To slow BCM43143 on SDIO on Linux. Speed less than 1 MB/sec

[Anonymous]

Hi. I use BCM43143 on SDIO on Linux 4.8.17 with TI Beaglebone like hardware.

Have 2 issue:

1. BCM43143 does not see all WiFi networks. For example it does not see (not scanned) soft AP from my Android phone. I try different countries (crda), and its looks like not country issue.

2. Speed is to slow. I test with iperf3 and wget and WiFi speed is less then 1 MB/sec with good signal:

# iwconfig wlan0
wlan0     IEEE 802.11  ESSID:"Promwad Test"  
          Mode:Managed  Frequency:2.412 GHz  Access Point: 04:18:D6:35:4E:C8   
          Bit Rate=72.2 Mb/s   Tx-Power=31 dBm   
          Retry short limit:7   RTS thr:off   Fragment thr:off
          Encryption key:off
          Power Management:on
          Link Quality=64/70  Signal level=-46 dBm  
          Rx invalid nwid:0  Rx invalid crypt:0  Rx invalid frag:0
          Tx excessive retries:0  Invalid misc:0   Missed beacon:0

# iperf3 -c 10.54.4.113
Connecting to host 10.54.4.113, port 5201
[  4] local 10.54.11.203 port 36276 connected to 10.54.4.113 port 5201
[ ID] Interval           Transfer     Bandwidth       Retr  Cwnd
[  4]   0.00-1.00   sec   645 KBytes  5.28 Mbits/sec    0   56.6 KBytes       
[  4]   1.00-2.00   sec   560 KBytes  4.59 Mbits/sec    0   56.6 KBytes       
[  4]   2.00-3.00   sec   576 KBytes  4.71 Mbits/sec    0   56.6 KBytes       
[  4]   3.00-4.00   sec   568 KBytes  4.66 Mbits/sec    0   56.6 KBytes       
[  4]   4.00-5.00   sec   578 KBytes  4.74 Mbits/sec    0   56.6 KBytes       
^C[  4]   5.00-5.63   sec   351 KBytes  4.55 Mbits/sec    0   56.6 KByte

Note: driver load brcmfmac43143-sdio.txt. Could you please provide sample of this driver, may be my brcmfmac43143-sdio.txt is bad.

[MichaelF_56]

I am not familiar with a BCM43143. Which partner module are you using in production?

[Anonymous]

Hi Mifo, thank you for answer.

We are using custom board with BCM43143 (CYW43143) http://www.cypress.com/file/298756/download

[MichaelF_56 · Accepted solution]

Since this specific device (or any forms of chip down designs) is not supported in the broad market, it wont be supported here on the community website.  You will want to reach out to the local Cypress/Distribution team that enabled you on this platform to line up the necessary factory support.