LNA and PA for TPLINK

For Developers
1

Hi,
It looks like the wifi speed lower than factory one after flashing openwrt. So my question is how to enable LNA and PA on board?
Is it just controlled by gpio pins? And if is, how to decide which pin and how to test?

Like one my board, there is 22 pins on gpiochip0, should I output high for each gpio to find it out?

2

which device?

3

It's TPLINK WDR7800

4

there are no reasonable specifications for that device yet. best if you go ask on mailing list