efinix: when a GPIO block is added, also add pin properties

litex/build/efinix/common.py

@@ -69,6 +69,7 @@ class EfinixTristateImpl(Module):
         for bit in range(nbits):
             io_name = platform.get_pin_name(io[bit])
             io_loc  = platform.get_pin_location(io[bit])
+            io_prop = platform.get_pin_properties(io[bit])
             io_o    = platform.add_iface_io(io_name + "_OUT")
             io_oe   = platform.add_iface_io(io_name +  "_OE")
             io_i    = platform.add_iface_io(io_name +  "_IN")
@@ -81,6 +82,7 @@ class EfinixTristateImpl(Module):
                 "mode"       : "INOUT",
                 "name"       : io_name,
                 "location"   : [io_loc[0]],
+                "properties" : io_prop
             }
 
             platform.toolchain.ifacewriter.blocks.append(block)

litex/build/efinix/ifacewriter.py

@@ -108,6 +108,7 @@ design.create("{2}", "{3}", "./../gateware", overwrite=True)
     def generate_gpio(self, block, verbose=True):
         name = block["name"]
         mode = block["mode"]
+        prop = block["properties"]
         cmd = ""
 
         if mode == "INOUT":
@@ -118,6 +119,9 @@ design.create("{2}", "{3}", "./../gateware", overwrite=True)
                 cmd += f'design.create_inout_gpio("{name}",{block["size"]-1},0)\n'
                 for i, pad in enumerate(block["location"]):
                     cmd += f'design.assign_pkg_pin("{name}[{i}]","{pad}")\n'
+            if prop:
+                for p, val in prop:
+                    cmd += 'design.set_property("{}","{}","{}")\n'.format(name, p, val)
             cmd += "\n"
             return cmd
 
@@ -132,6 +136,10 @@ design.create("{2}", "{3}", "./../gateware", overwrite=True)
             if "in_reg" in block:
                 cmd += f'design.set_property("{name}","IN_REG","{block["in_reg"]}")\n'
                 cmd += f'design.set_property("{name}","IN_CLK_PIN","{block["in_clk_pin"]}")\n'
+            if prop:
+                for p, val in prop:
+                    cmd += 'design.set_property("{}","{}","{}")\n'.format(name, p, val)
+            cmd += "\n"
             return cmd
 
         if mode == "OUTPUT":
@@ -150,6 +158,9 @@ design.create("{2}", "{3}", "./../gateware", overwrite=True)
             if "drive_strength" in block:
                 cmd += 'design.set_property("{}","DRIVE_STRENGTH","4")\n'.format(name, block["drive_strength"])
 
+            if prop:
+                for p, val in prop:
+                    cmd += 'design.set_property("{}","{}","{}")\n'.format(name, p, val)
             cmd += "\n"
             return cmd
 
@@ -157,12 +168,20 @@ design.create("{2}", "{3}", "./../gateware", overwrite=True)
             cmd += 'design.create_input_clock_gpio("{}")\n'.format(name)
             cmd += 'design.set_property("{}","IN_PIN","{}")\n'.format(name, name)
             cmd += 'design.assign_pkg_pin("{}","{}")\n\n'.format(name, block["location"])
+            if prop:
+                for p, val in prop:
+                    cmd += 'design.set_property("{}","{}","{}")\n'.format(name, p, val)
+            cmd += "\n"
             return cmd
 
         if mode == "OUTPUT_CLK":
             cmd += 'design.create_clockout_gpio("{}")\n'.format(name)
             cmd += 'design.set_property("{}","OUT_CLK_PIN","{}")\n'.format(name, name)
             cmd += 'design.assign_pkg_pin("{}","{}")\n\n'.format(name, block["location"])
+            if prop:
+                for p, val in prop:
+                    cmd += 'design.set_property("{}","{}","{}")\n'.format(name, p, val)
+            cmd += "\n"
             return cmd
 
         cmd = "# TODO: " + str(block) +"\n"

litex/build/efinix/platform.py

@@ -86,7 +86,36 @@ class EfinixPlatform(GenericPlatform):
                     return [pins[idx]]
         return None
 
-    def get_pin_name(self, sig):
+    def get_pin_properties(self, sig):
+        ret = []
+        if sig is None:
+            return None
+        assert len(sig) == 1
+
+        if isinstance(sig, _Slice):
+            sig = sig.value
+        sc = self.constraint_manager.get_sig_constraints()
+        for s, pins, others, resource in sc:
+            if (s == sig) and (pins[0] != 'X'):
+                    for o in others:
+                        if isinstance(o, IOStandard):
+                            ret.append(('IO_STANDARD', o.name))
+                        if isinstance(o, Misc):
+                            if o.misc in ["WEAK_PULLUP", "WEAK_PULLDOWN"]:
+                                prop = "PULL_OPTION"
+                                val = o.misc
+                            if "DRIVE_STRENGTH" in o.misc:
+                                prop = "DRIVE_STRENGTH"
+                                val = o.misc.split("=")[1]
+                                ret.append((prop, val))
+                            if "SLEWRATE" in o.misc:
+                                prop = "SLEW_RATE"
+                                val = "1"
+                                ret.append((prop, val))
+                    return ret
+        return None
+
+    def get_pin_name(self, sig, without_index=False):
         if sig is None:
             return None
         assert len(sig) == 1