[PATCH v3 2/2] doc: add Arkville FX2 PCIe device description

[Shepard Siegel <shepard.siegel@atomicrules.com>]

Update net/ark guide for clarity.
Include list of FX0, FX1 and FX2 PCIe devices.

Signed-off-by: Shepard Siegel <shepard.siegel@atomicrules.com>
---
 doc/guides/nics/ark.rst | 20 ++++++++++++++++++++
 1 file changed, 20 insertions(+)

diff --git a/doc/guides/nics/ark.rst b/doc/guides/nics/ark.rst
index ba00f14e80..39cd75064d 100644
--- a/doc/guides/nics/ark.rst
+++ b/doc/guides/nics/ark.rst
@@ -52,6 +52,10 @@ board. While specific capabilities such as number of physical
 hardware queue-pairs are negotiated; the driver is designed to
 remain constant over a broad and extendable feature set.
 
+* FPGA Vendors Supported: AMD/Xilinx and Intel
+* Number of RX/TX Queue-Pairs: up to 128
+* PCIe Endpoint Technology: Gen3, Gen4, Gen5
+
 Intentionally, Arkville by itself DOES NOT provide common NIC
 capabilities such as offload or receive-side scaling (RSS).
 These capabilities would be viewed as a gate-level "tax" on
@@ -302,6 +306,20 @@ ARK PMD supports the following Arkville RTL PCIe instances including:
 * ``1d6c:101c`` - AR-ARK-SRIOV-VF [Arkville Virtual Function]
 * ``1d6c:101e`` - AR-ARKA-FX1 [Arkville 64B DPDK Data Mover for Agilex R-Tile]
 * ``1d6c:101f`` - AR-TK242 [2x100GbE Packet Capture Device]
+* ``1d6c:1022`` - AR-ARKA-FX2 [Arkville 128B DPDK Data Mover for Agilex]
+
+Arkville RTL Core Configurations
+-------------------------------------
+
+Arkville's RTL core may be configured by the user for three different
+datapath widths to balance throughput against FPGA logic area. The ARK PMD
+has introspection on the RTL core configuration and acts accordingly.
+All three configurations present identical RTL user-facing AXI stream
+interfaces for both AMD/Xilinx and Intel FPGAs.
+
+* ARK-FX0 - 256-bit 32B datapath (PCIe Gen3, Gen4)
+* ARK-FX1 - 512-bit 64B datapath (PCIe Gen3, Gen4, Gen5)
+* ARK-FX2 - 1024-bit 128B datapath (PCIe Gen5x16 Only)
 
 DPDK and Arkville Firmware Versioning
 -------------------------------------
@@ -334,6 +352,8 @@ Supported Features
 ------------------
 
 * Dynamic ARK PMD extensions
+* Dynamic per-queue MBUF (re)sizing up to 32KB
+* SR-IOV, VF-based queue-segregation
 * Multiple receive and transmit queues
 * Jumbo frames up to 9K
 * Hardware Statistics
-- 
2.25.1