microwatt/fpga
Benjamin Herrenschmidt e5aa0e9dc9 uart: Remove combinational loops on ack and stall signal
They hurt timing forcing signals to come from the master and back
again in one cycle. Stall isn't sampled by the master unless there
is an active cycle so masking it with cyc is pointless. Masking acks
is somewhat pointless too as we don't handle early dropping of cyc
in any of our slaves properly anyways.

Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
..
LICENSE Initial import of microwatt
arty_a7.xdc spi: Add SPI Flash controller
clk_gen_bypass.vhd Fix clk_gen_bypass
clk_gen_mcmm.vhd Improve PLL/MMCM clocks configuration
clk_gen_plle2.vhd Improve PLL/MMCM clocks configuration
cmod_a7-35.xdc Add SPI configuration to Xilinx constraint files
firmware.hex Add a few more FPGA related files
hello_world.hex hello_world: Use new headers and frequency from syscon
main_bram.vhdl Fix some ghdlsynth issues with fpga_bram
nexys-video.xdc spi: Add SPI Flash controller
nexys_a7.xdc Add SPI configuration to Xilinx constraint files
pp_fifo.vhd pp_fifo: Fix full fifo losing all data on simultaneous push & pop
pp_soc_uart.vhd uart: Remove combinational loops on ack and stall signal
pp_utilities.vhd Initial import of microwatt
soc_reset.vhdl soc_reset: Use counters, add synchronizers
soc_reset_tb.vhdl Exit cleanly from testbench on success
top-arty.vhdl spi: Add SPI Flash controller
top-generic.vhdl spi: Add SPI Flash controller
top-nexys-video.vhdl spi: Add SPI Flash controller