arty: Add numato sd card pmod

It has a different layout.

Signed-off-by: Joel Stanley <joel@jms.id.au>

litex_boards/platforms/arty.py

@@ -296,6 +296,7 @@ def sdcard_pmod_io(pmod):
             IOStandard("LVCMOS33"),
         ),
         ("sdcard", 0,
+                              #       DAT0     DAT1      DAT2    DAT3
             Subsignal("data", Pins(f"{pmod}:2 {pmod}:4 {pmod}:5 {pmod}:0"), Misc("PULLUP True")),
             Subsignal("cmd",  Pins(f"{pmod}:1"), Misc("PULLUP True")),
             Subsignal("clk",  Pins(f"{pmod}:3")),
@@ -306,6 +307,23 @@ def sdcard_pmod_io(pmod):
 ]
 _sdcard_pmod_io = sdcard_pmod_io("pmodd") # SDCARD PMOD on JD.
 
+def numato_sdcard_pmod_io(pmod):
+    return [
+        # SDCard PMOD:
+        # https://numato.com/product/micro-sd-expansion-module/
+        ("sdcard", 0,
+                              #       DAT0     DAT1      DAT2    DAT3
+            Subsignal("data", Pins(f"{pmod}:6 {pmod}:2 {pmod}:4 {pmod}:0"), Misc("PULLUP True")),
+            Subsignal("cmd",  Pins(f"{pmod}:5"), Misc("PULLUP True")),
+            Subsignal("clk",  Pins(f"{pmod}:1")),
+#            Subsignal("cd",   Pins(f"{pmod}:3")), # not connected
+            Misc("SLEW=FAST"),
+            IOStandard("LVCMOS33"),
+        ),
+]
+_numato_sdcard_pmod_io = numato_sdcard_pmod_io("pmodd") # SDCARD PMOD on JD.
+
+
 # Platform -----------------------------------------------------------------------------------------
 
 class Platform(XilinxPlatform):

litex_boards/targets/arty.py

@@ -134,7 +134,7 @@ def main():
         ident_version  = args.no_ident_version,
         **soc_sdram_argdict(args)
     )
-    soc.platform.add_extension(arty._sdcard_pmod_io)
+    soc.platform.add_extension(arty._numato_sdcard_pmod_io)
     if args.with_spi_sdcard:
         soc.add_spi_sdcard()
     if args.with_sdcard: