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phy: add nranks to all phys

This commit is contained in:
Florent Kermarrec 2018-09-17 09:07:09 +02:00
parent 461b076624
commit d23dbf6e57
3 changed files with 13 additions and 4 deletions
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4
litedram/phy/gensdrphy.py
View File

@ -33,11 +33,13 @@ class GENSDRPHY(Module):
def __init__(self, pads): def __init__(self, pads):
addressbits = len(pads.a) addressbits = len(pads.a)
bankbits = len(pads.ba) bankbits = len(pads.ba)
nranks = 1 if not hasattr(pads, "cs_n") else len(pads.cs_n)
databits = len(pads.dq) databits = len(pads.dq)
self.settings = PhySettings( self.settings = PhySettings(
memtype="SDR", memtype="SDR",
dfi_databits=databits, dfi_databits=databits,
nranks=nranks,
nphases=1, nphases=1,
rdphase=0, rdphase=0,
wrphase=0, wrphase=0,
@ -48,7 +50,7 @@ class GENSDRPHY(Module):
write_latency=0 write_latency=0
) )
self.dfi = Interface(addressbits, bankbits, databits) self.dfi = Interface(addressbits, bankbits, nranks, databits)
# # # # # #

4
litedram/phy/kusddrphy.py
View File

@ -14,6 +14,7 @@ class KUSDDRPHY(Module, AutoCSR):
def __init__(self, pads): def __init__(self, pads):
addressbits = len(pads.a) addressbits = len(pads.a)
bankbits = len(pads.ba) bankbits = len(pads.ba)
nranks = 1 if not hasattr(pads, "cs_n") else len(pads.cs_n)
databits = len(pads.dq) databits = len(pads.dq)
nphases = 4 nphases = 4
@ -37,6 +38,7 @@ class KUSDDRPHY(Module, AutoCSR):
self.settings = PhySettings( self.settings = PhySettings(
memtype="DDR3", memtype="DDR3",
dfi_databits=2*databits, dfi_databits=2*databits,
nranks=nranks,
nphases=nphases, nphases=nphases,
rdphase=0, rdphase=0,
wrphase=2, wrphase=2,
@ -48,7 +50,7 @@ class KUSDDRPHY(Module, AutoCSR):
write_latency=2 write_latency=2
) )
self.dfi = Interface(addressbits, bankbits, 2*databits, nphases) self.dfi = Interface(addressbits, bankbits, nranks, 2*databits, nphases)
# # # # # #

9
litedram/phy/s6ddrphy.py
View File

@ -33,6 +33,7 @@ class S6HalfRateDDRPHY(Module):
raise NotImplementedError("S6HalfRateDDRPHY only supports DDR, LPDDR, DDR2 and DDR3") raise NotImplementedError("S6HalfRateDDRPHY only supports DDR, LPDDR, DDR2 and DDR3")
addressbits = len(pads.a) addressbits = len(pads.a)
bankbits = len(pads.ba) bankbits = len(pads.ba)
nranks = 1 if not hasattr(pads, "cs_n") else len(pads.cs_n)
databits = len(pads.dq) databits = len(pads.dq)
nphases = 2 nphases = 2
@ -40,6 +41,7 @@ class S6HalfRateDDRPHY(Module):
self.settings = PhySettings( self.settings = PhySettings(
memtype="DDR3", memtype="DDR3",
dfi_databits=2*databits, dfi_databits=2*databits,
nranks=nranks,
nphases=nphases, nphases=nphases,
rdphase=0, rdphase=0,
wrphase=1, wrphase=1,
@ -54,6 +56,7 @@ class S6HalfRateDDRPHY(Module):
self.settings = PhySettings( self.settings = PhySettings(
memtype=memtype, memtype=memtype,
dfi_databits=2*databits, dfi_databits=2*databits,
nranks=nranks,
nphases=nphases, nphases=nphases,
rdphase=0, rdphase=0,
wrphase=1, wrphase=1,
@ -64,7 +67,7 @@ class S6HalfRateDDRPHY(Module):
write_latency=0 write_latency=0
) )
self.dfi = Interface(addressbits, bankbits, 2*databits, nphases) self.dfi = Interface(addressbits, bankbits, nranks, 2*databits, nphases)
self.clk4x_wr_strb = Signal() self.clk4x_wr_strb = Signal()
self.clk4x_rd_strb = Signal() self.clk4x_rd_strb = Signal()
@ -407,12 +410,14 @@ class S6QuarterRateDDRPHY(Module):
addressbits = len(pads.a) addressbits = len(pads.a)
bankbits = len(pads.ba) bankbits = len(pads.ba)
nranks = 1 if not hasattr(pads, "cs_n") else len(pads.cs_n)
databits = len(pads.dq) databits = len(pads.dq)
nphases = 4 nphases = 4
self.settings = PhySettings( self.settings = PhySettings(
memtype="DDR3", memtype="DDR3",
dfi_databits=2*databits, dfi_databits=2*databits,
nranks=nranks,
nphases=nphases, nphases=nphases,
rdphase=0, rdphase=0,
wrphase=1, wrphase=1,
@ -424,7 +429,7 @@ class S6QuarterRateDDRPHY(Module):
write_latency=2//2 write_latency=2//2
) )
self.dfi = Interface(addressbits, bankbits, 2*databits, nphases) self.dfi = Interface(addressbits, bankbits, nranks, 2*databits, nphases)
self.clk8x_wr_strb = half_rate_phy.clk4x_wr_strb self.clk8x_wr_strb = half_rate_phy.clk4x_wr_strb
self.clk8x_rd_strb = half_rate_phy.clk4x_rd_strb self.clk8x_rd_strb = half_rate_phy.clk4x_rd_strb