From f3d01ce98cd71cad90d9e567134f65a4c6a03ebc Mon Sep 17 00:00:00 2001
From: Florent Kermarrec <florent@enjoy-digital.fr>
Date: Wed, 6 Oct 2021 14:30:50 +0200
Subject: [PATCH] litedram_gen: Expose ControllerSettings to user (and make
 cmd_buffer_length optional).

---
 litedram/gen.py | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/litedram/gen.py b/litedram/gen.py
index d1f131c..65bcfe5 100755
--- a/litedram/gen.py
+++ b/litedram/gen.py
@@ -33,6 +33,7 @@ import math
 import struct
 import yaml
 import argparse
+import inspect
 
 from migen import *
 from migen.genlib.resetsync import AsyncResetSynchronizer
@@ -602,7 +603,11 @@ class LiteDRAMCore(SoCCore):
             raise NotImplementedError
 
         # Controller Settings.
-        controller_settings = controller_settings = ControllerSettings(cmd_buffer_depth=core_config["cmd_buffer_depth"])
+        controller_kwargs = {}
+        for name in inspect.getfullargspec(ControllerSettings. __init__).args:
+            if core_config.get(name, None) is not None:
+                controller_kwargs[name] = core_config[name]
+        controller_settings = controller_settings = ControllerSettings(**controller_kwargs)
 
         # Add LiteDRAM Core to SoC.
         self.add_sdram("sdram",