Hardware
/
litedram
mirror of https://github.com/enjoy-digital/litedram.git
1
0
Fork 0
Code Issues Packages Projects Releases Wiki Activity

phy/gensdrphy: remove unused cmd_latency parameter.

This commit is contained in:
Florent Kermarrec 2021-01-04 10:53:47 +01:00
parent 87f95f8442
commit e9479cca83
1 changed files with 6 additions and 6 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

12
litedram/phy/gensdrphy.py
View File

@ -17,7 +17,7 @@ from litedram.phy.dfi import *
# Generic SDR PHY ----------------------------------------------------------------------------------
class GENSDRPHY(Module):
def __init__(self, pads, cl=2, cmd_latency=1):
def __init__(self, pads, cl=2):
pads = PHYPadsCombiner(pads)
addressbits = len(pads.a)
bankbits = len(pads.ba)
@ -37,7 +37,7 @@ class GENSDRPHY(Module):
rdphase = 0,
wrphase = 0,
cl = cl,
read_latency = cl + cmd_latency,
read_latency = cl + 1,
write_latency = 0
)
@ -78,14 +78,14 @@ class GENSDRPHY(Module):
self.specials += SDROutput(i=dfi.p0.wrdata_en & dfi.p0.wrdata_mask[i], o=pads.dm[i])
# DQ/DM Control Path -----------------------------------------------------------------------
rddata_en = Signal(cl + cmd_latency)
rddata_en = Signal(self.settings.read_latency)
self.sync += rddata_en.eq(Cat(dfi.p0.rddata_en, rddata_en))
self.sync += dfi.p0.rddata_valid.eq(rddata_en[-1])
# Half-rate Generic SDR PHY ------------------------------------------------------------------------
class HalfRateGENSDRPHY(Module):
def __init__(self, pads, cl=2, cmd_latency=1):
def __init__(self, pads, cl=2):
pads = PHYPadsCombiner(pads)
addressbits = len(pads.a)
bankbits = len(pads.ba)
@ -94,7 +94,7 @@ class HalfRateGENSDRPHY(Module):
nphases = 2
# FullRate PHY -----------------------------------------------------------------------------
full_rate_phy = GENSDRPHY(pads, cl, cmd_latency)
full_rate_phy = GENSDRPHY(pads, cl)
self.submodules += ClockDomainsRenamer("sys2x")(full_rate_phy)
# Clocking ---------------------------------------------------------------------------------
@ -120,7 +120,7 @@ class HalfRateGENSDRPHY(Module):
rdphase = 0,
wrphase = 0,
cl = cl,
read_latency = (cl + cmd_latency)//2 + 1,
read_latency = full_rate_phy.settings.read_latency//2 + 1,
write_latency = 0
)