Hi, I installed master branch openwrt onto Asus MAP-AC2200 AP. It has tri band. Its based on IPQ4019 DK04 QCA reference platform. 2 radios (2Ghz/5Ghz) on AHB bus and one 5GHZ on PCIe bus. Its generally working fine except one problem in 5Ghz. On both the 5Ghz radios the RSSI is pretty low on any 5Ghz channel I put it in. In one feet range I see -60dB RSSI, where as the stock firmware that came with the AP gives an RSSI of -36dB at one foot distance.The downstream transmit rates are MCS8/9 for most part. The 2Ghz is working fine. Both radios seem to use the cal data from the flash that came with the AP.
After some discussion with ath10k firmware folks and looking at TPC dump I noticed some differences in TPC between the Asus stock image and openwrt image: Here is the snippet from stock firmware: TPC Config for channel 5765 mode 10 ************************************************** CTL = 0x10 Reg. Domain = 20 Antenna Gain = 0 Reg. Max Antenna Gain = 12 Power Limit = 63 Reg. Max Power = 60 Num tx chains = 2 Num Supported Rates = 109 ************************************************** **************** CDD POWER TABLE **************** ************************************************** Where as in openwrt it is: ************************************* TPC config for channel 5765 mode 10 ************************************* CTL = 0x10 Reg. Domain = 58 Antenna Gain = 0 Reg. Max Antenna Gain = 0 Power Limit = 60 Reg. Max Power = 30 Num tx chains = 2 Num supported rates = 109 ******************************** So looks like reg domain is different even though both are set to US countrycode? (Although I didnt set anything on stock firmware. The countrycode from iwpriv get_countrycode says its 841.) Also, the antenna gain seems different between stock and openwrt firmware.. How to change the reg. domain like in stock firmware in openwrt although I set the country code to US in the uci. root@OpenWrt:/sys# uci show | grep country uhttpd.defaults.country='ZZ' wireless.radio0.country='US' wireless.radio1.country='US' wireless.radio2.country='US' root@OpenWrt:/sys# Thanks for your help! _______________________________________________ openwrt-devel mailing list openwrt-devel@lists.openwrt.org https://lists.openwrt.org/mailman/listinfo/openwrt-devel
