include: zephyr: dt-bindings: clock: Add HSI48 support STM32C071

STM32C071 have USB peripheral which can be clocked from HSI (HSIUSB48).

Signed-off-by: Tomáš Juřena <[email protected]>

Author: jurenat

include/zephyr/dt-bindings/clock/stm32c0_clock.h

@@ -23,9 +23,13 @@
 /** System clock */
 /* defined in stm32_common_clocks.h */
 /** Fixed clocks  */
-/* Low speed clocks defined in stm32_common_clocks.h */
+/* Low speed clocks defined in stm32_common_clocks.h
+ * STM32_SRC_HSI relates to HSI48 clock mentioned in RM0490 Reference Manual
+ * STM32_SRC_HSI48 relates to HSIUSB48 mentioned in RM0490 Reference Manual
+ */
 #define STM32_SRC_HSI		(STM32_SRC_LSI + 1)
-#define STM32_SRC_HSE		(STM32_SRC_HSI + 1)
+#define STM32_SRC_HSI48		(STM32_SRC_HSI + 1)
+#define STM32_SRC_HSE		(STM32_SRC_HSI48 + 1)
 /** Peripheral bus clock */
 #define STM32_SRC_PCLK		(STM32_SRC_HSE + 1)