fix(ad9081): mode-table M/F now match the jesd204b mode-10/9 reality

The ADC (jtx) mode 10 jesd204b and DAC (jrx) mode 9 jesd204b entries
in ``_AD9081_{RX,TX}_MODE_TABLE`` were set to ``M=4``, but the
AD9081 API mode table and the stock Kuiper
``zynqmp-zcu102-rev10-ad9081-m8-l4`` reference DTS both set ``M=8``
for those modes.  The XSA path emits ``converters-per-device = <8>``
because it sources framing straight from the pyadi-jif solver
(which asks for ``M=8, L=4`` and returns mode 10/9) — so the XSA
hw test works.

The System-API path goes through ``ConverterSide.set_jesd204_mode``
which filled framing from our mode table, so ``converters-per-device``
came out ``<4>``.  On hardware the kernel AD9081 driver then
programmed the TPL + ADXCVR for fewer converters than the part's
jtx actually frames, and the JESD PLL never locked
("ad9081 ...: JESD PLL is not locked.  Failed to initialize: -24").

Correct both table entries to ``M=8, L=4, F=4``.  RX mode 10's
``F=2`` was also wrong — the reference DTS and the XSA solver both
use ``octets-per-frame = <4>``, so the ADC's 4-octet framing now
matches.

Unit tests still pass (no fixed-M=4 expectation anywhere).

Author: tfcollins

adidt/devices/converters/ad9081.py

@@ -15,13 +15,23 @@
 
 _AD9081_RX_MODE_TABLE: dict[tuple[int, str] | int, dict[str, int]] = {
     (1, "jesd204c"): {"M": 2, "L": 1, "F": 4, "K": 32, "Np": 16, "S": 1},
-    (10, "jesd204b"): {"M": 4, "L": 4, "F": 2, "K": 32, "Np": 16, "S": 1},
+    # JTX mode 10 jesd204b on AD9081-FMCA-EBZ/ZCU102 uses M=8 (per the
+    # AD9081 API mode table and the stock Kuiper
+    # ``zynqmp-zcu102-rev10-ad9081-m8-l4`` reference DTS: the
+    # ``adi,rx-adcs`` block emits ``converters-per-device = <8>``).
+    # Using M=4 here breaks the kernel's JESD PLL lock step
+    # ("ad9081 ...: JESD PLL is not locked.") because the TPL + xcvr
+    # are programmed for fewer converters than the part's jtx actually
+    # frames.
+    (10, "jesd204b"): {"M": 8, "L": 4, "F": 4, "K": 32, "Np": 16, "S": 1},
     (18, "jesd204c"): {"M": 4, "L": 8, "F": 1, "K": 32, "Np": 16, "S": 1},
 }
 
 _AD9081_TX_MODE_TABLE: dict[tuple[int, str] | int, dict[str, int]] = {
     (1, "jesd204c"): {"M": 2, "L": 1, "F": 4, "K": 32, "Np": 16, "S": 1},
-    (9, "jesd204b"): {"M": 4, "L": 4, "F": 4, "K": 32, "Np": 16, "S": 1},
+    # JRX mode 9 jesd204b on the same FMC: M=8 per the AD9081 API
+    # mode table and the reference ``adi,tx-dacs`` block (F=4).
+    (9, "jesd204b"): {"M": 8, "L": 4, "F": 4, "K": 32, "Np": 16, "S": 1},
     (17, "jesd204c"): {"M": 4, "L": 8, "F": 2, "K": 32, "Np": 16, "S": 1},
 }