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Re: [Qemu-devel] [RFC PATCH v1 1/4] SPI: initial support
From: |
Paul Brook |
Subject: |
Re: [Qemu-devel] [RFC PATCH v1 1/4] SPI: initial support |
Date: |
Tue, 3 Apr 2012 22:22:21 +0100 |
User-agent: |
KMail/1.13.7 (Linux/3.0.0-2-amd64; KDE/4.6.5; x86_64; ; ) |
> 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
- Re: [Qemu-devel] [RFC PATCH v1 1/4] SPI: initial support, Peter Maydell, 2012/04/02
- Re: [Qemu-devel] [RFC PATCH v1 1/4] SPI: initial support, Peter Crosthwaite, 2012/04/02
- Re: [Qemu-devel] [RFC PATCH v1 1/4] SPI: initial support, Peter Crosthwaite, 2012/04/02
- Re: [Qemu-devel] [RFC PATCH v1 1/4] SPI: initial support, Paul Brook, 2012/04/03
- Re: [Qemu-devel] [RFC PATCH v1 1/4] SPI: initial support, Peter Maydell, 2012/04/03
- Re: [Qemu-devel] [RFC PATCH v1 1/4] SPI: initial support,
Paul Brook <=
- Re: [Qemu-devel] [RFC PATCH v1 1/4] SPI: initial support, Peter Crosthwaite, 2012/04/03
- Re: [Qemu-devel] [RFC PATCH v1 1/4] SPI: initial support, Paul Brook, 2012/04/04
- Re: [Qemu-devel] [RFC PATCH v1 1/4] SPI: initial support, Peter Crosthwaite, 2012/04/04
- Re: [Qemu-devel] [RFC PATCH v1 1/4] SPI: initial support, Peter Maydell, 2012/04/05
- Re: [Qemu-devel] [RFC PATCH v1 1/4] SPI: initial support, Peter Crosthwaite, 2012/04/06
Re: [Qemu-devel] [RFC PATCH v1 1/4] SPI: initial support, Peter Crosthwaite, 2012/04/02