In some cases (GTX2) the transceiver may gate the out_clk when it is in
reset. This will stop the clock generators from getting a clock prior
removing the reset of the XCVR. The XCVR has a requirement of running
user clock while removing the reset. The correct sequence must be :
Enable device clocks (user clock)
Remove the reset from the XCVR
When phase alignment is active, the PFD frequency value should be used
as outclk1 actual frequency.
The configuration interface of the fPLL does not support fractional values.
If the reference clock is fractional, the tool will throw an error that requirement
above is not respected.
Round up the reference clock for the SERDES and the lane rate in order to
overcome this issue, until it's not fixed by Intel.
The process ad_xcvrcon has a device_clk attribute which can be used to
connect a custom device clock to the XCVR. Fix the proc call so we can
simplify the block design script.
Use the new util_cpack2 and util_upack2 cores. They have lower utilization
that the old util_cpack and util_upack cores.
Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
This change adds the TLAST signal to the AXI streaming interface
of the source side for Intel targets.
Xilinx based designs already have this since the tlast is part of the
interface definition.
In order to make the signal optional and let the tool connect a
default value to the it, the USE_TLAST_SRC/DEST parameter is
added to the configuration UI. This conditions the tlast port on
the interface of the DMAC.
Xilinx handles the optional signals much better so the parameter
is not required there.
The TX side runs on QPLL, and the RX and RX_OS runs on CPLL by default.
The OUTCLK frequency is the same as the REFCLK.
The main reason of this modification is that the links should come up
without any DPR access, after power up, using the default reference clock
configuration (122.88 MHz).
Currently the TX lane mapping is implemented by having to connect tx_phy_s_* to
the tx_ip_s_* and the tx_phy_d_* to the tx_ip_d_* signals in the system
qsys file in the desired order.
Re-work things so that instead the lane mapping is provided through the
TX_LANE_MAP parameter. The parameter specifies in which order logical lanes
are mapped onto the physical lanes.
The appropriate connections are than made inside the core according to this
parameter rather than having to manually connect the signals externally.
In order to generate a 1-to-1 mapping the TX_LANE_MAP parameter can be left
empty.
This change slightly reduces the boiler-plate code that is necessary to
setup the transceiver.
Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
The PLL frequency must be half of the lane rate and the core clock rate
must be lane rate divided by 40. There is no other option, otherwise things
wont work.
Instead of having to manually specify PLL and core clock frequency derive
them in the transceiver script. This reduces the risk of accidental
misconfiguration.
Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
Qsys allows to query to query the clock domain that is associated with a
clock input of a peripheral. This allows to automatically detect whether
the different clocks of the DMAC are asynchronous and CDC logic needs to be
inserted or not.
Auto-detection has the advantages that the configuration parameters don't
need to be set manually and the optional configuration will be choose
automatically. There is also less chance of error of leaving the settings
in a wrong configuration when e.g. the clock domains change.
In case the auto-detection should ever fail configuration options that
provide a manual overwrite are added as well.
Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
Convert the ADRV9371 project to the ADI JESD204 link layer cores. The
change is very straight forward, but a matching change on the software side
is required.
Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
Because the S_AXI interface of the axi_adxcvr core was infered
using the process adi_ip_properties, the interface address range
has changed from 4k to 64k. As a result, all the addresses of
the axi_adxcvr cores were changed and realigned.
AndrDragomir
Laszlo Nagy
Filip Gherman
Iacob_Liviu
Istvan Csomortani
AndreiGrozav
Lars-Peter Clausen
Rejeesh Kutty
Adrian Costina