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Merge pull request #675 from enjoy-digital/spi_opi_dq_oe_dq_copi 

soc/cores/spi_opi: expose dq/dq_copi to allow constrainting them from…
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bunnie 2020-10-14 18:45:13 +08:00 committed by GitHub
parent 4d553a6fc0 c6f7f0210a
commit d23b88f739
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1 changed files with 2 additions and 2 deletions
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litex/soc/cores/spi_opi.py
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@ -128,7 +128,7 @@ class S7SPIOPI(Module, AutoCSR, AutoDoc):
self.comb += self.di.eq(Cat(di_fall, di_rise)) self.comb += self.di.eq(Cat(di_fall, di_rise))
# OPI DDR registers # OPI DDR registers
dq = TSTriple(7) # dq[0] is special because it is also copi self.dq = dq = TSTriple(7) # dq[0] is special because it is also copi
dq_delayed = Signal(8) dq_delayed = Signal(8)
self.specials += dq.get_tristate(pads.dq[1:]) self.specials += dq.get_tristate(pads.dq[1:])
for i in range(1, 8): for i in range(1, 8):
@ -211,7 +211,7 @@ class S7SPIOPI(Module, AutoCSR, AutoDoc):
] ]
# bit 0 (copi) is special-cased to handle SPI mode # bit 0 (copi) is special-cased to handle SPI mode
dq_copi = TSTriple(1) # this has similar structure but an independent "oe" signal self.dq_copi = dq_copi = TSTriple(1) # this has similar structure but an independent "oe" signal
self.specials += dq_copi.get_tristate(pads.dq[0]) self.specials += dq_copi.get_tristate(pads.dq[0])
do_mux_rise = Signal() # mux signal for copi/dq select of bit 0 do_mux_rise = Signal() # mux signal for copi/dq select of bit 0
do_mux_fall = Signal() do_mux_fall = Signal()