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WL1807MOD: Configuring WL18xx Antenna mode while loading Driver

paddu2017
Expert 2885 points
Part Number: WL1807MOD

Hi,

We would like to know if it is possible to change the antenna mode(MIMO/SISO)
while loading the driver through module parameters?

We are trying to run below commands to change the mode.

1.SISO mode:
insmod /lib/modules/2.6.38.8/updates/drivers/net/wireless/ti/wl18xx/wl18xx.ko n_antennas_5=0 n_antennas_2=1 ht_mode=siso20


2.MIMO mode:
insmod /lib/modules/2.6.38.8/updates/drivers/net/wireless/ti/wl18xx/wl18xx.ko n_antennas_5=0 n_antennas_2=2

but in both cases we get same LOG below saying it is in MIMO mode for both the commands.

"[131.080000] wlcore: wl18xx HW: RDL 2, 1857 MIMO, PG 2.2 (ROM 0x11)"

Please let me know if there is anything missing.


Best Regards
Paddu

  • 0
    TI__Mastermind 35795 points
    Hi ,
    You will need to modify wl18xx-conf.bin to specify SISO/MIMO mode.
    Please refer to this document: www.ti.com/.../swra489.pdf

    Saurabh
  • 0 in reply to S
    Expert 2885 points
    Hi Saurabh,

    Thank you very much for the reply.

    We need one confirmation,
    is the above mentioned is the only option recommended to change the mode?
    Can we assume it is not possible change the mode in Module parameter?

    Best Regards
    Paddu
  • 0 in reply to paddu2017
    Expert 2885 points
    Hi Saurabh,

    Please let me ask an additional question on this.

    Looking into the wlconf application note, we understand that
    by default the ht_mode=1,SISO40.

    But, our LOG says MIMO as shown below.
    [27.950000] wlcore: wl18xx HW: RDL 2, 1857 MIMO, PG 2.2 (ROM 0x11)

    In this case, does it mean wl18xx-conf.bin settings is not reflected yet?
    Does the "/sys/module/wl18xx/parameters" info not useful to find out the mode info?

    Best Regards
    Paddu
  • 0 in reply to paddu2017
    TI__Mastermind 35795 points
    Hi Paddu,
    Parameters configured in wl18xx-conf.bin determine if MIMO is enabled or not . You will need to modify this file in case you need to enable/disable MIMO. Please consult wlconf application note , print wl18xx-conf.bin dump file and check the value of wl18xx.ht.mode and wl18xx.phy.number_of_assembled_ant2_4

    Saurabh