linux-kernel - Re: [PATCH 1/1] spi: intel_mid_ssp_spi: new SPI driver for intel Medfield platform

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Date:	Thu, 3 Feb 2011 15:06:24 +0000
From:	Mark Brown <broonie@...nsource.wolfsonmicro.com>
To:	Alan Cox <alan@...rguk.ukuu.org.uk>
Cc:	Russ Gorby <russ.gorby@...el.com>,
	David Brownell <dbrownell@...rs.sourceforge.net>,
	Grant Likely <grant.likely@...retlab.ca>,
	"open list:SPI SUBSYSTEM" <spi-devel-general@...ts.sourceforge.net>,
	open list <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH 1/1] spi: intel_mid_ssp_spi: new SPI driver for intel
	Medfield platform

On Thu, Feb 03, 2011 at 03:04:32PM +0000, Alan Cox wrote:
> Mark Brown <broonie@...nsource.wolfsonmicro.com> wrote:

> > I've got the same question here as I had with Russ' patch: it looks like
> > there's some overlap with the SSP ports used for audio (it's just a
> > generic programmable serial port so even if it's not normally used for
> > audio that's a possiblity), how is that handled?

> The SSP has PCI configuration indicating how it is being assigned, which
> is in vendor capability byte 6. The low 3 bits indicte the mode, where
> mode 1 is an SPI master/slave, and in that case bit 6 is set for a slave.

OK, cool - just checking as it's a common issue for these generic serial
ports.
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