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phy/ecp5ddrphy: add rst CSR.

This commit is contained in:
Florent Kermarrec 2020-10-12 19:25:34 +02:00
parent df73b982ee
commit 1ee4fa25c4
1 changed files with 12 additions and 10 deletions
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22
litedram/phy/ecp5ddrphy.py
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@ -108,6 +108,8 @@ class ECP5DDRPHY(Module, AutoCSR):
cwl_sys_latency = get_sys_latency(nphases, cwl)
# Registers --------------------------------------------------------------------------------
self._rst = CSRStorage()
self._dly_sel = CSRStorage(databits//8)
self._rdly_dq_rst = CSR()
@ -154,7 +156,7 @@ class ECP5DDRPHY(Module, AutoCSR):
for i in range(len(pads.clk_p)):
sd_clk_se = Signal()
self.specials += Instance("ODDRX2F",
i_RST = ResetSignal("sys"),
i_RST = ResetSignal("sys") | self._rst.storage,
i_SCLK = ClockSignal("sys"),
i_ECLK = ClockSignal("sys2x"),
**{f"i_D{n}": (0b1010 >> n) & 0b1 for n in range(4)},
@ -177,7 +179,7 @@ class ECP5DDRPHY(Module, AutoCSR):
pad = getattr(pads, pad_name)
for i in range(len(pad)):
self.specials += Instance("ODDRX2F",
i_RST = ResetSignal("sys"),
i_RST = ResetSignal("sys") | self._rst.storage,
i_SCLK = ClockSignal("sys"),
i_ECLK = ClockSignal("sys2x"),
**{f"i_D{n}": getattr(dfi.phases[n//2], dfi_name)[i] for n in range(4)},
@ -210,7 +212,7 @@ class ECP5DDRPHY(Module, AutoCSR):
p_DQS_LO_DEL_ADJ = "MINUS",
p_DQS_LO_DEL_VAL = 4,
# Clocks / Reset
i_RST = ResetSignal("sys"),
i_RST = ResetSignal("sys") | self._rst.storage,
i_SCLK = ClockSignal("sys"),
i_ECLK = ClockSignal("sys2x"),
i_DDRDEL = self.init.delay,
@ -252,7 +254,7 @@ class ECP5DDRPHY(Module, AutoCSR):
dqs_oe_n = Signal()
self.specials += [
Instance("ODDRX2DQSB",
i_RST = ResetSignal("sys"),
i_RST = ResetSignal("sys") | self._rst.storage,
i_SCLK = ClockSignal("sys"),
i_ECLK = ClockSignal("sys2x"),
i_DQSW = dqsw,
@ -260,7 +262,7 @@ class ECP5DDRPHY(Module, AutoCSR):
o_Q = dqs
),
Instance("TSHX2DQSA",
i_RST = ResetSignal("sys"),
i_RST = ResetSignal("sys") | self._rst.storage,
i_SCLK = ClockSignal("sys"),
i_ECLK = ClockSignal("sys2x"),
i_DQSW = dqsw,
@ -283,7 +285,7 @@ class ECP5DDRPHY(Module, AutoCSR):
dm_bl8_cases[1] = dm_o_data_muxed.eq(dm_o_data_d[4:])
self.sync += Case(bl8_chunk, dm_bl8_cases)
self.specials += Instance("ODDRX2DQA",
i_RST = ResetSignal("sys"),
i_RST = ResetSignal("sys") | self._rst.storage,
i_SCLK = ClockSignal("sys"),
i_ECLK = ClockSignal("sys2x"),
i_DQSW270 = dqsw270,
@ -310,7 +312,7 @@ class ECP5DDRPHY(Module, AutoCSR):
self.sync += Case(bl8_chunk, dq_bl8_cases)
self.specials += [
Instance("ODDRX2DQA",
i_RST = ResetSignal("sys"),
i_RST = ResetSignal("sys") | self._rst.storage,
i_SCLK = ClockSignal("sys"),
i_ECLK = ClockSignal("sys2x"),
i_DQSW270 = dqsw270,
@ -319,7 +321,7 @@ class ECP5DDRPHY(Module, AutoCSR):
)
]
dq_i_bitslip = BitSlip(4,
rst = self._dly_sel.storage[i] & self._rdly_dq_bitslip_rst.re,
rst = (self._dly_sel.storage[i] & self._rdly_dq_bitslip_rst.re) | self._rst.storage,
slp = self._dly_sel.storage[i] & self._rdly_dq_bitslip.re,
cycles = 1)
self.submodules += dq_i_bitslip
@ -333,7 +335,7 @@ class ECP5DDRPHY(Module, AutoCSR):
o_Z = dq_i_delayed
),
Instance("IDDRX2DQA",
i_RST = ResetSignal("sys"),
i_RST = ResetSignal("sys") | self._rst.storage,
i_SCLK = ClockSignal("sys"),
i_ECLK = ClockSignal("sys2x"),
i_DQSR90 = dqsr90,
@ -350,7 +352,7 @@ class ECP5DDRPHY(Module, AutoCSR):
self.comb += dfi.phases[n//4].rddata[n%4*databits+j].eq(dq_i_data[n])
self.specials += [
Instance("TSHX2DQA",
i_RST = ResetSignal("sys"),
i_RST = ResetSignal("sys") | self._rst.storage,
i_SCLK = ClockSignal("sys"),
i_ECLK = ClockSignal("sys2x"),
i_DQSW270 = dqsw270,