include: zephyr: dt-bindings: clock: l4: add MCO SEL/PRE macros

Add macros in order to select the MCO input clock and prescaler
value.

Signed-off-by: Alain Volmat <[email protected]>

Author: Alain Volmat

include/zephyr/dt-bindings/clock/stm32l4_clock.h

@@ -89,4 +89,21 @@
 #define MCO1_SEL(val)           STM32_DT_CLOCK_SELECT((val), 0xF, 24, CFGR_REG)
 #define MCO1_PRE(val)           STM32_DT_CLOCK_SELECT((val), 0x7, 28, CFGR_REG)
 
+/* MCO prescaler : division factor */
+#define MCO_PRE_DIV_1	0
+#define MCO_PRE_DIV_2	1
+#define MCO_PRE_DIV_4	2
+#define MCO_PRE_DIV_8	3
+#define MCO_PRE_DIV_16	4
+
+/* MCO clock output */
+#define MCO_SEL_SYSCLK	1
+#define MCO_SEL_MSI	2
+#define MCO_SEL_HSI16	3
+#define MCO_SEL_HSE	4
+#define MCO_SEL_PLLCLK	5
+#define MCO_SEL_LSI	6
+#define MCO_SEL_LSE	7
+#define MCO_SEL_HSI48	8
+
 #endif /* ZEPHYR_INCLUDE_DT_BINDINGS_CLOCK_STM32L4_CLOCK_H_ */