Split up SKR V2 Rev A / B (#21805)

Marlin/src/core/boards.h

 #define BOARD_BTT_SKR_PRO_V1_2        4208  // BigTreeTech SKR Pro v1.2 (STM32F407ZGT6)
 #define BOARD_BTT_BTT002_V1_0         4209  // BigTreeTech BTT002 v1.0 (STM32F407VGT6)
 #define BOARD_BTT_E3_RRF              4210  // BigTreeTech E3 RRF (STM32F407VGT6)
-#define BOARD_BTT_SKR_V2_0            4211  // BigTreeTech SKR v2.0 (STM32F407VGT6)
-#define BOARD_BTT_GTR_V1_0            4212  // BigTreeTech GTR v1.0 (STM32F407IGT)
-#define BOARD_LERDGE_K                4213  // Lerdge K (STM32F407ZG)
-#define BOARD_LERDGE_S                4214  // Lerdge S (STM32F407VE)
-#define BOARD_LERDGE_X                4215  // Lerdge X (STM32F407VE)
-#define BOARD_VAKE403D                4216  // VAkE 403D (STM32F446VET6)
-#define BOARD_FYSETC_S6               4217  // FYSETC S6 (STM32F446VET6)
-#define BOARD_FYSETC_S6_V2_0          4218  // FYSETC S6 v2.0 (STM32F446VET6)
-#define BOARD_FYSETC_SPIDER           4219  // FYSETC Spider (STM32F446VET6)
-#define BOARD_FLYF407ZG               4220  // FLYF407ZG (STM32F407ZG)
-#define BOARD_MKS_ROBIN2              4221  // MKS_ROBIN2 (STM32F407ZE)
-#define BOARD_MKS_ROBIN_PRO_V2        4222  // MKS Robin Pro V2 (STM32F407VE)
-#define BOARD_MKS_ROBIN_NANO_V3       4223  // MKS Robin Nano V3 (STM32F407VG)
-#define BOARD_ANET_ET4                4224  // ANET ET4 V1.x (STM32F407VGT6)
-#define BOARD_ANET_ET4P               4225 // ANET ET4P V1.x (STM32F407VGT6)
-#define BOARD_FYSETC_CHEETAH_V20      4226  // FYSETC Cheetah V2.0
+#define BOARD_BTT_SKR_V2_0_REV_A      4211  // BigTreeTech SKR v2.0 Rev A (STM32F407VGT6)
+#define BOARD_BTT_SKR_V2_0_REV_B      4212  // BigTreeTech SKR v2.0 Rev B (STM32F407VGT6)
+#define BOARD_BTT_GTR_V1_0            4213  // BigTreeTech GTR v1.0 (STM32F407IGT)
+#define BOARD_LERDGE_K                4214  // Lerdge K (STM32F407ZG)
+#define BOARD_LERDGE_S                4215  // Lerdge S (STM32F407VE)
+#define BOARD_LERDGE_X                4216  // Lerdge X (STM32F407VE)
+#define BOARD_VAKE403D                4217  // VAkE 403D (STM32F446VET6)
+#define BOARD_FYSETC_S6               4218  // FYSETC S6 (STM32F446VET6)
+#define BOARD_FYSETC_S6_V2_0          4219  // FYSETC S6 v2.0 (STM32F446VET6)
+#define BOARD_FYSETC_SPIDER           4220  // FYSETC Spider (STM32F446VET6)
+#define BOARD_FLYF407ZG               4221  // FLYF407ZG (STM32F407ZG)
+#define BOARD_MKS_ROBIN2              4222  // MKS_ROBIN2 (STM32F407ZE)
+#define BOARD_MKS_ROBIN_PRO_V2        4223  // MKS Robin Pro V2 (STM32F407VE)
+#define BOARD_MKS_ROBIN_NANO_V3       4224  // MKS Robin Nano V3 (STM32F407VG)
+#define BOARD_ANET_ET4                4225  // ANET ET4 V1.x (STM32F407VGT6)
+#define BOARD_ANET_ET4P               4226  // ANET ET4P V1.x (STM32F407VGT6)
+#define BOARD_FYSETC_CHEETAH_V20      4227  // FYSETC Cheetah V2.0
 
 //
 // ARM Cortex M7

Marlin/src/pins/pins.h

   #include "stm32f4/pins_BTT_BTT002_V1_0.h"     // STM32F4                                env:BIGTREE_BTT002
 #elif MB(BTT_E3_RRF)
   #include "stm32f4/pins_BTT_E3_RRF.h"          // STM32F4                                env:BIGTREE_E3_RRF
-#elif MB(BTT_SKR_V2_0)
-  #include "stm32f4/pins_BTT_SKR_V2_0.h"        // STM32F4                                env:BIGTREE_SKR_2
+#elif MB(BTT_SKR_V2_0_REV_A)
+  #include "stm32f4/pins_BTT_SKR_V2_0_REV_A.h"  // STM32F4                                env:BIGTREE_SKR_2
+#elif MB(BTT_SKR_V2_0_REV_B)
+  #include "stm32f4/pins_BTT_SKR_V2_0_REV_B.h"  // STM32F4                                env:BIGTREE_SKR_2
 #elif MB(LERDGE_K)
   #include "stm32f4/pins_LERDGE_K.h"            // STM32F4                                env:LERDGEK env:LERDGEK_usb_flash_drive
 #elif MB(LERDGE_S)
   #define BOARD_RUMBA32_AUS3D           -1019
   #define BOARD_RAMPS_DAGOMA            -1020
   #define BOARD_RAMPS_LONGER3D_LK4PRO   -1021
+  #define BOARD_BTT_SKR_V2_0            -1022
 
   #if MB(MKS_13)
     #error "BOARD_MKS_13 has been renamed BOARD_MKS_GEN_13. Please update your configuration."
     #error "BOARD_RAMPS_DAGOMA is now BOARD_DAGOMA_F5. Please update your configuration."
   #elif MB(RAMPS_LONGER3D_LK4PRO)
     #error "BOARD_RAMPS_LONGER3D_LK4PRO is now BOARD_LONGER3D_LKx_PRO. Please update your configuration."
+  #elif MB(BTT_SKR_V2_0)
+    #error "BTT_SKR_V2_0 is now BTT_SKR_V2_0_REV_A or BTT_SKR_V2_0_REV_B. Please update your configuration."
   #else
     #error "Unknown MOTHERBOARD value set in Configuration.h"
   #endif
   #undef BOARD_RUMBA32_AUS3D
   #undef BOARD_RAMPS_DAGOMA
   #undef BOARD_RAMPS_LONGER3D_LK4PRO
+  #undef BOARD_BTT_SKR_V2_0
 
 #endif
 

Marlin/src/pins/stm32f4/pins_BTT_SKR_V2_0_REV_A.h

+/**
+ * Marlin 3D Printer Firmware
+ * Copyright (c) 2021 MarlinFirmware [https://github.com/MarlinFirmware/Marlin]
+ *
+ * Based on Sprinter and grbl.
+ * Copyright (c) 2011 Camiel Gubbels / Erik van der Zalm
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ *
+ */
+#pragma once
+
+#define BOARD_INFO_NAME "BTT SKR V2 Rev.A"
+
+#error "SKR V2 Rev.A requires modification or drivers may be damaged. See https://bit.ly/3t5d9JQ for more information. Comment out this line to continue."
+#define DISABLE_DRIVER_SAFE_POWER_PROTECT
+
+#include "pins_BTT_SKR_V2_0_common.h"

Marlin/src/pins/stm32f4/pins_BTT_SKR_V2_0_REV_B.h

+/**
+ * Marlin 3D Printer Firmware
+ * Copyright (c) 2021 MarlinFirmware [https://github.com/MarlinFirmware/Marlin]
+ *
+ * Based on Sprinter and grbl.
+ * Copyright (c) 2011 Camiel Gubbels / Erik van der Zalm
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ *
+ */
+#pragma once
+
+#define BOARD_INFO_NAME "BTT SKR V2 Rev.B"
+
+#include "pins_BTT_SKR_V2_0_common.h"

Marlin/src/pins/stm32f4/pins_BTT_SKR_V2_0.h → Marlin/src/pins/stm32f4/pins_BTT_SKR_V2_0_common.h

 
 #include "env_validate.h"
 
-#define BOARD_INFO_NAME "BTT SKR V2.0"
-
 // Use one of these or SDCard-based Emulation will be used
 #if NO_EEPROM_SELECTED
   //#define SRAM_EEPROM_EMULATION                 // Use BackSRAM-based EEPROM emulation