Re: [OpenWrt-Devel] One question of ralink wifi ht40 mode

[Сергей Василюгин]

 

 

14.05.2013, 14:10, "Daniel Golle" <dgo...@allnet.de>:

This is because the vendor driver makes ensures operation in HT20 before
triggering RF calibration.

And never set it back to ht40 so works only in ht20 mode? I don't think it's wright. Vendor driver explicitly set ht20 only for scanning (in sta or apsta mode).

On 05/13/2013 08:29 PM, Сергей Василюгин wrote:

 Hi, All

 Anybody knows why ht40 mode explicitly switch off for some ralink wifi?
 rt2800lib.c in function rt2800_config_channel():

     if (rt2x00_rf(rt2x00dev, RF3290) ||
         rt2x00_rf(rt2x00dev, RF3322) ||
         rt2x00_rf(rt2x00dev, RF5350) ||
         rt2x00_rf(rt2x00dev, RF5360) ||
         rt2x00_rf(rt2x00dev, RF5370) ||
         rt2x00_rf(rt2x00dev, RF5372) ||
         rt2x00_rf(rt2x00dev, RF5390) ||
         rt2x00_rf(rt2x00dev, RF5392)) {
         rt2800_rfcsr_read(rt2x00dev, 30, &rfcsr);
         rt2x00_set_field8(&rfcsr, RFCSR30_TX_H20M, 0);<------------
         rt2x00_set_field8(&rfcsr, RFCSR30_RX_H20M, 0);<------------
         rt2800_rfcsr_write(rt2x00dev, 30, rfcsr);

         rt2800_rfcsr_read(rt2x00dev, 3, &rfcsr);
         rt2x00_set_field8(&rfcsr, RFCSR30_RF_CALIBRATION, 1);
         rt2800_rfcsr_write(rt2x00dev, 3, rfcsr);
     }
 I've done correct{?) configs and ht40 works for my rt3290, rt3352 & rt5350.
 Or it's simple mistake and instead of 0 it must be conf_is_ht40(conf).

 ---
 serge

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---
serge

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