linux-kernel - Re: [PATCH 3/4] spi: Add OF binding support for SPI busses

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Message-ID: <Pine.LNX.4.64.0805191446530.27140@axis700.grange>
Date:	Mon, 19 May 2008 15:17:22 +0200 (CEST)
From:	Guennadi Liakhovetski <g.liakhovetski@....de>
To:	Grant Likely <grant.likely@...retlab.ca>
cc:	linuxppc-dev@...abs.org, spi-devel-general@...ts.sourceforge.net,
	linux-kernel@...r.kernel.org, dbrownell@...rs.sourceforge.net,
	fabrizio.garetto@...il.com, jonsmirl@...il.com
Subject: Re: [PATCH 3/4] spi: Add OF binding support for SPI busses

On Fri, 16 May 2008, Grant Likely wrote:

> +    However, the binding does not attempt to define the specific method for
> +    assigning chip select numbers.  Since SPI chip select configuration is
> +    flexible and non-standardized, it is left out of this binding with the
> +    assumption that board specific platform code will be used to manage
> +    chip selects.  Individual drivers can define additional properties to
> +    support describing the chip select layout.

Yes, this looks like a problem to me. This means, SPI devices will need 
two bindings - OF and platform?... Maybe define an spi_chipselect 
OF-binding?

Thanks
Guennadi
---
Guennadi Liakhovetski
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