how to disable TX_EN of 21540 in NCS2.0.2

Hi,

nRF5340 + nRF21540, NCS2.0.2, VScode

i follow Working with RF front-end modules — nRF Connect SDK 2.0.99 documentation (nordicsemi.com)

how to disable TX_EN?  i only need recv.

as follow pic, i have set GPIO mode to three overlay file.

demo\boards\nrf5340dk_nrf5340_cpuapp.overlay

demo\child_image\hci_rpmsg.overlay

demo\child_image\hci_rpmsg\boards\nrf5340dk_nrf5340_cpunet.overlay

the pins same to EK,

in fact,  No matter what value I set as follow 5 line,  and re do add build,

it can receive and transmit.  even pdn-gpios = < &arduino_header 0xf 1 >; or pdn-gpios = < &arduino_header 0xf 0 >;

        tx-en-gpios
        rx-en-gpios
        pdn-gpios
        ant-sel-gpios
        mode-gpios
    
Best regards
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