@ -204,6 +204,10 @@ void car_disable_domain(enum car_rst rst)
     car_set_isolate(rst, CAR_ISOLATE_ENABLE);
 }
 
+// Init clock after PoR. Define if required (for PLL configuration, clk mux selection signals, clk
+// dividers division values, etc)
+void car_clk_init(void) __attribute__((weak));
+
 // De-isolate and ungate domains at startup. In non-secure boot mode, only the host domain is
 // de-isolated and ungated after POR. In secure boot mode, both the host domain and the security
 // domain are de-isolated and ungated after POR. Note that L2 and peripheral domain are always-on
@@ -225,6 +229,7 @@ void car_enable_all_domains()
 
 void car_init_start()
 {
+    car_clk_init();
     car_enable_all_domains();
 }
 
diff --git a/sw/sw.mk b/sw/sw.mk
index d8b9eb76..e001e686 100644
--- a/sw/sw.mk
+++ b/sw/sw.mk
@@ -26,7 +26,7 @@ CAR_SW_LIB_SRCS_S  = $(wildcard $(CAR_SW_DIR)/lib/*.S $(CAR_SW_DIR)/lib/**/*.S)
 CAR_SW_LIB_SRCS_C  = $(wildcard $(CAR_SW_DIR)/lib/*.c $(CAR_SW_DIR)/lib/**/*.c)
 CAR_SW_LIB_SRCS_O  = $(CAR_SW_DEPS_SRCS:.c=.o) $(CAR_SW_LIB_SRCS_S:.S=.o) $(CAR_SW_LIB_SRCS_C:.c=.o)
 
-CAR_SW_LIBS = $(CAR_SW_DIR)/lib/libcarfield.a
+CAR_SW_LIBS += $(CAR_SW_DIR)/lib/libcarfield.a
 
 $(CAR_SW_DIR)/lib/libcarfield.a: $(CAR_SW_LIB_SRCS_O)
 	$(CHS_SW_AR) $(CHS_SW_ARFLAGS) -rcsv $@ $^