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Merge pull request #124 from antmicro/jboc/mercury-xu5 

mercury_xu5: reduce cmd_latency to fix problems with DRAM leveling
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enjoy-digital 2020-11-20 19:37:41 +01:00 committed by GitHub
parent a2f3add24e ce38cff41d
commit ee50c3e8ae
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litex_boards/targets/mercury_xu5.py
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@ -73,7 +73,8 @@ class BaseSoC(SoCCore):
self.submodules.ddrphy = usddrphy.USPDDRPHY(platform.request("ddram"), self.submodules.ddrphy = usddrphy.USPDDRPHY(platform.request("ddram"),
memtype = "DDR4", memtype = "DDR4",
sys_clk_freq = sys_clk_freq, sys_clk_freq = sys_clk_freq,
iodelay_clk_freq = 500e6) iodelay_clk_freq = 500e6,
cmd_latency = 0)
self.add_csr("ddrphy") self.add_csr("ddrphy")
self.add_sdram("sdram", self.add_sdram("sdram",
phy = self.ddrphy, phy = self.ddrphy,