Re: [Qemu-devel] [RFC PATCH v1 1/4] SPI: initial support

[Paul Brook]

> 2012/4/3 Paul Brook <address@hidden>:
> >> > I'm no SPI expert, but a bit of googling suggests that it's
> >> > a synchronous duplex bus, so you always send a byte of data
> >> > to the slave and get one back in return (even if for some slaves
> >> > it might be random garbage).
> > 
> > Waitaminute. So this is just basic synchronous serial?
> > 
> > We already have an API for this. hw/spi.c.
> 
> Er, no we don't, not in upstream QEMU. You'll notice that
> the patch we're discussing creates hw/spi.c as a new file...

Sorry, I mean hw/ssi.c

Synchronous serial is something that pretty much every vendor has their own 
name for, but in practice they're actually all the same.

Paul