Marvell 8385 datasheet

[Cyril HAENEL]

Cyril HAENEL a écrit :
>
> Cyril HAENEL a écrit :
>> Hi,
>>
>> Anyone know where I can found the marvell 8385 chip datasheet ? I 
>> know it exists a command to enter the chip in standby mode, to have a 
>> very low current consumption.
>> I want to modify the libertas driver to send this command to the chip 
>> during the driver unloading.
>>
>> The goal is to save power on my board. Actually I power off the 
>> pcmcia socket but on my board I have not implemented buffers between 
>> the bus and the wifi card, and not implemented the ability to 
>> physically cut the power line of the wifi card.
>> Actually after I powered off the pcmcia socket (to properly unload 
>> the cs libertas driver), I force the wifi card reset line and it 
>> enters a relatively low consumption : 40mA.
>>
>> But now I want to do more and send the standby command during 
>> libertas driver unloading. Whis this command, I know that the wifi 
>> card should consume 5mA only...
>>
>> Regards,
>> Cyril HAENEL
>>
>>
> I answer to myself : I found again the file I was looking for....
> It's the marvell firmware version 5.1 specification...
> Full power down seem's to be activated by sending the 
> CMD_802_11_DEEP_SLEEP command (0x3E)
> The firmware doesn't answer to this command, thus I think it can be 
> pretty easy to send this command juste before the drivers exits.
>
I answer to myself again :

It works ! Now I send the CMD_802_11_DEEP_SLEEP command in the 
if_cs_detach() function (in if_cs.c).
The current consumption fall below 5mA, really good !

Regards

-- 

Cyril Haenel
Registered Linux User #332632