X-Git-Url: https://git.libre-soc.org/?a=blobdiff_plain;f=src%2Fsoc%2Fbus%2Fwb_async.py;h=9c7b4e2ced24ed9eaddad11b7fa123e8dc6c7cf2;hb=38b888ff9dc612dabd4df9382f9bdd4c4e1e65d2;hp=6775427fd300d4e2113122ba3c9e5354332458fc;hpb=1d27edf8d48492302a8119fde51cae35e5e64b48;p=soc.git

diff --git a/src/soc/bus/wb_async.py b/src/soc/bus/wb_async.py
index 6775427f..9c7b4e2c 100644
--- a/src/soc/bus/wb_async.py
+++ b/src/soc/bus/wb_async.py
@@ -102,7 +102,11 @@ class WBAsyncBridge(Elaboratable):
                             # Parameters
                             p_ADDR_WIDTH=self.address_width,
                             p_DATA_WIDTH=self.data_width,
-                            p_SELECT_WIDTH=self.granularity,
+                            # width of select is the data width
+                            # *divided* by the data granularity.
+                            # data_width=32-bit, data granularity=8-bit,
+                            # select_width ==> 32/8 ==> 4
+                            p_SELECT_WIDTH=self.data_width//self.granularity,
 
                             # Clocks/resets
                             i_wbm_clk=self.wb_mclk,