On Friday, September 9, 2016 at 1:06:21 PM UTC-7, Stephane Charette wrote: > > When I first plug power into my BBGW, everything works great. But if I > issue a "reboot" or "shutdown -r now" command, when the device boots back > up I have no wifi. >
This morning, TI finally replied to me on their forum in regards to this ongoing wifi problem. While I understand the meaning in the message, I don't have the skills to know what to do with this information. Here is what they had to say: I believe we have found the root cause for the BBGW wifi related issues. Bottom line is that BT_AUD_OUT from wl1835 has to be pulled low when WL_EN is activated. in case it isn't, wilink8 ends up in one of the test modes that introduces various issues (elp wakeup timeouts etc.) On the BBGW this pin is routed through the level shifter (U21) that introduces a pullup on the line and wilink8 ends up in a bad state. To work around this, I have used a gpio hog to force this pin low. An alternative may be adding an external pulldown on U21 pin 4 but this would require an ECO. Please see section 10.4 in the following document: http://www.ti.com/lit/ug/swru437/swru437.pdf You can see that AUD_OUT_BT has to be 0 when BT or WLAN enable bit is set to high. BR, Eyal Stéphane -- For more options, visit http://beagleboard.org/discuss --- You received this message because you are subscribed to the Google Groups "BeagleBoard" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To view this discussion on the web visit https://groups.google.com/d/msgid/beagleboard/d19a8a29-f559-4cdd-ac09-3187eafa1f78%40googlegroups.com. For more options, visit https://groups.google.com/d/optout.
