From 76254274f72d666dba45a79d84c4a1a06f577b75 Mon Sep 17 00:00:00 2001 From: Jean THOMAS Date: Fri, 7 Aug 2020 13:57:35 +0200 Subject: [PATCH] gram.phy.ecp5ddrphy: Fix ECP5DDRPHYInit (wrong domains) --- gram/phy/ecp5ddrphy.py | 11 ++++------- 1 file changed, 4 insertions(+), 7 deletions(-) diff --git a/gram/phy/ecp5ddrphy.py b/gram/phy/ecp5ddrphy.py index ccea0ea..752d021 100644 --- a/gram/phy/ecp5ddrphy.py +++ b/gram/phy/ecp5ddrphy.py @@ -32,12 +32,13 @@ class ECP5DDRPHYInit(Elaboratable): def elaborate(self, platform): m = Module() - new_lock = Signal() update = Signal() freeze = Signal() # DDRDLLA instance ------------------------------------------------------------------------- _lock = Signal() + lock = Signal() + lock_d = Signal() m.submodules += Instance("DDRDLLA", i_CLK=ClockSignal("sync2x"), i_RST=ResetSignal("init"), @@ -45,11 +46,8 @@ class ECP5DDRPHYInit(Elaboratable): i_FREEZE=freeze, o_DDRDEL=self.delay, o_LOCK=_lock) - lock = Signal() - lock_d = Signal() m.submodules += FFSynchronizer(_lock, lock, o_domain="init") m.d.init += lock_d.eq(lock) - m.d.sync += new_lock.eq(lock & ~lock_d) # DDRDLLA/DDQBUFM/ECLK initialization sequence --------------------------------------------- t = 8 # in cycles @@ -65,9 +63,8 @@ class ECP5DDRPHYInit(Elaboratable): (9*t, [update.eq(0)]), # Release DDRDMMA update (10*t, [self.pause.eq(0)]), # Release DQSBUFM pause ]) - m.submodules += tl - # Wait DDRDLLA Lock - m.d.comb += tl.trigger.eq(new_lock) + m.d.comb += tl.trigger.eq(lock & ~lock_d) # Trigger timeline on lock rising edge + m.submodules += DomainRenamer("init")(tl) return m -- 2.30.2