I'm currently working on D-Link DAP-2660, which is similar to DAP-2695 (just with AC1200 and a white plastic case instead of plenum-rated metal).
Both wireless interfaces are working, I have a working factory-flashable image (tested on A2, but should also work for A1; the difference is apparently that A2 need some padding to make the image file bigger...), now the only issue is that I couldn't get the AR8035 Gigabit Ethernet PHY (AR8035) to work with 1000BASE-T, however it will work fine as long as the remote NIC is set to 10 or 100 Mbit/s fixed rate.
The PLL clock values for the GMAC were determined from the bootloader, i.e. entering recovery with different fixed link rates and dumping the corresponding GMAC PLL register values as written by the OEM uboot, as described here for DAP-2360.
// edit 2020-09-09: fixed green led mapping
But still no success
Is there anything left to be configured in the .dts that i overlooked?
Does someone own this device and could help testing?
I have enabled wifi by default using dap2660 and dlinktest as ESSID / PSK, to avoid lock-out of the device. Beware that UART is 2.5 V for this device! (two CP2102 dongles died figuring this out ) It is however safe to just connect RX and GND to read the bootlog, the 2.5V level is sufficient to be interpreted as high.
The DD-WRT folks seem to have this device supported and working, but not even using a devicetree based target in the first place...