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ad916x_fmc: Replace dacfifo with data_offload #1975

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2fcff59
ad916x_fmc: Replace dacfifo with data_offload
podgori Dec 10, 2025
981e128
docs: ad916x_fmc: Update for Data Offload support
podgori Dec 11, 2025
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22 changes: 5 additions & 17 deletions docs/projects/ad916x_fmc/ad916x_fmc_zcu102_block_diagram.svg
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15 changes: 8 additions & 7 deletions docs/projects/ad916x_fmc/index.rst
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Original file line number Diff line number Diff line change
Expand Up @@ -69,6 +69,10 @@ The data path and clock domains are depicted in the below diagram:
- :git-hdl:`axi_dmac <library/axi_dmac>`
- :ref:`axi_dmac`
- ---
* - DATA_OFFLOAD
- :git-hdl:`data_offload <library/data_offload>`
- :ref:`data_offload`
- ---
* - TX JESD LINK
- axi_ad916x_jesd
- :ref:`axi_jesd204_tx`
Expand All @@ -81,10 +85,6 @@ The data path and clock domains are depicted in the below diagram:
- :git-hdl:`library/xilinx/util_adxcvr`
- :ref:`util_adxcvr`
- ---
* - UTIL_DACFIFO
- :git-hdl:`util_dacfifo <library/util_dacfifo>`
- ---
- ---
* - UTIL_UPACK
- :git-hdl:`util_upack2 <library/util_pack/util_upack2>`
- :ref:`util_upack2`
Expand Down Expand Up @@ -156,6 +156,7 @@ dac_jesd204_transport 0x84A0_4000
dac_jesd204_xcvr 0x84A6_0000
dac_jesd204_link 0x84A9_0000
dac_dma 0x9C42_0000
dac_data_offload 0x9C43_0000
======================== ===========

SPI connections
Expand Down Expand Up @@ -311,6 +312,9 @@ HDL related
* - AXI_ADXCVR for AMD
- :git-hdl:`library/xilinx/axi_adxcvr`
- :ref:`axi_adxcvr amd`
* - DATA_OFFLOAD
- :git-hdl:`library/data_offload`
- :ref:`data_offload`
Comment on lines +315 to +317
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@IstvanZsSzekely IstvanZsSzekely Dec 19, 2025

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Please add UTIL_DO_RAM to the dependencies list.

* - JESD204_TPL_DAC
- :git-hdl:`library/jesd204/ad_ip_jesd204_tpl_dac`
- :ref:`ad_ip_jesd204_tpl_dac`
Expand All @@ -320,9 +324,6 @@ HDL related
* - UTIL_ADXCVR for AMD
- :git-hdl:`library/xilinx/util_adxcvr`
- :ref:`util_adxcvr`
* - UTIL_DACFIFO
- :git-hdl:`library/util_dacfifo`
- :ref:`util_rfifo`
* - UTIL_UPACK2
- :git-hdl:`library/util_pack/util_upack2`
- :ref:`util_upack2`
Expand Down
7 changes: 5 additions & 2 deletions projects/ad916x_fmc/zcu102/Makefile
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Expand Up @@ -11,17 +11,20 @@ M_DEPS += ../../dac_fmc_ebz/common/dac_fmc_ebz_bd.tcl
M_DEPS += ../../scripts/adi_pd.tcl
M_DEPS += ../../common/zcu102/zcu102_system_constr.xdc
M_DEPS += ../../common/zcu102/zcu102_system_bd.tcl
M_DEPS += ../../common/xilinx/dacfifo_bd.tcl
M_DEPS += ../../common/xilinx/data_offload_bd.tcl
M_DEPS += ../../../library/util_hbm/scripts/adi_util_hbm.tcl
M_DEPS += ../../../library/jesd204/scripts/jesd204.tcl
M_DEPS += ../../../library/common/ad_iobuf.v

LIB_DEPS += axi_dmac
LIB_DEPS += axi_sysid
LIB_DEPS += data_offload
LIB_DEPS += jesd204/ad_ip_jesd204_tpl_dac
LIB_DEPS += jesd204/axi_jesd204_tx
LIB_DEPS += jesd204/jesd204_tx
LIB_DEPS += sysid_rom
LIB_DEPS += util_dacfifo
LIB_DEPS += util_do_ram
LIB_DEPS += util_hbm
LIB_DEPS += util_pack/util_upack2
LIB_DEPS += xilinx/axi_adxcvr
LIB_DEPS += xilinx/util_adxcvr
Expand Down
8 changes: 5 additions & 3 deletions projects/ad916x_fmc/zcu102/system_bd.tcl
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Expand Up @@ -3,11 +3,12 @@
### SPDX short identifier: ADIBSD
###############################################################################

set dac_fifo_address_width 13
## Offload attributes
set dac_offload_type 0 ; ## BRAM
set dac_offload_size [expr $ad_project_params(NUM_LINKS)*$ad_project_params(JESD_L)*64*1024]

source $ad_hdl_dir/projects/scripts/adi_pd.tcl
source $ad_hdl_dir/projects/common/zcu102/zcu102_system_bd.tcl
source $ad_hdl_dir/projects/common/xilinx/dacfifo_bd.tcl

source $ad_hdl_dir/projects/dac_fmc_ebz/common/dac_fmc_ebz_bd.tcl

Expand Down Expand Up @@ -86,6 +87,7 @@ LINKS=$ad_project_params(NUM_LINKS)\
DAC_DEVICE=$ADI_DAC_DEVICE\
DAC_MODE=$ADI_DAC_MODE\
ADI_LANE_RATE=$ADI_LANE_RATE\
DAC_FIFO_ADDR_WIDTH=$dac_fifo_address_width"
DAC_OFFLOAD:TYPE=$dac_offload_type\
SIZE=$dac_offload_size"

sysid_gen_sys_init_file $sys_cstring
4 changes: 0 additions & 4 deletions projects/ad916x_fmc/zcu102/system_top.v
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Original file line number Diff line number Diff line change
Expand Up @@ -69,7 +69,6 @@ module system_top #(
wire [ 2:0] spi1_csn;
wire tx_ref_clk;
wire [ 1:0] tx_sync;
wire dac_fifo_bypass;

// spi

Expand Down Expand Up @@ -113,8 +112,6 @@ module system_top #(
fmc_txen_0
}));

assign dac_fifo_bypass = gpio_o[21];

/* Board GPIOS. Buttons, LEDs, etc... */
assign gpio_i[20: 8] = gpio_bd_i;
assign gpio_bd_o = gpio_o[7:0];
Expand All @@ -125,7 +122,6 @@ module system_top #(
system_wrapper i_system_wrapper (
.gpio_i (gpio_i),
.gpio_o (gpio_o),
.dac_fifo_bypass(dac_fifo_bypass),
.spi0_csn (spi0_csn),
.spi0_miso (spi_miso),
.spi0_mosi (spi_mosi),
Expand Down