Open jersey99 opened 1 year ago
kevinsu20
commented
1 year ago Hello, I happen to have this board as well. Can you tell me the commands you used and some configuration parameters? (The more detailed the better) I may be able to answer your question
jersey99
commented
1 year ago Thanks @sususjysjy .. I have 4GB micron DDR installed. My sys_clk_freq (125MHz) I may need to try a different sys_clk_freq, or adjust the speedgrade timings accordingly, but I just use the spd.dump. How did you instantiate the core?
("ddram", 0,
Subsignal("a", Pins(
"BD40 BB35 BE40 BD34 BF40 BC39 BC34 BD39",
"BD35 BE35 BA33 BF39 BD36 AV34"), # AW33 AY33 AW36"),
IOStandard("SSTL12_DCI")),
Subsignal("ba", Pins("BA35 AY36"), IOStandard("SSTL12_DCI")),
Subsignal("bg", Pins("BE36 BF37"), IOStandard("SSTL12_DCI")),
Subsignal("we_n", Pins("AW33"), IOStandard("SSTL12_DCI")), # A14
Subsignal("cas_n", Pins("AY33"), IOStandard("SSTL12_DCI")), # A15
Subsignal("ras_n", Pins("AW36"), IOStandard("SSTL12_DCI")), # A16
Subsignal("act_n", Pins("BB38"), IOStandard("SSTL12_DCI")),
# Subsignal("alert_n", Pins("BE38"), IOStandard("SSTL12_DCI")),
Subsignal("cs_n", Pins("AY35 AV33"), IOStandard("SSTL12_DCI")), # AW34 AU34
#Subsignal("par", Pins("BF35"), IOStandard("SSTL12_DCI")),
Subsignal("reset_n", Pins("BC38"), IOStandard("LVCMOS12")),
Subsignal("cke", Pins("BE37 BF38"), IOStandard("SSTL12_DCI")),
Subsignal("clk_p", Pins("BB36 BB37"), IOStandard("DIFF_SSTL12_DCI")),
Subsignal("clk_n", Pins("BC36 BC37"), IOStandard("DIFF_SSTL12_DCI")),
# Subsignal("cke", Pins("BE37"), IOStandard("SSTL12_DCI")),
# Subsignal("clk_p", Pins("BB36"), IOStandard("DIFF_SSTL12")),
# Subsignal("clk_n", Pins("BC36"), IOStandard("DIFF_SSTL12")),
Subsignal("odt", Pins("AW35 AT34"), IOStandard("SSTL12_DCI")),
Subsignal("dm", Pins("AH34 AJ27 AA32 AE31 BC31 AW29 BF32 AP31"), # AT33
IOStandard("POD12_DCI")),
Subsignal("dq", Pins(
"AF33 AG34 AH33 AJ33 AF34 AF32 AG32 AG31",
"AK31 AG30 AJ29 AK28 AJ31 AJ30 AJ28 AG29",
"Y33 W33 W30 AA34 Y32 W34 Y30 AB34",
"AD34 AF30 AD33 AC32 AE30 AE33 AC34 AC33",
"AY32 BA30 BB29 BB30 AY30 AY31 BA29 BB31",
"AV31 AW31 AU30 AT29 AU32 AV32 AU31 AT30",
"BD33 BE31 BD29 BF30 BE32 BE33 BC29 BE30",
"AN29 AP29 AN31 AL30 AR30 AP30 AL29 AM31"),
#"AM34 AP34 AM32 AP33 AL34 AN34 AL32 AR33"),
IOStandard("POD12_DCI")),
Subsignal("dqs_p", Pins("AH31 AH28 W31 AC31 BA32 AU29 BD30 AM29"), # AN32
IOStandard("DIFF_POD12")),
Subsignal("dqs_n", Pins("AH32 AH29 Y31 AD31 BB32 AV29 BD31 AM30"), # AN33
IOStandard("DIFF_POD12")),
Misc("SLEW=FAST"),
),class MTA8ATF51264HZ(DDR4Module):
# geometry
ngroupbanks = 4
ngroups = 4
nbanks = ngroups * ngroupbanks
nrows = 32768
ncols = 1024
# timings
trefi = {"1x": 64e6/8192, "2x": (64e6/8192)/2, "4x": (64e6/8192)/4}
trfc = {"1x": (None, 350), "2x": (None, 260), "4x": (None, 160)}
technology_timings = _TechnologyTimings(tREFI=trefi, tWTR=(4, 7.5), tCCD=(4, None), tRRD=(4, 4.9), tZQCS=(128, 80))
speedgrade_timings = {
"2133": _SpeedgradeTimings(tRP=15, tRCD=15, tWR=15, tRFC=trfc, tFAW=(20, 25), tRAS=33),
}
speedgrade_timings["default"] = speedgrade_timings["2133"]
# sys_clk_freq = 125e6
if not self.integrated_main_ram_size:
self.ddrphy = usddrphy.USPDDRPHY(platform.request("ddram"),
memtype = "DDR4",
sys_clk_freq = sys_clk_freq,
iodelay_clk_freq = sys_clk_freq * 4)
if spd_dump is not None:
ram_spd = parse_spd_hexdump(spd_dump)
ram_module = SDRAMModule.from_spd_data(ram_spd, sys_clk_freq)
print(f"configuring DDR4 from file: {spd_dump}")
else:
ram_module = MTA8ATF51264HZ(sys_clk_freq, "1:4")
self.add_sdram("sdram",
phy = self.ddrphy,
module = ram_module,
size = 0x40000000,
l2_cache_size = kwargs.get("l2_size", 8192)
)I have solved this problem and you need to change the module to MT40A512M16.
--=============== SoC ==================--
CPU: VexRiscv SMP-LINUX @ 125MHz
BUS: WISHBONE 32-bit @ 4GiB
CSR: 32-bit data
ROM: 64.0KiB
SRAM: 6.0KiB
L2: 2.0KiB
SDRAM: 4.0GiB 64-bit @ 1000MT/s (CL-9 CWL-9)
MAIN-RAM: 1.0GiB
--========== Initialization ============--
Initializing SDRAM @0x40000000...
Switching SDRAM to software control.
Write leveling:
tCK equivalent taps: 420
Cmd/Clk scan (0-210)
|0111 |011111111 |100111011 |001111111| best: 74
Setting Cmd/Clk delay to 74 taps.
Data scan:
m0: |11110000000000000111111111| delay: 271
m1: |11111000000000000011111111| delay: 287
m2: |11111100000000000001111111| delay: 300
m3: |11111110000000000000111111| delay: 00
m4: |11111111100000000000001111| delay: 00
m5: |11111111110000000000000111| delay: 00
m6: |11111111111100000000000001| delay: 00
m7: |11111111111100000000000001| delay: 00
Write latency calibration:
m0:0 m1:0 m2:0 m3:6 m4:6 m5:6 m6:6 m7:6
Read leveling:
m0, b00: |00000000000000000000000000000000| delays: -
m0, b01: |00000000000000000000000000000000| delays: -
m0, b02: |00000000000000000000000000000000| delays: -
m0, b03: |11111110000000000000000000000000| delays: 48+-48
m0, b04: |00000000011111111111000000000000| delays: 223+-80
m0, b05: |00000000000000000000000111111111| delays: 435+-73
m0, b06: |00000000000000000000000000000000| delays: -
m0, b07: |00000000000000000000000000000000| delays: -
best: m0, b04 delays: 222+-79
m1, b00: |00000000000000000000000000000000| delays: -
m1, b01: |00000000000000000000000000000000| delays: -
m1, b02: |00000000000000000000000000000000| delays: -
m1, b03: |11111110000000000000000000000000| delays: 51+-51
m1, b04: |00000000001111111111000000000000| delays: 233+-82
m1, b05: |00000000000000000000000111111111| delays: 437+-73
m1, b06: |00000000000000000000000000000000| delays: -
m1, b07: |00000000000000000000000000000000| delays: -
best: m1, b04 delays: 233+-82
m2, b00: |00000000000000000000000000000000| delays: -
m2, b01: |00000000000000000000000000000000| delays: -
m2, b02: |00000000000000000000000000000000| delays: -
m2, b03: |11110000000000000000000000000000| delays: 25+-25
m2, b04: |00000001111111111000000000000000| delays: 184+-83
m2, b05: |00000000000000000000111111111100| delays: 389+-81
m2, b06: |00000000000000000000000000000000| delays: -
m2, b07: |00000000000000000000000000000000| delays: -
best: m2, b04 delays: 185+-84
m3, b00: |00000000000000000000000000000000| delays: -
m3, b01: |00000000000000000000000000000000| delays: -
m3, b02: |00000000000000000000000000000000| delays: -
m3, b03: |11111100000000000000000000000000| delays: 40+-40
m3, b04: |00000000111111111110000000000000| delays: 210+-83
m3, b05: |00000000000000000000011111111111| delays: 418+-84
m3, b06: |00000000000000000000000000000000| delays: -
m3, b07: |00000000000000000000000000000000| delays: -
best: m3, b04 delays: 211+-83
m4, b00: |00000000000000000000000000000000| delays: -
m4, b01: |00000000000000000000000000000000| delays: -
m4, b02: |00000000000000000000000000000000| delays: -
m4, b03: |11000000000000000000000000000000| delays: 11+-11
m4, b04: |00000111111111100000000000000000| delays: 153+-86
m4, b05: |00000000000000000011111111110000| delays: 360+-82
m4, b06: |00000000000000000000000000000001| delays: 501+-09
m4, b07: |00000000000000000000000000000000| delays: -
best: m4, b04 delays: 152+-84
m5, b00: |00000000000000000000000000000000| delays: -
m5, b01: |00000000000000000000000000000000| delays: -
m5, b02: |00000000000000000000000000000000| delays: -
m5, b03: |10000000000000000000000000000000| delays: 08+-08
m5, b04: |00000111111111100000000000000000| delays: 152+-80
m5, b05: |00000000000000000111111111110000| delays: 355+-81
m5, b06: |00000000000000000000000000000001| delays: 503+-08
m5, b07: |00000000000000000000000000000000| delays: -
best: m5, b05 delays: 354+-83
m6, b00: |00000000000000000000000000000000| delays: -
m6, b01: |00000000000000000000000000000000| delays: -
m6, b02: |00000000000000000000000000000000| delays: -
m6, b03: |00000000000000000000000000000000| delays: -
m6, b04: |00011111111111000000000000000000| delays: 132+-85
m6, b05: |00000000000000000111111111100000| delays: 339+-82
m6, b06: |00000000000000000000000000000011| delays: 491+-20
m6, b07: |00000000000000000000000000000000| delays: -
best: m6, b04 delays: 132+-86
m7, b00: |00000000000000000000000000000000| delays: -
m7, b01: |00000000000000000000000000000000| delays: -
m7, b02: |00000000000000000000000000000000| delays: -
m7, b03: |00000000000000000000000000000000| delays: -
m7, b04: |00111111111110000000000000000000| delays: 118+-89
m7, b05: |00000000000000001111111111000000| delays: 334+-81
m7, b06: |00000000000000000000000000000111| delays: 486+-25
m7, b07: |00000000000000000000000000000000| delays: -
best: m7, b04 delays: 118+-88
Switching SDRAM to hardware control.
Memtest at 0x40000000 (2.0MiB)...
Write: 0x40000000-0x40200000 2.0MiB
Read: 0x40000000-0x40200000 2.0MiB
Memtest OK
Memspeed at 0x40000000 (Sequential, 2.0MiB)...
Write speed: 93.7MiB/s
Read speed: 78.1MiB/sHi @sususjysjy, Thanks a lot for your help, for some reason, I still get the same error with the MT40A512M16 instantiated. Basically half the memory fails, at this point. I am thinking it has something to do with A17 / BA/ BG configuration. When I look at the datasheet for MT40A512M16, A17 seems to be used for some settings (and it clearly isn't connected on our board). Do you mind sharing your pin settings when you get a chance? Thanks in advance!
jersey99
commented
1 year ago @sususjysjy I managed to get it to work with MT40A512M16, messing around with CS_N settings. I still don't quite understand why this works, MT40A512M16 is an 8GB part, and the Memory I have on board is 4GB. Some settings magic I need to figure out. Another thing that stumps me is how this doesn't work with SPD dump. I would love to discuss this further with any one who has something to say here. Meanwhile I will keep poking.
Hi All,
I am trying to bring up DDR4 on htg-940 board using litedram (I managed to get the spd dump over I2C). I feel like I have made some progress but seemed to have hit a dead-end for now. The memtest fails on about half the data (50 or 75% data errors). I would appreciate if some more experienced DDR4 personnel had a look at the memtest log or pin settings to see if they can give some feedback here.