gen.py: Export direction signals for controlling an external buffer

Some platforms (e.g. Lambda Concepts ECPIX-5) connect to the SD card via a buffer / level shifter, which needs these signals to indicate which way it should drive. Signed-off-by: Paul Mackerras <[email protected]>
enjoy-digital · Apr 2, 2024 · 67382fd · 67382fd
1 parent 1e55953
commit 67382fd
Showing 1 changed file with 3 additions and 0 deletions.
diff --git a/litesdcard/gen.py b/litesdcard/gen.py
@@ -49,6 +49,9 @@
         Subsignal("cmd",  Pins(1)), # Note: Requires Pullup (internal or external).
         Subsignal("clk",  Pins(1)),
         Subsignal("cd",   Pins(1)),
+        Subsignal("cmd_dir",   Pins(1)),
+        Subsignal("dat0_dir",  Pins(1)),
+        Subsignal("dat13_dir", Pins(1)),
     ),
 ]