Link7688 wifi Tx Power can not be set

[karanyang]

root@SHP-WM01:/# cat /etc/config/wireless

config wifi-device 'radio0'
option type 'ralink'
option variant 'mt7628'
option country 'TW'
option hwmode '11g'
option htmode 'HT40'
option channel 'auto'
option linkit_mode 'ap'
option txpower '10'
option disabled '0'

config wifi-iface 'ap'
option device 'radio0'
option mode 'ap'
option network 'lan'
option ifname 'ra0'
option disabled '0'
option hidden '0'
option ssid 'SHP-WM01'
option seq '1'
option encryption 'psk2'
option key 'Jg5c55grw'

config wifi-iface 'sta'
option device 'radio0'
option mode 'sta'
option network 'wan'
option ifname 'apcli0'
option ssid 'UplinkAp'
option key 'SecretKey'
option encryption 'psk'

root@SHP-WM01:/# iwconfig
eth0.1 no wireless extensions.

lo no wireless extensions.

mon0 no wireless extensions.

ra0 RTWIFI SoftAP ESSID:"SHP-WM01"
Mode:Managed Frequency=2.442 GHz Access Point: 9C:65:F9:CF:8A:CD
Bit Rate=150 Mb/s Tx-Power=20 dBm
Link Quality=10/100 Signal level:0 dBm Noise level:0 dBm
Rx invalid nwid:0 Rx invalid crypt:0 Rx invalid frag:0
Tx excessive retries:0 Invalid misc:0 Missed beacon:0

Set wifi txpower at /etc/config/wireless, but the Tx-Power is still 20dBm, it can't be changed.
How to set the wifi txpower?

[bodgybrothers]

As far as I'm aware, this driver doesn't respond to the normal "/etc/config/wireless" setup. You can set the power int the mt76xx.dat file located in

./feeds/mtk/drivers/mt7628/files/etc/wireless/mt7628

eg
TxPower=100

I too am trying to wrap my head around how to set this up correctly using simple config files.