evm sk板上的wifi速度上不去

大家好，我在用evm　sk的板子的时候，遇到一个问题，就是wl12xx这个wifi的速度上不去，麻烦大家帮忙看一下是什么问题，或是有evm　sk这个板子的可以帮忙测试一下么？

用的是官方的镜像，uboot是我自己编译的(官方的源代码，未改动)，linux内核是4.1.18

Linux am335x-evm 4.1.18-gbbe8cfc #1 PREEMPT Tue Apr 5 19:44:01 EDT 2016 armv7l GNU/Linux

wl12xx的固件版本如下

[ 253.274814] wlcore: firmware booted (Rev 6.3.10.0.141)

信号强度：

Connected to 78:a3:51:2b:f0:d8 (on wlan0)
SSID: LEDE
freq: 2452
RX: 402840 bytes (4287 packets)
TX: 10033219 bytes (6762 packets)
signal: -60 dBm
tx bitrate: 24.0 MBit/s

bss flags: short-preamble short-slot-time
dtim period: 1
beacon int: 100

iperf测试带宽的时候，断断续续，就算有信号，也不超过10mbps

root@am335x-evm:~# iperf -c 192.168.88.137 -t99999 -i1
------------------------------------------------------------
Client connecting to 192.168.88.137, TCP port 5001
TCP window size: 43.8 KByte (default)
------------------------------------------------------------
[ 3] local 192.168.88.200 port 40514 connected with 192.168.88.137 port 5001
[ ID] Interval Transfer Bandwidth
[ 3] 0.0- 1.0 sec 0.00 Bytes 0.00 bits/sec
[ 3] 1.0- 2.0 sec 0.00 Bytes 0.00 bits/sec
[ 3] 2.0- 3.0 sec 128 KBytes 1.05 Mbits/sec
[ 3] 3.0- 4.0 sec 512 KBytes 4.19 Mbits/sec
[ 3] 4.0- 5.0 sec 0.00 Bytes 0.00 bits/sec
[ 3] 5.0- 6.0 sec 0.00 Bytes 0.00 bits/sec
[ 3] 6.0- 7.0 sec 256 KBytes 2.10 Mbits/sec
[ 3] 7.0- 8.0 sec 384 KBytes 3.15 Mbits/sec
[ 3] 8.0- 9.0 sec 0.00 Bytes 0.00 bits/sec
[ 3] 9.0-10.0 sec 0.00 Bytes 0.00 bits/sec
[ 3] 10.0-11.0 sec 0.00 Bytes 0.00 bits/sec
[ 3] 11.0-12.0 sec 0.00 Bytes 0.00 bits/sec
[ 3] 12.0-13.0 sec 0.00 Bytes 0.00 bits/sec
[ 3] 13.0-14.0 sec 0.00 Bytes 0.00 bits/sec
[ 3] 14.0-15.0 sec 0.00 Bytes 0.00 bits/sec

Yaobing, 

https://e2e.ti.com/support/wireless_connectivity/wilink_wifi_bluetooth/

国内已经没有相关的工程师了，建议你到这个论坛去问一下。

好的，谢谢。