diff --git a/Marlin/src/HAL/STM32F1/SPI.cpp b/Marlin/src/HAL/STM32F1/SPI.cpp
index 423772dbc9..0452cf6293 100644
--- a/Marlin/src/HAL/STM32F1/SPI.cpp
+++ b/Marlin/src/HAL/STM32F1/SPI.cpp
@@ -40,6 +40,9 @@
 #include <boards.h>
 #include <wirish.h>
 
+#include "../../inc/MarlinConfig.h"
+#include "spi_pins.h"
+
 /** Time in ms for DMA receive timeout */
 #define DMA_TIMEOUT 100
 
@@ -710,6 +713,6 @@ static spi_baud_rate determine_baud_rate(spi_dev *dev, uint32_t freq) {
   return baud_rates[i];
 }
 
-SPIClass SPI(1);
+SPIClass SPI(SPI_DEVICE);
 
 #endif // __STM32F1__
diff --git a/Marlin/src/lcd/dogm/u8g_dev_uc1701_mini12864_HAL.cpp b/Marlin/src/lcd/dogm/u8g_dev_uc1701_mini12864_HAL.cpp
index 85339e8349..e4e387c190 100644
--- a/Marlin/src/lcd/dogm/u8g_dev_uc1701_mini12864_HAL.cpp
+++ b/Marlin/src/lcd/dogm/u8g_dev_uc1701_mini12864_HAL.cpp
@@ -112,6 +112,7 @@ static const uint8_t u8g_dev_uc1701_mini12864_HAL_init_seq[] PROGMEM = {
   U8G_ESC_CS(1),              // enable chip
   UC1701_ALL_PIX(0),          // normal display
   U8G_ESC_CS(0),              // disable chip
+  U8G_ESC_DLY(150),           // delay 150 ms before sending any data
   U8G_ESC_END                 // end of sequence
 };
 
diff --git a/Marlin/src/lcd/dogm/ultralcd_DOGM.cpp b/Marlin/src/lcd/dogm/ultralcd_DOGM.cpp
index 7ebabd6950..bf0edbb8de 100644
--- a/Marlin/src/lcd/dogm/ultralcd_DOGM.cpp
+++ b/Marlin/src/lcd/dogm/ultralcd_DOGM.cpp
@@ -240,39 +240,35 @@ bool MarlinUI::detected() { return true; }
 
 // Initialize or re-initialize the LCD
 void MarlinUI::init_lcd() {
-  #if DISABLED(MKS_LCD12864)
+  #if PIN_EXISTS(LCD_BACKLIGHT)
+    OUT_WRITE(LCD_BACKLIGHT_PIN, DISABLED(DELAYED_BACKLIGHT_INIT)); // Illuminate after reset or right away
+  #endif
 
-    #if PIN_EXISTS(LCD_BACKLIGHT)
-      OUT_WRITE(LCD_BACKLIGHT_PIN, DISABLED(DELAYED_BACKLIGHT_INIT)); // Illuminate after reset or right away
+  #if ANY(MKS_12864OLED, MKS_12864OLED_SSD1306, FYSETC_242_OLED_12864, ZONESTAR_12864OLED)
+    SET_OUTPUT(LCD_PINS_DC);
+    #ifndef LCD_RESET_PIN
+      #define LCD_RESET_PIN LCD_PINS_RS
     #endif
+  #endif
 
-    #if ANY(MKS_12864OLED, MKS_12864OLED_SSD1306, FYSETC_242_OLED_12864, ZONESTAR_12864OLED)
-      SET_OUTPUT(LCD_PINS_DC);
-      #ifndef LCD_RESET_PIN
-        #define LCD_RESET_PIN LCD_PINS_RS
-      #endif
-    #endif
+  #if PIN_EXISTS(LCD_RESET)
+    // Perform a clean hardware reset with needed delays
+    OUT_WRITE(LCD_RESET_PIN, LOW);
+    _delay_ms(5);
+    WRITE(LCD_RESET_PIN, HIGH);
+    _delay_ms(5);
+    u8g.begin();
+  #endif
 
-    #if PIN_EXISTS(LCD_RESET)
-      // Perform a clean hardware reset with needed delays
-      OUT_WRITE(LCD_RESET_PIN, LOW);
-      _delay_ms(5);
-      WRITE(LCD_RESET_PIN, HIGH);
-      _delay_ms(5);
-      u8g.begin();
-    #endif
+  #if PIN_EXISTS(LCD_BACKLIGHT) && ENABLED(DELAYED_BACKLIGHT_INIT)
+    WRITE(LCD_BACKLIGHT_PIN, HIGH);
+  #endif
 
-    #if PIN_EXISTS(LCD_BACKLIGHT) && ENABLED(DELAYED_BACKLIGHT_INIT)
-      WRITE(LCD_BACKLIGHT_PIN, HIGH);
-    #endif
+  TERN_(HAS_LCD_CONTRAST, refresh_contrast());
 
-    TERN_(HAS_LCD_CONTRAST, refresh_contrast());
-
-    TERN_(LCD_SCREEN_ROT_90, u8g.setRot90());
-    TERN_(LCD_SCREEN_ROT_180, u8g.setRot180());
-    TERN_(LCD_SCREEN_ROT_270, u8g.setRot270());
-
-  #endif // !MKS_LCD12864
+  TERN_(LCD_SCREEN_ROT_90, u8g.setRot90());
+  TERN_(LCD_SCREEN_ROT_180, u8g.setRot180());
+  TERN_(LCD_SCREEN_ROT_270, u8g.setRot270());
 
   uxg_SetUtf8Fonts(g_fontinfo, COUNT(g_fontinfo));
 }
diff --git a/Marlin/src/pins/stm32f1/pins_MKS_ROBIN_E3_common.h b/Marlin/src/pins/stm32f1/pins_MKS_ROBIN_E3_common.h
index 1346e8099a..9461a828af 100644
--- a/Marlin/src/pins/stm32f1/pins_MKS_ROBIN_E3_common.h
+++ b/Marlin/src/pins/stm32f1/pins_MKS_ROBIN_E3_common.h
@@ -33,7 +33,6 @@
 
 //#define DISABLE_DEBUG
 #define DISABLE_JTAG
-#define ENABLE_SPI2
 
 //
 // EEPROM
@@ -152,8 +151,6 @@
     #define DOGLCD_SCK                      PB13
     #define DOGLCD_MOSI                     PB15
 
-    #undef SHOW_BOOTSCREEN
-
   #else
 
     #define LCD_PINS_D4                     PA6
diff --git a/Marlin/src/pins/stm32f1/pins_MKS_ROBIN_LITE3.h b/Marlin/src/pins/stm32f1/pins_MKS_ROBIN_LITE3.h
index 9cf8685dfa..6ce6c60105 100644
--- a/Marlin/src/pins/stm32f1/pins_MKS_ROBIN_LITE3.h
+++ b/Marlin/src/pins/stm32f1/pins_MKS_ROBIN_LITE3.h
@@ -115,8 +115,6 @@
     #define DOGLCD_SCK                      PB13
     #define DOGLCD_MOSI                     PB15
 
-    #undef SHOW_BOOTSCREEN
-
   #else                                           // !MKS_MINI_12864
 
     #define LCD_PINS_D4                     PA6
diff --git a/Marlin/src/pins/stm32f1/pins_MKS_ROBIN_NANO_V2.h b/Marlin/src/pins/stm32f1/pins_MKS_ROBIN_NANO_V2.h
index 228049d139..1295c7c46b 100644
--- a/Marlin/src/pins/stm32f1/pins_MKS_ROBIN_NANO_V2.h
+++ b/Marlin/src/pins/stm32f1/pins_MKS_ROBIN_NANO_V2.h
@@ -351,10 +351,6 @@
     #define DOGLCD_SCK                      PA5
     #define DOGLCD_MOSI                     PA7
 
-    // Required for MKS_MINI_12864 with this board
-    #define MKS_LCD12864B
-    #undef SHOW_BOOTSCREEN
-
   #else                                           // !MKS_MINI_12864
 
     #define LCD_PINS_D4                     PE14