From 82c21461c410388a24474a4abf7d310d3ab3efa1 Mon Sep 17 00:00:00 2001
From: InsanityAutomation <d.menzel@insanityautomation.com>
Date: Wed, 10 Apr 2024 19:38:31 -0400
Subject: [PATCH] Allows RAMPS to auto assign HW SPI Pins for TMC

---
 Marlin/src/pins/ramps/pins_RAMPS.h | 30 +++++++++++++++++++++---------
 1 file changed, 21 insertions(+), 9 deletions(-)

diff --git a/Marlin/src/pins/ramps/pins_RAMPS.h b/Marlin/src/pins/ramps/pins_RAMPS.h
index 0195f3a1bc..b0074dc785 100644
--- a/Marlin/src/pins/ramps/pins_RAMPS.h
+++ b/Marlin/src/pins/ramps/pins_RAMPS.h
@@ -320,17 +320,29 @@
 #endif
 
 //
-// TMC software SPI
+// TMC SPI
 //
 #if HAS_TMC_SPI
-  #ifndef TMC_SPI_MOSI
-    #define TMC_SPI_MOSI                 AUX2_09
-  #endif
-  #ifndef TMC_SPI_MISO
-    #define TMC_SPI_MISO                 AUX2_07
-  #endif
-  #ifndef TMC_SPI_SCK
-    #define TMC_SPI_SCK                  AUX2_05
+  #if ENABLED(TMC_USE_SW_SPI)
+    #ifndef TMC_SPI_MOSI
+      #define TMC_SPI_MOSI                 AUX2_09
+    #endif
+    #ifndef TMC_SPI_MISO
+      #define TMC_SPI_MISO                 AUX2_07
+    #endif
+    #ifndef TMC_SPI_SCK
+      #define TMC_SPI_SCK                  AUX2_05
+    #endif
+  #else
+    #ifndef TMC_SPI_MOSI
+      #define TMC_SPI_MOSI                 AUX3_03
+    #endif
+    #ifndef TMC_SPI_MISO
+      #define TMC_SPI_MISO                 AUX3_04
+    #endif
+    #ifndef TMC_SPI_SCK
+      #define TMC_SPI_SCK                  AUX3_05
+    #endif
   #endif
 #endif