#10270 HIGH Not Tri: wlan goes missing during runin

Zarro Boogs per Child bugtracker at laptop.org
Wed Aug 4 01:19:50 EDT 2010

#10270: wlan goes missing during runin
           Reporter:  rsmith     |       Owner:  dsaxena      
               Type:  defect     |      Status:  new          
           Priority:  high       |   Milestone:  Not Triaged  
          Component:  kernel     |     Version:  not specified
         Resolution:             |    Keywords:  XO-1.5 WLAN  
        Next_action:  reproduce  |    Verified:  0            
Deployment_affected:             |   Blockedby:               
           Blocking:             |  
Changes (by wad):

  * keywords:  => XO-1.5 WLAN


 Regarding case 3:

 According to a confidential Marvell AN, we should be asserting RESET
 externally after powering up the WLAN card.

 The Linux driver should assert WLAN_RESETn low for between 1 and 20 uS,
 about 1 mS after turning on power to the card.   WLAN_RESETn is tied to
 GPIO0 on the VX855.

 I was under the impression that there was a cap on the reset line which
 obviated the need for this (as on the XO-1 WLAN module), but a search of
 the WLAN card schematics shows no such capacitor.

Ticket URL: <http://dev.laptop.org/ticket/10270#comment:4>
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