platforms/blackpill-f4: Set different core clocks

* libopencm3 has presets for 84 & 96mhz, use them
  for f401 and f411 respectively. Same for DFU.

Author: ALTracer

src/platforms/blackpill-f401cc/platform.h

@@ -23,7 +23,8 @@
 #ifndef PLATFORMS_BLACKPILL_F401CC_PLATFORM_H
 #define PLATFORMS_BLACKPILL_F401CC_PLATFORM_H
 
-#define PLATFORM_IDENT "(BlackPill-F401CC) "
+#define PLATFORM_IDENT      "(BlackPill-F401CC) "
+#define PLATFORM_CLOCK_FREQ RCC_CLOCK_3V3_84MHZ
 
 #include "blackpill-f4.h"
 

src/platforms/blackpill-f401ce/platform.h

@@ -23,7 +23,8 @@
 #ifndef PLATFORMS_BLACKPILL_F401CE_PLATFORM_H
 #define PLATFORMS_BLACKPILL_F401CE_PLATFORM_H
 
-#define PLATFORM_IDENT "(BlackPill-F401CE) "
+#define PLATFORM_IDENT      "(BlackPill-F401CE) "
+#define PLATFORM_CLOCK_FREQ RCC_CLOCK_3V3_84MHZ
 
 #include "blackpill-f4.h"
 

src/platforms/blackpill-f411ce/platform.h

@@ -23,7 +23,8 @@
 #ifndef PLATFORMS_BLACKPILL_F411CE_PLATFORM_H
 #define PLATFORMS_BLACKPILL_F411CE_PLATFORM_H
 
-#define PLATFORM_IDENT "(BlackPill-F411CE) "
+#define PLATFORM_IDENT      "(BlackPill-F411CE) "
+#define PLATFORM_CLOCK_FREQ RCC_CLOCK_3V3_96MHZ
 
 #include "blackpill-f4.h"
 

src/platforms/common/blackpill-f4/blackpill-f4.c

@@ -68,7 +68,7 @@ void platform_init(void)
 		scb_reset_core();
 	}
 #endif
-	rcc_clock_setup_pll(&rcc_hse_25mhz_3v3[RCC_CLOCK_3V3_84MHZ]);
+	rcc_clock_setup_pll(&rcc_hse_25mhz_3v3[PLATFORM_CLOCK_FREQ]);
 
 	/* Enable peripherals */
 	rcc_periph_clock_enable(RCC_OTGFS);

src/platforms/common/blackpill-f4/usbdfu.c

@@ -50,7 +50,7 @@ int main(void)
 		dfu_jump_app_if_valid();
 	}
 
-	rcc_clock_setup_pll(&rcc_hse_25mhz_3v3[RCC_CLOCK_3V3_84MHZ]);
+	rcc_clock_setup_pll(&rcc_hse_25mhz_3v3[PLATFORM_CLOCK_FREQ]);
 
 	/* Assert blue LED as indicator we are in the bootloader */
 	rcc_periph_clock_enable(RCC_GPIOC);