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phy/kusddrphy: use similar bitslip interface than kintex7

This commit is contained in:
Florent Kermarrec 2017-07-10 15:50:31 +02:00
parent 40a8504dd6
commit f251800fb6
2 changed files with 9 additions and 2 deletions
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3
litedram/phy/k7ddrphy.py
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@ -18,10 +18,13 @@ class K7DDRPHY(Module, AutoCSR):
self._wlevel_en = CSRStorage() self._wlevel_en = CSRStorage()
self._wlevel_strobe = CSR() self._wlevel_strobe = CSR()
self._dly_sel = CSRStorage(databits//8) self._dly_sel = CSRStorage(databits//8)
self._rdly_dq_rst = CSR() self._rdly_dq_rst = CSR()
self._rdly_dq_inc = CSR() self._rdly_dq_inc = CSR()
self._rdly_dq_bitslip = CSR() self._rdly_dq_bitslip = CSR()
self._wdly_dq_rst = CSR() self._wdly_dq_rst = CSR()
self._wdly_dq_inc = CSR() self._wdly_dq_inc = CSR()
self._wdly_dqs_rst = CSR() self._wdly_dqs_rst = CSR()

8
litedram/phy/kusddrphy.py
View File

@ -24,7 +24,7 @@ class KUSDDRPHY(Module, AutoCSR):
self._rdly_dq_rst = CSR() self._rdly_dq_rst = CSR()
self._rdly_dq_inc = CSR() self._rdly_dq_inc = CSR()
self._rdly_dq_bitslip = CSRStorage(3) self._rdly_dq_bitslip = CSR()
self._wdly_dq_rst = CSR() self._wdly_dq_rst = CSR()
self._wdly_dq_inc = CSR() self._wdly_dq_inc = CSR()
@ -200,7 +200,11 @@ class KUSDDRPHY(Module, AutoCSR):
dq_bitslip = BitSlip(8) dq_bitslip = BitSlip(8)
self.sync += \ self.sync += \
If(self._dly_sel.storage[i//8], If(self._dly_sel.storage[i//8],
dq_bitslip.value.eq(self._rdly_dq_bitslip.storage) If(self._rdly_dq_rst.re,
dq_bitslip.value.eq(0)
).Elif(self._rdly_dq_bitslip.re,
dq_bitslip.value.eq(dq_bitslip.value + 1)
)
) )
self.submodules += dq_bitslip self.submodules += dq_bitslip
self.specials += [ self.specials += [