mnt_rkx7: Add SDCard support.

litex_boards/platforms/mnt_rkx7.py

@@ -28,6 +28,16 @@ _io = [
         IOStandard("LVCMOS33")
     ),
 
+    # SDCard.
+    ("sdcard", 0,
+        Subsignal("data", Pins("A14 B10 A12 B15"), Misc("PULLUP True")),
+        Subsignal("cmd",  Pins("A15"), Misc("PULLUP True")),
+        Subsignal("clk",  Pins("C11")),
+        Subsignal("cd",   Pins("A10")),
+        Misc("SLEW=FAST"),
+        IOStandard("LVCMOS18"),
+    ),
+
     # DDR3 SDRAM.
     ("ddram", 0,
         Subsignal("a",       Pins(

litex_boards/targets/mnt_rkx7.py

@@ -83,6 +83,7 @@ def main():
     parser.add_argument("--load",           action="store_true", help="Load bitstream")
     parser.add_argument("--sys-clk-freq",   default=100e6,       help="System clock frequency (default: 100MHz)")
     parser.add_argument("--with-spi-flash", action="store_true", help="Enable SPI Flash (MMAPed)")
+    parser.add_argument("--with-sdcard",    action="store_true", help="Enable SDCard support")
     builder_args(parser)
     soc_core_args(parser)
     args = parser.parse_args()
@@ -92,6 +93,8 @@ def main():
         with_spi_flash = args.with_spi_flash,
         **soc_core_argdict(args)
     )
+    if args.with_sdcard:
+        soc.add_sdcard()
     builder = Builder(soc, **builder_argdict(args))
     builder.build(run=args.build)