linuswck
/
artiq-zynq
forked from M-Labs/artiq-zynq
1
0
Fork 0
Code Pull Requests Activity

kasli-soc: Add BUFG to the IBUFGDS for MMCM CLKIN1 

- Fix Vivado Compilation Error [DRC REQP-119]
- MMCME2_ADV CLKIN1 and CLKIN2 are now driven from the same source type (BUFG)
This commit is contained in:
linuswck 2023-10-11 10:07:06 +08:00
parent a4d1be00c0
commit 174e645736
1 changed files with 8 additions and 3 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

11
src/gateware/kasli_soc.py
View File

@ -127,15 +127,20 @@ class GenericStandalone(SoCCore):
clk_synth = platform.request("cdr_clk_clean_fabric")
clk_synth_se = Signal()
clk_synth_se_buf = Signal()
platform.add_period_constraint(clk_synth.p, 8.0)
self.specials += Instance("IBUFGDS",
self.specials += [
Instance("IBUFGDS",
p_DIFF_TERM="TRUE", p_IBUF_LOW_PWR="FALSE",
i_I=clk_synth.p, i_IB=clk_synth.n, o_O=clk_synth_se)
i_I=clk_synth.p, i_IB=clk_synth.n, o_O=clk_synth_se
),
Instance("BUFG", i_I=clk_synth_se, o_O=clk_synth_se_buf),
]
fix_serdes_timing_path(platform)
self.submodules.bootstrap = GTPBootstrapClock(self.platform, description["rtio_frequency"])
self.submodules.sys_crg = zynq_clocking.SYSCRG(self.platform, self.ps7, clk_synth_se)
self.submodules.sys_crg = zynq_clocking.SYSCRG(self.platform, self.ps7, clk_synth_se_buf)
platform.add_false_path_constraints(
self.bootstrap.cd_bootstrap.clk, self.sys_crg.cd_sys.clk)
self.csr_devices.append("sys_crg")