⚡️ BTT SKR V3.0 / EZ = 480MHz (#24721)

buildroot/share/PlatformIO/boards/marlin_STM32H743Vx.json

     "core": "stm32",
     "cpu": "cortex-m7",
     "extra_flags": "-DSTM32H7xx -DSTM32H743xx",
-    "f_cpu": "400000000L",
+    "f_cpu": "480000000L",
     "mcu": "stm32h743vit6",
     "product_line": "STM32H743xx",
     "variant": "MARLIN_H743Vx"

ini/stm32h7.ini

 board              = marlin_BTT_SKR_SE_BX
 board_build.offset = 0x20000
 build_flags        = ${stm32_variant.build_flags} ${stm_flash_drive.build_flags}
-                    -DUSE_USBHOST_HS
-                    -DUSE_USB_HS_IN_FS
-                    -DHAL_DMA2D_MODULE_ENABLED
-                    -DHAL_LTDC_MODULE_ENABLED
-                    -DHAL_SDRAM_MODULE_ENABLED
-                    -DHAL_QSPI_MODULE_ENABLED
-                    -DHAL_MDMA_MODULE_ENABLED
-                    -DHAL_SD_MODULE_ENABLED
+                     -DUSE_USBHOST_HS
+                     -DUSE_USB_HS_IN_FS
+                     -DHAL_DMA2D_MODULE_ENABLED
+                     -DHAL_LTDC_MODULE_ENABLED
+                     -DHAL_SDRAM_MODULE_ENABLED
+                     -DHAL_QSPI_MODULE_ENABLED
+                     -DHAL_MDMA_MODULE_ENABLED
+                     -DHAL_SD_MODULE_ENABLED
 upload_protocol    = cmsis-dap
 debug_tool         = cmsis-dap
 
 board_build.offset          = 0x20000
 board_upload.offset_address = 0x08020000
 build_flags                 = ${stm32_variant.build_flags}
-                            -DPIN_SERIAL1_RX=PA_10 -DPIN_SERIAL1_TX=PA_9
-                            -DPIN_SERIAL3_RX=PD_9 -DPIN_SERIAL3_TX=PD_8
-                            -DPIN_SERIAL4_RX=PA_1 -DPIN_SERIAL4_TX=PA_0
-                            -DSERIAL_RX_BUFFER_SIZE=1024 -DSERIAL_TX_BUFFER_SIZE=1024
-                            -DTIMER_SERVO=TIM5 -DTIMER_TONE=TIM2
-                            -DSTEP_TIMER_IRQ_PRIO=0
-                            -DD_CACHE_DISABLED
+                              -DPIN_SERIAL1_RX=PA_10 -DPIN_SERIAL1_TX=PA_9
+                              -DPIN_SERIAL3_RX=PD_9 -DPIN_SERIAL3_TX=PD_8
+                              -DPIN_SERIAL4_RX=PA_1 -DPIN_SERIAL4_TX=PA_0
+                              -DSERIAL_RX_BUFFER_SIZE=1024 -DSERIAL_TX_BUFFER_SIZE=1024
+                              -DTIMER_SERVO=TIM5 -DTIMER_TONE=TIM2
+                              -DSTEP_TIMER_IRQ_PRIO=0
+                              -DD_CACHE_DISABLED
 upload_protocol             = cmsis-dap
 debug_tool                  = cmsis-dap