de0nano: call sdram mask dm, not dqm (follow other platforms and gensdrphy)
wishbone2lasmi: fix wordbits computation
wishbone2lasmi: fix wordbits computation
mibuild: remove useless 'reduce_control_sets auto'
Merge branch 'master' of https://github.com/m-labs/migen
mibuild/altera_quartus: use default gui command line parameters (enable pll constraints propagation) and remove deprecated methods
mibuild: expose add_period_constraint (easier to use for simple designs than vendor specific code)
mibuild/platforms: use add_period_constraint
mibuild/altera_quartus: use default gui command line parameters (enable pll constraints propagation) and remove deprecated methods
mibuild: expose add_period_constraint (easier to use for simple designs than vendor specific code)
mibuild/platforms: use add_period_constraint
Merge branch 'master' of https://github.com/m-labs/migen
fsm: set reset_state as default state
fifo: add support for depth=2
migen/bank/description: add reset parameter to CSRStatus
initial Vivado support and add toolchain attr to XilinxISEPlatform & AlteraQuartusPlatform
lasmicon/lasmibus: simplify dat_ack by splitting it in dat_w_ack and dat_r_ack. dat_w must be presented when dat_w_ack is set. dat_r is valid when dat_r_ack is set.

In the old version, write_latency and read_latency on data was managed
directly in the ports which was not easy to do.
mixxeo: add serial_debug for miscope