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Merge pull request #92 from rob-ng15/master 

Enable use of HalfRateGENSDRPHY on de10nano
This commit is contained in:
enjoy-digital 2020-07-24 08:49:09 +02:00 committed by GitHub
parent 1e1589a514 7cda143250
commit 89c5bf43cf
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GPG Key ID: 4AEE18F83AFDEB23
2 changed files with 54 additions and 26 deletions
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46
litex_boards/platforms/de10nano.py
View File

@ -30,13 +30,15 @@ _io = [
("user_sw", 3, Pins("W20"), IOStandard("3.3-V LVTTL")),
("serial", 0,
Subsignal("tx", Pins("AH9"), IOStandard("3.3-V LVTTL")), # User I/O port on Mister
Subsignal("rx", Pins("AG11"), IOStandard("3.3-V LVTTL")) # User I/O port on Mister
Subsignal("tx", Pins("AH9")), # User I/O port on Mister
Subsignal("rx", Pins("AG11")),# User I/O port on Mister
IOStandard("3.3-V LVTTL"), Misc("WEAK_PULL_UP_RESISTOR ON"), Misc("CURRENT_STRENGTH_NEW \"MAXIMUM CURRENT\"")
),
("serial", 1,
Subsignal("tx", Pins("AF13"), IOStandard("3.3-V LVTTL")), # Arduino_IO1
Subsignal("rx", Pins("AG13"), IOStandard("3.3-V LVTTL")) # Arduino_IO0
Subsignal("tx", Pins("AF13")), # Arduino_IO1
Subsignal("rx", Pins("AG13")), # Arduino_IO0
IOStandard("3.3-V LVTTL"), Misc("WEAK_PULL_UP_RESISTOR ON"), Misc("CURRENT_STRENGTH_NEW \"MAXIMUM CURRENT\"")
),
("g_sensor", 0,
@ -55,13 +57,13 @@ _io = [
),
("hdmi", 0,
Subsignal("tx_d_r", Pins("AS12 AE12 W8 Y8 AD11 AD10 AE11 Y5")),
Subsignal("tx_d_g", Pins("AF10 Y4 AE9 AB4 AE7 AF6 AF8 AF5")),
Subsignal("tx_d_b", Pins("AE4 AH2 AH4 AH5 AH6 AG6 AF9 AE8")),
Subsignal("tx_clk", Pins("AG5")),
Subsignal("tx_de", Pins("AD19")),
Subsignal("tx_hs", Pins("T8")),
Subsignal("tx_vs", Pins("V13")),
Subsignal("tx_d_r", Pins("AS12 AE12 W8 Y8 AD11 AD10 AE11 Y5"), Misc("FAST_OUTPUT_REGISTER ON")),
Subsignal("tx_d_g", Pins("AF10 Y4 AE9 AB4 AE7 AF6 AF8 AF5"), Misc("FAST_OUTPUT_REGISTER ON")),
Subsignal("tx_d_b", Pins("AE4 AH2 AH4 AH5 AH6 AG6 AF9 AE8"), Misc("FAST_OUTPUT_REGISTER ON")),
Subsignal("tx_clk", Pins("AG5"), Misc("FAST_OUTPUT_REGISTER ON")),
Subsignal("tx_de", Pins("AD19"), Misc("FAST_OUTPUT_REGISTER ON")),
Subsignal("tx_hs", Pins("T8"), Misc("FAST_OUTPUT_REGISTER ON")),
Subsignal("tx_vs", Pins("V13"), Misc("FAST_OUTPUT_REGISTER ON")),
Subsignal("tx_int", Pins("AF11")),
IOStandard("3.3-V LVTTL")
),
@ -90,13 +92,14 @@ _mister_sdram_module_io = [
"AC22 C12 AB26 AD17 D12")),
Subsignal("dq", Pins(
"E8 V12 D11 W12 AH13 D8 AH14 AF7",
"AE24 AD23 AE6 AE23 AG14 AD5 AF4 AH3")),
"AE24 AD23 AE6 AE23 AG14 AD5 AF4 AH3"),
Misc("FAST_OUTPUT_ENABLE_REGISTER ON"), Misc("FAST_INPUT_REGISTER ON")),
Subsignal("ba", Pins("Y17 AB25")),
Subsignal("cas_n", Pins("AA18")),
Subsignal("cs_n", Pins("Y18")),
Subsignal("ras_n", Pins("W14")),
Subsignal("we_n", Pins("AA19")),
IOStandard("3.3-V LVTTL")
IOStandard("3.3-V LVTTL"), Misc("CURRENT_STRENGTH_NEW \"MAXIMUM CURRENT\""), Misc("FAST_OUTPUT_REGISTER ON"), Misc("ALLOW_SYNCH_CTRL_USAGE OFF")
),
("spisdcard", 0,
@ -104,14 +107,23 @@ _mister_sdram_module_io = [
Subsignal("mosi", Pins("AF27")),
Subsignal("cs_n", Pins("AF28")),
Subsignal("miso", Pins("AF25")),
IOStandard("3.3-V LVTTL")
IOStandard("3.3-V LVTTL"), Misc("CURRENT_STRENGTH_NEW \"MAXIMUM CURRENT\""), Misc("WEAK_PULL_UP_RESISTOR ON")
),
("sdcard", 0,
Subsignal("data", Pins("AF25 AF23 AD26 AF28"), Misc("WEAK_PULL_UP_RESISTOR ON")),
Subsignal("cmd", Pins("AF27"), Misc("WEAK_PULL_UP_RESISTOR ON")),
Subsignal("clk", Pins("AH26")),
Subsignal("cd", Pins("AH7"), Misc("WEAK_PULL_UP_RESISTOR ON")),
IOStandard("3.3-V LVTTL"), Misc("CURRENT_STRENGTH_NEW \"MAXIMUM CURRENT\""),
),
("mister_outputs", 0,
Subsignal("led_user", Pins("Y15")),
Subsignal("led_hdd", Pins("AA15")),
Subsignal("led_power", Pins("AG28")),
IOStandard("3.3-V LVTTL")
IOStandard("3.3-V LVTTL"), Misc("WEAK_PULL_UP_RESISTOR ON"), Misc("CURRENT_STRENGTH_NEW \"MAXIMUM CURRENT\"")
),
("vga", 0,
@ -120,8 +132,8 @@ _mister_sdram_module_io = [
Subsignal("blue", Pins("AG21 AA20 AE22 AF22 AH23 AH21")),
Subsignal("hsync", Pins("AH22")),
Subsignal("vsync", Pins("AG24")),
Subsignal("en", Pins("AH27")),
IOStandard("3.3-V LVTTL")
Subsignal("en", Pins("AH27"), Misc("WEAK_PULL_UP_RESISTOR ON")),
IOStandard("3.3-V LVTTL"), Misc("CURRENT_STRENGTH_NEW 8MA")
),
]

28
litex_boards/targets/de10nano.py
View File

@ -21,15 +21,19 @@ from litex.soc.integration.builder import *
from litex.soc.cores.led import LedChaser
from litedram.modules import AS4C32M16
from litedram.phy import GENSDRPHY
from litedram.phy import GENSDRPHY, HalfRateGENSDRPHY
from litevideo.terminal.core import Terminal
# CRG ----------------------------------------------------------------------------------------------
class _CRG(Module):
def __init__(self, platform, sys_clk_freq, with_sdram=False):
def __init__(self, platform, sys_clk_freq, with_sdram=False, sdram_sys2x=False):
self.clock_domains.cd_sys = ClockDomain()
if sdram_sys2x:
self.clock_domains.cd_sys2x = ClockDomain()
self.clock_domains.cd_sys2x_ps = ClockDomain(reset_less=True)
else:
self.clock_domains.cd_sys_ps = ClockDomain(reset_less=True)
self.clock_domains.cd_vga = ClockDomain(reset_less=True)
# # #
@ -41,17 +45,22 @@ class _CRG(Module):
self.submodules.pll = pll = CycloneVPLL(speedgrade="-I7")
pll.register_clkin(clk50, 50e6)
pll.create_clkout(self.cd_sys, sys_clk_freq)
if sdram_sys2x:
pll.create_clkout(self.cd_sys2x, 2*sys_clk_freq)
pll.create_clkout(self.cd_sys2x_ps, 2*sys_clk_freq, phase=90)
else:
pll.create_clkout(self.cd_sys_ps, sys_clk_freq, phase=90)
pll.create_clkout(self.cd_vga, 25e6)
# SDRAM clock
if with_sdram:
self.specials += DDROutput(1, 0, platform.request("sdram_clock"), ClockSignal("sys_ps"))
sdram_clk = ClockSignal("sys2x_ps" if sdram_sys2x else "sys_ps")
self.specials += DDROutput(1, 0, platform.request("sdram_clock"), sdram_clk)
# BaseSoC ------------------------------------------------------------------------------------------
class BaseSoC(SoCCore):
def __init__(self, sys_clk_freq=int(50e6), with_mister_sdram=False, with_mister_vga=False, **kwargs):
def __init__(self, sys_clk_freq=int(50e6), with_mister_sdram=True, with_mister_vga=False, sdram_sys2x=False, **kwargs):
platform = de10nano.Platform()
# SoCCore ----------------------------------------------------------------------------------
@ -61,14 +70,19 @@ class BaseSoC(SoCCore):
**kwargs)
# CRG --------------------------------------------------------------------------------------
self.submodules.crg = _CRG(platform, sys_clk_freq, with_sdram=with_mister_sdram)
self.submodules.crg = _CRG(platform, sys_clk_freq, with_sdram=with_mister_sdram, sdram_sys2x=sdram_sys2x)
# SDR SDRAM --------------------------------------------------------------------------------
if with_mister_sdram and not self.integrated_main_ram_size:
if sdram_sys2x:
self.submodules.sdrphy = HalfRateGENSDRPHY(platform.request("sdram"))
rate = "1:2"
else:
self.submodules.sdrphy = GENSDRPHY(platform.request("sdram"))
rate = "1:1"
self.add_sdram("sdram",
phy = self.sdrphy,
module = AS4C32M16(self.clk_freq, "1:1"),
module = AS4C32M16(sys_clk_freq, rate),
origin = self.mem_map["main_ram"],
size = kwargs.get("max_sdram_size", 0x40000000),
l2_cache_size = kwargs.get("l2_size", 8192),
@ -105,10 +119,12 @@ def main():
soc_sdram_args(parser)
parser.add_argument("--with-mister-sdram", action="store_true", help="Enable SDRAM with MiSTer expansion board")
parser.add_argument("--with-mister-vga", action="store_true", help="Enable VGA with Mister expansion board")
parser.add_argument("--sdram-sys2x", action="store_true", help="Use double frequency for SDRAM PHY")
args = parser.parse_args()
soc = BaseSoC(
with_mister_sdram = args.with_mister_sdram,
with_mister_vga = args.with_mister_vga,
sdram_sys2x = args.sdram_sys2x,
**soc_sdram_argdict(args))
builder = Builder(soc, **builder_argdict(args))
builder.build(run=args.build)