diff --git a/boards/common/blxxxpill/include/periph_conf.h b/boards/common/blxxxpill/include/periph_conf.h
index f6ad5a7799..9439892737 100644
--- a/boards/common/blxxxpill/include/periph_conf.h
+++ b/boards/common/blxxxpill/include/periph_conf.h
@@ -25,7 +25,14 @@
 #define PERIPH_CONF_H
 
 /* blxxxpill boards provide an LSE */
-#define CLOCK_LSE            (1)
+#ifndef CONFIG_BOARD_HAS_LSE
+#define CONFIG_BOARD_HAS_LSE    1
+#endif
+
+/* blxxxpill boards provide an HSE */
+#ifndef CONFIG_BOARD_HAS_HSE
+#define CONFIG_BOARD_HAS_HSE    1
+#endif
 
 #include "periph_cpu.h"
 #include "f1f3/cfg_clock_default.h"
diff --git a/boards/common/iotlab/include/periph_conf_common.h b/boards/common/iotlab/include/periph_conf_common.h
index 0a0b6ebf1a..17c2edeeee 100644
--- a/boards/common/iotlab/include/periph_conf_common.h
+++ b/boards/common/iotlab/include/periph_conf_common.h
@@ -21,13 +21,15 @@
 #define PERIPH_CONF_COMMON_H
 
 /* iotlab boards provide an LSE */
-#define CLOCK_LSE            (1)
+#ifndef CONFIG_BOARD_HAS_LSE
+#define CONFIG_BOARD_HAS_LSE    1
+#endif
 
 /* HSE is clocked at 16MHz */
-#define CLOCK_HSE            MHZ(16)
-
-/* Adjust PLL predevider to reach 72MHz sysclock */
-#define CLOCK_PLL_PREDIV     (2)
+#ifndef CONFIG_BOARD_HAS_HSE
+#define CONFIG_BOARD_HAS_HSE    1
+#endif
+#define CLOCK_HSE               MHZ(16)
 
 #include "periph_cpu.h"
 #include "f1f3/cfg_clock_default.h"
diff --git a/boards/fox/include/periph_conf.h b/boards/fox/include/periph_conf.h
index c308261c31..1047e61a77 100644
--- a/boards/fox/include/periph_conf.h
+++ b/boards/fox/include/periph_conf.h
@@ -19,14 +19,16 @@
 #ifndef PERIPH_CONF_H
 #define PERIPH_CONF_H
 
-/* iotlab boards provide an LSE */
-#define CLOCK_LSE            (1)
+/* This board provides an LSE */
+#ifndef CONFIG_BOARD_HAS_LSE
+#define CONFIG_BOARD_HAS_LSE    1
+#endif
 
 /* HSE is clocked at 16MHz */
-#define CLOCK_HSE            MHZ(16)
-
-/* Adjust PLL predevider to reach 72MHz sysclock */
-#define CLOCK_PLL_PREDIV     (2)
+#ifndef CONFIG_BOARD_HAS_HSE
+#define CONFIG_BOARD_HAS_HSE    1
+#endif
+#define CLOCK_HSE               MHZ(16)
 
 #include "periph_cpu.h"
 #include "f1f3/cfg_clock_default.h"
diff --git a/boards/nucleo-f103rb/include/periph_conf.h b/boards/nucleo-f103rb/include/periph_conf.h
index 4205f526aa..73765a9d74 100644
--- a/boards/nucleo-f103rb/include/periph_conf.h
+++ b/boards/nucleo-f103rb/include/periph_conf.h
@@ -20,7 +20,14 @@
 #define PERIPH_CONF_H
 
 /* This board provides an LSE */
-#define CLOCK_LSE            (1)
+#ifndef CONFIG_BOARD_HAS_LSE
+#define CONFIG_BOARD_HAS_LSE    1
+#endif
+
+/* This board provides an HSE */
+#ifndef CONFIG_BOARD_HAS_HSE
+#define CONFIG_BOARD_HAS_HSE    1
+#endif
 
 #include "periph_cpu.h"
 #include "f1f3/cfg_clock_default.h"
diff --git a/boards/olimexino-stm32/include/periph_conf.h b/boards/olimexino-stm32/include/periph_conf.h
index 1820912345..f5bedeb1be 100644
--- a/boards/olimexino-stm32/include/periph_conf.h
+++ b/boards/olimexino-stm32/include/periph_conf.h
@@ -20,7 +20,14 @@
 #define PERIPH_CONF_H
 
 /* This board provides an LSE */
-#define CLOCK_LSE            (1)
+#ifndef CONFIG_BOARD_HAS_LSE
+#define CONFIG_BOARD_HAS_LSE    1
+#endif
+
+/* This board provides an HSE */
+#ifndef CONFIG_BOARD_HAS_HSE
+#define CONFIG_BOARD_HAS_HSE    1
+#endif
 
 #include "periph_cpu.h"
 #include "f1f3/cfg_clock_default.h"
diff --git a/boards/opencm904/include/periph_conf.h b/boards/opencm904/include/periph_conf.h
index d18121c9e6..f92aa4d10d 100644
--- a/boards/opencm904/include/periph_conf.h
+++ b/boards/opencm904/include/periph_conf.h
@@ -19,6 +19,11 @@
 #ifndef PERIPH_CONF_H
 #define PERIPH_CONF_H
 
+/* This board provides an HSE */
+#ifndef CONFIG_BOARD_HAS_HSE
+#define CONFIG_BOARD_HAS_HSE    1
+#endif
+
 #include "periph_cpu.h"
 #include "f1f3/cfg_clock_default.h"