From: Florent Kermarrec <florent@enjoy-digital.fr>
Date: Fri, 3 May 2019 07:30:59 +0000 (+0200)
Subject: soc/interconnect/axi: add comment on axi signas that are present but not used
X-Git-Tag: 24jan2021_ls180~1245
X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=9fab4752c4eb7978ae0c1f770cc19fdd88545048;p=litex.git

soc/interconnect/axi: add comment on axi signas that are present but not used
---

diff --git a/litex/soc/interconnect/axi.py b/litex/soc/interconnect/axi.py
index a528eb65..eb82820c 100644
--- a/litex/soc/interconnect/axi.py
+++ b/litex/soc/interconnect/axi.py
@@ -22,12 +22,13 @@ def ax_description(address_width, id_width):
         ("burst", 2), # Burst type
         ("len",   8), # Number of data (-1) transfers (up to 256)
         ("size",  4), # Number of bytes (-1) of each data transfer (up to 1024 bits)
-        ("lock",  2),
-        ("prot",  3),
-        ("cache", 4),
-        ("qos",   4),
+        ("lock",  2), # *
+        ("prot",  3), # *
+        ("cache", 4), # *
+        ("qos",   4), # *
         ("id",    id_width)
     ]
+    # * present for interconnect with others cores but not used by LiteX.
 
 def w_description(data_width, id_width):
     return [