USB Host on 8271 (A cry for help)

USB Host on 8271 (A cry for help)

[Pantelis Antoniou]

Hi there

I'm trying to get USB host mode to work on 8271 and I'm
stumped.

The major problem is that automatic SOF generation as mentioned
in the manual appears to not work (or it's not clear how to
enable it).

I'm trying to port the 8xx based driver, which works
adequately after applying the microcode patch.

Sadly usb host mode on 82xx appears to suck even more.

If anyone has *any* code that works for host mode on 82xx please
contact me.

Regards

Pantelis

Re: USB Host on 8271 (A cry for help)

[Pantelis Antoniou]

Pantelis Antoniou wrote:
> Hi there
> 
> I'm trying to get USB host mode to work on 8271 and I'm
> stumped.
> 
> The major problem is that automatic SOF generation as mentioned
> in the manual appears to not work (or it's not clear how to
> enable it).
> 
> I'm trying to port the 8xx based driver, which works
> adequately after applying the microcode patch.
> 
> Sadly usb host mode on 82xx appears to suck even more.
> 
> If anyone has *any* code that works for host mode on 82xx please
> contact me.
> 
> Regards
> 
> Pantelis
> 
> _______________________________________________
> Linuxppc-embedded mailing list
> Linuxppc-embedded@ozlabs.org
> https://ozlabs.org/mailman/listinfo/linuxppc-embedded
> 
> 

Found it.

Now it works. RCCR[EIE] must be set.

But is this mentioned anywhere in the USB chapter of the manual?

NO! That would be too easy.

Regards

Pantelis.

PS. Please, would someone from freescale include this fine
point in the manual?

Thank you.

Re: USB Host on 8271 (A cry for help)

[Kumar Gala]

> PS. Please, would someone from freescale include this fine
>  point in the manual?

forwarded this on to one of our docs people, we will see what happens.

- kumar