Hello,
I am trying to test the AD9084_EBZ GPIO hop mode, using a VPK180 running Kuiper Linux, but facing difficulties.
Here is what I have done so far:
I am using device-profile-fw-name = "204C_M4_L4_NP16_20p0_4x4.bin", which has the quick profile cfg set to 0.
I updated ad9088_ffh.c line 40, as the bit count was being overwritten by the error return value of read_u32_array.
I have also added the following lines to my device tree in the ad9084@0 section, to expose the GPIO hop control pins to the drivers. This matches quick_config_profile_3. 
gpio-export becomes gpiochip3 here, and the hop parameters get attributed correctly looking through dmesg.
I then set the mode as follows: ``` echo 3 > in_voltage0_i_ffh_fnco_mode ``` and do the same for the CNCO, after running through a profile setup script, which simply fills all FNCO and CNCO profiles.
I then try to toggle the hop on the RX0 FNCO by using block = 0x0, terminal = 0x1, and writing a random value for the profile. No matter if I use gpioset/get methods on gpiochip3 or gpiochip0 I am unable to see the frequency shift.
I have also tried writing directly to the axi-gpio module using devmem, which resulted in the same.
Any help would be greatly appreciated, thank you
