For the source controller use the pause signal that has been properly
transferred to the source clock domain rather than the pause signal from
the request clock domain.
Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
When having multiple DMA cores sharing the same constraint file Vivado
seems to apply the constraints from the first core to all the other cores
when re-running synthesis and implementation from within the Vivado GUI.
This causes wrong timing constraints if the DMA cores have different
configurations. To avoid this issue use a TTCL template that generates a
custom constraint file for each DMA core instance.
This also allows us to drop the asynchronous clock detection hack from the
constraint file and move it to the template and only generate the CDC
constraints if the clock domains are asynchronous.
Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
The synchronization interface is a single bidirectional line. Output for Master, input for Slave.
The sync_period value is relative to frame length and the digital interface clock. The actual synchronization
period will be: sync_period * frame_length * fb_clock_cycle
The converters on the usdrx1 generate 2.5GB/s. This more than we can
transport over the HP interconnects to the system memory.
Add a dedicated DDR FIFO to design which can be used to buffer the data
before it is transferred to the main memory.
Also increase the interconnect clock rate from 100MHz to 200MHz and the DMA
FIFO size from 4 to 8, so we can transfer the captured data faster to the
main memory.
Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
The memory mapped AXI interfaces for the AXI-DMAC are uni-directional.
Which means they are either write-only or read-only. Unfortunately the
Altera tools can't handle this, so we had to add dummy signals for the
other direction.
The Xilinx tools on the other hand handle uni-directional AXI interfaces
and in fact IPI can do a better job and use less resources when creating
the AXI interconnects when it knows that the interface is uni-directional.
So always disable the dummy ports for the IPI package.
Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
The converters on the usdrx1 generate 2.5GB/s. This more than we can
transport over the HP interconnects to the system memory.
Add a dedicated DDR FIFO to design which can be used to buffer the data
before it is transferred to the main memory.
Also increase the interconnect clock rate from 100MHz to 200MHz and the DMA
FIFO size from 4 to 8, so we can transfer the captured data faster to the
main memory.
Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
Adrian Costina
Lars-Peter Clausen
Istvan Csomortani
Rejeesh Kutty