Re: MMC Driver RFC

[Ian Molton <spyro@f2s.com>]

Pierre Ossman wrote:
> Ian Molton wrote:

> Afraid everything gets routed to the same account in the end anyway. I 
> checked the logs and the problem is that your mail server has a HELO 
> that differs from its IP

I've sent mail to my ISP re that. cheers.

> I've had the same idea. But I think it will be difficult since we need 
> som funky logic during init. Perhaps a model where each mode 
> (MMC/SD/SDIO) each gets their turn trying to find something on the bus.

Might be worth the effort. I'll need to think on it.

> But this would require a rather large rewrite of the MMC layer.

Im not sure it'd be so catastrophic.

>> Mind you, I have plans to look at SDIO, so that may alter things...
>>
> I need it to determine if the code should send an RCA or ask for one, 
> and to determine if it should try and read the SCR. Your solution used 
> an extra parameter but I thought a mode flag would be better since we 
> might need to know mode later on (after init.).

Fair enough.

>> The toshiba controller appears to want to be told when an ACMD is 
>> issued, compared to a normal CMD.
> 
> No hints in the spec about why?

What spec? ;-)

 > Seems very strange since there's no change in what goes over the wire.

I think the controller (for some odd reason) keeps some extra internal 
state.