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boards/targets: revert default sys_clk_freq on nexys4ddr/versa_ecp5 (but add parameter to configure it)

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This commit is contained in:
Florent Kermarrec 2019-05-24 09:37:33 +02:00
parent aa640f2999
commit cf369c437c
2 changed files with 8 additions and 4 deletions
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6
litex/boards/targets/nexys4ddr.py
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@ -47,7 +47,7 @@ class _CRG(Module):
# BaseSoC ------------------------------------------------------------------------------------------
class BaseSoC(SoCSDRAM):
def __init__(self, sys_clk_freq=int(50e6), **kwargs):
def __init__(self, sys_clk_freq=int(100e6), **kwargs):
platform = nexys4ddr.Platform()
SoCSDRAM.__init__(self, platform, clk_freq=sys_clk_freq,
integrated_rom_size=0x8000,
@ -102,12 +102,14 @@ def main():
parser = argparse.ArgumentParser(description="LiteX SoC on Nexys4DDR")
builder_args(parser)
soc_sdram_args(parser)
parser.add_argument("--sys-clk-freq", default=75e6,
help="system clock frequency (default=75MHz)")
parser.add_argument("--with-ethernet", action="store_true",
help="enable Ethernet support")
args = parser.parse_args()
cls = EthernetSoC if args.with_ethernet else BaseSoC
soc = cls(**soc_sdram_argdict(args))
soc = cls(sys_clk_freq=int(float(args.sys_clk_freq)), **soc_sdram_argdict(args))
builder = Builder(soc, **builder_argdict(args))
builder.build()

6
litex/boards/targets/versa_ecp5.py
View file

@ -73,7 +73,7 @@ class _CRG(Module):
# BaseSoC ------------------------------------------------------------------------------------------
class BaseSoC(SoCSDRAM):
def __init__(self, sys_clk_freq=int(50e6), toolchain="diamond", **kwargs):
def __init__(self, sys_clk_freq=int(75e6), toolchain="diamond", **kwargs):
platform = versa_ecp5.Platform(toolchain=toolchain)
SoCSDRAM.__init__(self, platform, clk_freq=sys_clk_freq,
integrated_rom_size=0x8000,
@ -130,12 +130,14 @@ def main():
help='gateware toolchain to use, diamond (default) or trellis')
builder_args(parser)
soc_sdram_args(parser)
parser.add_argument("--sys-clk-freq", default=75e6,
help="system clock frequency (default=75MHz)")
parser.add_argument("--with-ethernet", action="store_true",
help="enable Ethernet support")
args = parser.parse_args()
cls = EthernetSoC if args.with_ethernet else BaseSoC
soc = cls(toolchain=args.toolchain, **soc_sdram_argdict(args))
soc = cls(toolchain=args.toolchain, sys_clk_freq=int(float(args.sys_clk_freq)), **soc_sdram_argdict(args))
builder = Builder(soc, **builder_argdict(args))
builder.build()