litedram_gen: Compute rate based on type of PHY (DDR3 rate is 1:2 with ECP5DDRPHY).
This commit is contained in:
parent
0bb3bff8af
commit
f0a2f40a86
|
@ -523,28 +523,30 @@ class LiteDRAMCore(SoCCore):
|
|||
else:
|
||||
self.add_constant("UART_POLLING")
|
||||
|
||||
# CRG --------------------------------------------------------------------------------------
|
||||
# CRG / Rate -------------------------------------------------------------------------------
|
||||
if isinstance(platform, SimPlatform):
|
||||
crg = CRG(platform.request("clk"))
|
||||
crg = CRG(platform.request("clk"))
|
||||
rate = {"SDR" : "1:1", "DDR2": "1:2", "DDR3": "1:4", "DDR4": "1:4"}[core_config["memtype"]]
|
||||
elif core_config["sdram_phy"] in [litedram_phys.GENSDRPHY]:
|
||||
crg = LiteDRAMGENSDRPHYCRG(platform, core_config)
|
||||
crg = LiteDRAMGENSDRPHYCRG(platform, core_config)
|
||||
rate = {"SDR" : "1:1"}[core_config["memtype"]]
|
||||
elif core_config["sdram_phy"] in [litedram_phys.ECP5DDRPHY]:
|
||||
crg = LiteDRAMECP5DDRPHYCRG(platform, core_config)
|
||||
crg = LiteDRAMECP5DDRPHYCRG(platform, core_config)
|
||||
rate = {"DDR3": "1:2"}[core_config["memtype"]]
|
||||
elif core_config["sdram_phy"] in [litedram_phys.A7DDRPHY, litedram_phys.K7DDRPHY, litedram_phys.V7DDRPHY]:
|
||||
crg = LiteDRAMS7DDRPHYCRG(platform, core_config)
|
||||
crg = LiteDRAMS7DDRPHYCRG(platform, core_config)
|
||||
rate = {"DDR3": "1:4", "DDR4": "1:4"}[core_config["memtype"]]
|
||||
elif core_config["sdram_phy"] in [litedram_phys.USDDRPHY]:
|
||||
crg = LiteDRAMUSDDRPHYCRG(platform, core_config)
|
||||
crg = LiteDRAMUSDDRPHYCRG(platform, core_config)
|
||||
rate = {"DDR3": "1:4", "DDR4": "1:4"}[core_config["memtype"]]
|
||||
elif core_config["sdram_phy"] in [litedram_phys.USPDDRPHY]:
|
||||
crg = LiteDRAMUSPDDRPHYCRG(platform, core_config)
|
||||
crg = LiteDRAMUSPDDRPHYCRG(platform, core_config)
|
||||
rate = {"DDR3": "1:4", "DDR4": "1:4"}[core_config["memtype"]]
|
||||
self.submodules.crg = crg
|
||||
|
||||
# DRAM -------------------------------------------------------------------------------------
|
||||
platform.add_extension(get_dram_ios(core_config))
|
||||
sdram_module = core_config["sdram_module"](sys_clk_freq, rate={
|
||||
"SDR" : "1:1",
|
||||
"DDR2": "1:2",
|
||||
"DDR3": "1:4",
|
||||
"DDR4": "1:4"}[core_config["memtype"]])
|
||||
sdram_module = core_config["sdram_module"](sys_clk_freq, rate=rate)
|
||||
|
||||
# Collect Electrical Settings.
|
||||
electrical_settings_kwargs = {}
|
||||
|
|
Loading…
Reference in New Issue