The previous mechanism was "probing" the DMAs for valid data. Better said,
each interpolation channel enabled it's DMA until a valid data was received,
then it disabled the DMA read and waited for the adjacent channel(DMA) to
receive a valid data. Only when for both channels had valid data on the
DMAs interfaces was the transmission started. This added an undesired and
redundant complexity to the interpolation channels. Furthermore, for continuous
transmission, using the above mechanism lead to a fixed phase(sample)
shift between the two channels at each start.
By using the streaming mechanism the interface is simplified and the
above problems are solved.
- remove interrupts from system_top
- for all suported carriers:
- remove all interrupt bd pins
- connect to GND all initial unconnected interrupt pins
- update ad_cpu_interrupt procedure to disconnect a interrupt from GND
before connectiong it to another pin.
Removes a lot of boilerplate code.
Using the new scheme it is possible to add new projects or sub-projects
without having to re-generate any existing Makefiles.
Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
This reduces the amount of boilerplate code that is present in these
Makefiles by a lot.
It also makes it possible to update the Makefile rules in future without
having to re-generate all the Makefiles.
Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
Loop back the unused GPIO pins, and add all the SPI interface to system
wrapper instance.
The following system_top modules were changed:
- ad738x_fmc
- ad7616_sdz
- ad77681evb
- ad77681evb
- ad7768evb
- ad9739a_fmc
- ad9434
- adrv9739
- fmcadc5
- ad6676evb
- ad9265
- ad5766
- fmcomms5
- m2k
The util_cpack core is currently not used by the M2K project. Refresh the
Makefiles to reflect this.
Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
All the hdl (verilog and vhdl) source files were updated. If a file did not
have any license, it was added into it. Files, which were generated by
a tool (like Matlab) or were took over from other source (like opencores.org),
were unchanged.
New license looks as follows:
Copyright 2014 - 2017 (c) Analog Devices, Inc. All rights reserved.
Each core or library found in this collection may have its own licensing terms.
The user should keep this in in mind while exploring these cores.
Redistribution and use in source and binary forms,
with or without modification of this file, are permitted under the terms of either
(at the option of the user):
1. The GNU General Public License version 2 as published by the
Free Software Foundation, which can be found in the top level directory, or at:
https://www.gnu.org/licenses/old-licenses/gpl-2.0.en.html
OR
2. An ADI specific BSD license as noted in the top level directory, or on-line at:
https://github.com/analogdevicesinc/hdl/blob/dev/LICENSE
The input clock frequency of the axi_clkgen was changed from 200 MHz to
100 Mhz. Update the divider settings accordingly to keep the standard
default output frequency of 148.5 MHz.
The incorrect divider settings did not affect operation of the design since
software reprograms them at startup anyway, but changing them avoids the
following warning:
[DRC 23-20] Rule violation (AVAL-46) v7v8_mmcm_fvco_rule1 - The current computed target frequency, FVCO, is out of range for cell i_system_wrapper/system_i/axi_hdmi_clkgen/inst/i_mmcm_drp/i_mmcm. The computed FVCO is 445.455 MHz. The valid FVCO range for speed grade -1 is 600MHz to 1200MHz. The cell attribute values used to compute FVCO are CLKFBOUT_MULT_F = 49.000, CLKIN1_PERIOD = 10.00000, and DIVCLK_DIVIDE = 11 (FVCO = 1000 * CLKFBOUT_MULT_F/(CLKIN1_PERIOD * DIVCLK_DIVIDE)).
This violation may be corrected by:
1. The timer uses timing constraints for clock period or clock frequency that affect CLKIN1 to set cell attribute CLKIN1_PERIOD, over-riding any previous value. This may already be in place and, if so this violation will be resolved once Timing is run. Otherwise, consider modifying timing constraints to adjust the CLKIN1_PERIOD and bring FVCO into the allowed range.
2. In the absence of timing constraints that affect CLKIN1, consider modifying the cell CLKIN1_PERIOD to bring FVCO into the allowed range.
3. If CLKIN1_PERIOD is satisfactory, modify the CLKFBOUT_MULT_F or DIVCLK_DIVIDE cell attributes to bring FVCO into the allowed range.
4. The MMCM configuration may be dynamically modified by use of DRP which is recognized by an ACTIVE signal on DCLK pin.
Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
For the M2K standalone version we run the interface clock at a lower rate
to reduce the power consumption. While this is not necessary on the ZED
board we also run the interface at a lower rate for consistency.
Currently the video DMA on the ZED board uses the interface clock for the
data path as well. This is now too slow to support 1080p@60Hz so move it
over to a faster clock.
Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
At the moment the PS7 is using three PLLs to generate its clocking tree.
One for the DDR, one for the ARM and one for the IO. This allows to run all
components at their respective maximum clock and extract maximum
performance from all components.
With some slight modifications it is possible to trade maximum performance
for a reduction in power consumption by using the same PLL for all three
sets of components and disabling the other two PLLs.
The CPU is now running at 500MHz rather than 666MHz and the DDR memory at
500MHz rather than 533MHz. This reduces power consumption by ~125mW.
This is OK since neither of them is a bottleneck for overall system
performance.
In addition software will downclock the CPU to 250MHz when full performance
is not required.
Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
The 200 MHz clock was only used as the IODELAY controller clock. Since the
design does not use any IODELAYs anymore this clock can be removed.
Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
The debug register logic for the DMA take up a fair amount of resources.
Disabling them frees up space in the FPGA and also helps a bit with power.
Since those registers are mainly useful in development and not so much in
production the change shouldn't have any visible external effects.
It is possible to re-enable the debug registers by setting DEBUG_BUILD=1.
Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
AndreiGrozav
Istvan Csomortani
Laszlo Nagy
Adrian Costina
Lars-Peter Clausen
Rejeesh Kutty