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antmicro_datacenter: use 100 MHz and add i2c master 

Signed-off-by: Alessandro Comodi <acomodi@antmicro.com>
This commit is contained in:
Alessandro Comodi 2022-02-23 15:24:29 +01:00
parent 0b80890119
commit db2d83ea29
2 changed files with 13 additions and 2 deletions
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7
litex_boards/platforms/antmicro_datacenter_ddr4_test_board.py
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@ -116,6 +116,13 @@ _io = [
Misc("SLEW=FAST"),
IOStandard("LVCMOS33"),
),
# I2C
("i2c", 0,
Subsignal("scl", Pins("Y6")),
Subsignal("sda", Pins("Y5")),
IOStandard("SSTL12_T_DCI"),
),
]
# Platform -----------------------------------------------------------------------------------------

8
litex_boards/targets/antmicro_datacenter_ddr4_test_board.py
View File

@ -20,6 +20,7 @@ from litex.soc.integration.soc_core import *
from litex.soc.integration.soc import SoCRegion
from litex.soc.integration.builder import *
from litex.soc.cores.led import LedChaser
from litex.soc.cores.bitbang import I2CMaster
from litedram.modules import MTA18ASF2G72PZ
from litedram.phy.s7ddrphy import A7DDRPHY
@ -75,7 +76,6 @@ class BaseSoC(SoCCore):
memtype = "DDR4",
iodelay_clk_freq = iodelay_clk_freq,
sys_clk_freq = sys_clk_freq,
cmd_latency = 1,
is_rdimm = True,
)
self.add_sdram("sdram",
@ -121,6 +121,10 @@ class BaseSoC(SoCCore):
pads = platform.request_all("user_led"),
sys_clk_freq = sys_clk_freq)
# System I2C (behing multiplexer) ----------------------------------------------------------
i2c_pads = platform.request('i2c')
self.submodules.i2c = I2CMaster(i2c_pads)
def generate_sdram_phy_py_header(self, output_file):
os.makedirs(os.path.dirname(output_file), exist_ok=True)
f = open(output_file, "w")
@ -150,7 +154,7 @@ def main():
target.add_argument("--build", action="store_true", help="Build bitstream.")
target.add_argument("--load", action="store_true", help="Load bitstream.")
target.add_argument("--flash", action="store_true", help="Flash bitstream.")
target.add_argument("--sys-clk-freq", default=50e6, help="System clock frequency.")
target.add_argument("--sys-clk-freq", default=100e6, help="System clock frequency.")
target.add_argument("--iodelay-clk-freq", default=200e6, help="IODELAYCTRL frequency.")
ethopts = target.add_mutually_exclusive_group()
ethopts.add_argument("--with-ethernet", action="store_true", help="Add Ethernet.")