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xilinx_zc706: Review/Minor changes.

This commit is contained in:
Florent Kermarrec 2024-03-26 21:35:10 +01:00
parent 99c05f7050
commit fdd4edbd1a
2 changed files with 20 additions and 16 deletions
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22
litex_boards/platforms/xilinx_zc706.py
View File

@ -12,7 +12,7 @@ from litex.build.openfpgaloader import OpenFPGALoader
_io = [ _io = [
# Clk / Rst. # Clk / Rst.
("sysclk", 0, ("clk200", 0,
Subsignal("p", Pins("H9"), IOStandard("LVDS")), Subsignal("p", Pins("H9"), IOStandard("LVDS")),
Subsignal("n", Pins("G9"), IOStandard("LVDS")), Subsignal("n", Pins("G9"), IOStandard("LVDS")),
), ),
@ -34,17 +34,17 @@ _io = [
("user_btn_r", 0, Pins("R27"), IOStandard("LVCMOS25")), ("user_btn_r", 0, Pins("R27"), IOStandard("LVCMOS25")),
# Switches. # Switches.
("user_dip_btn", 3, Pins("AJ13"), IOStandard("LVCMOS25")),
("user_dip_btn", 2, Pins("AC17"), IOStandard("LVCMOS25")),
("user_dip_btn", 1, Pins("AC16"), IOStandard("LVCMOS25")),
("user_dip_btn", 0, Pins("AB17"), IOStandard("LVCMOS25")), ("user_dip_btn", 0, Pins("AB17"), IOStandard("LVCMOS25")),
("user_dip_btn", 1, Pins("AC16"), IOStandard("LVCMOS25")),
("user_dip_btn", 2, Pins("AC17"), IOStandard("LVCMOS25")),
("user_dip_btn", 3, Pins("AJ13"), IOStandard("LVCMOS25")),
# SMA. # SMA.
("user_sma_clock", 0, ("user_sma_clock", 0,
Subsignal("p", Pins("AD18"), IOStandard("LVDS_25"), Subsignal("p", Pins("AD18")),
Misc("DIFF_TERM=TRUE")), Subsignal("n", Pins("AD19")),
Subsignal("n", Pins("AD19"), IOStandard("LVDS_25"), IOStandard("LVDS_25"),
Misc("DIFF_TERM=TRUE")), Misc("DIFF_TERM=TRUE")
), ),
("user_sma_clock_p", Pins("AD18"), IOStandard("LVCMOS25")), ("user_sma_clock_p", Pins("AD18"), IOStandard("LVCMOS25")),
("user_sma_clock_n", Pins("AD19"), IOStandard("LVCMOS25")), ("user_sma_clock_n", Pins("AD19"), IOStandard("LVCMOS25")),
@ -82,6 +82,7 @@ _io = [
), ),
# SFP. # SFP.
("sfp_tx_disable_n", 0, Pins("AA18"), IOStandard("LVCMOS25")),
("sfp", 0, ("sfp", 0,
Subsignal("txp", Pins("W4")), Subsignal("txp", Pins("W4")),
Subsignal("txn", Pins("W3")), Subsignal("txn", Pins("W3")),
@ -96,7 +97,6 @@ _io = [
Subsignal("p", Pins("Y6")), Subsignal("p", Pins("Y6")),
Subsignal("n", Pins("Y5")), Subsignal("n", Pins("Y5")),
), ),
("sfp_tx_disable_n", 0, Pins("AA18"), IOStandard("LVCMOS25")),
] ]
# Connectors --------------------------------------------------------------------------------------- # Connectors ---------------------------------------------------------------------------------------
@ -323,7 +323,7 @@ _connectors = [
# Platform ----------------------------------------------------------------------------------------- # Platform -----------------------------------------------------------------------------------------
class Platform(Xilinx7SeriesPlatform): class Platform(Xilinx7SeriesPlatform):
default_clk_name = "sysclk" default_clk_name = "clk200"
default_clk_period = 1e9/200e6 default_clk_period = 1e9/200e6
def __init__(self, toolchain="vivado"): def __init__(self, toolchain="vivado"):
@ -334,4 +334,4 @@ class Platform(Xilinx7SeriesPlatform):
def do_finalize(self, fragment): def do_finalize(self, fragment):
Xilinx7SeriesPlatform.do_finalize(self, fragment) Xilinx7SeriesPlatform.do_finalize(self, fragment)
self.add_period_constraint(self.lookup_request("sysclk", loose=True), 1e9/200e6) self.add_period_constraint(self.lookup_request("clk200", loose=True), 1e9/200e6)

14
litex_boards/targets/xilinx_zc706.py
View File

@ -34,14 +34,18 @@ from litex.soc.cores.led import LedChaser
class _CRG(LiteXModule): class _CRG(LiteXModule):
def __init__(self, platform, sys_clk_freq): def __init__(self, platform, sys_clk_freq):
self.rst = Signal() self.rst = Signal()
self.cd_sys = ClockDomain() self.cd_sys = ClockDomain()
# # # # # #
# Clk/Rst.
clk200 = platform.request("clk200")
# PLL.
self.pll = pll = S7PLL(speedgrade=-1) self.pll = pll = S7PLL(speedgrade=-1)
self.comb += pll.reset.eq(self.rst) self.comb += pll.reset.eq(self.rst)
pll.register_clkin(platform.request("sysclk"), 200e6) pll.register_clkin(clk200, 200e6)
pll.create_clkout(self.cd_sys, sys_clk_freq) pll.create_clkout(self.cd_sys, sys_clk_freq)
platform.add_false_path_constraints(self.cd_sys.clk, pll.clkin) # Ignore sys_clk to pll.clkin path created by SoC's rst. platform.add_false_path_constraints(self.cd_sys.clk, pll.clkin) # Ignore sys_clk to pll.clkin path created by SoC's rst.
@ -57,7 +61,7 @@ class BaseSoC(SoCCore):
self.crg = _CRG(platform, sys_clk_freq) self.crg = _CRG(platform, sys_clk_freq)
# SoCCore ---------------------------------------------------------------------------------- # SoCCore ----------------------------------------------------------------------------------
SoCCore.__init__(self, platform, sys_clk_freq, ident="LiteX SoC on ZCU102", **kwargs) SoCCore.__init__(self, platform, sys_clk_freq, ident="LiteX SoC on ZCU706", **kwargs)
# Leds ------------------------------------------------------------------------------------- # Leds -------------------------------------------------------------------------------------
if with_led_chaser: if with_led_chaser:
@ -70,7 +74,7 @@ class BaseSoC(SoCCore):
def main(): def main():
from litex.build.parser import LiteXArgumentParser from litex.build.parser import LiteXArgumentParser
parser = LiteXArgumentParser(platform=xilinx_zc706.Platform, description="LiteX SoC on ZC706.") parser = LiteXArgumentParser(platform=xilinx_zc706.Platform, description="LiteX SoC on ZC706.")
parser.add_target_argument("--sys-clk-freq", default=100e6, type=float, help="System clock generator.") parser.add_target_argument("--sys-clk-freq", default=100e6, type=float, help="System clock frequency.")
args = parser.parse_args() args = parser.parse_args()
soc = BaseSoC(sys_clk_freq=args.sys_clk_freq, **parser.soc_argdict) soc = BaseSoC(sys_clk_freq=args.sys_clk_freq, **parser.soc_argdict)