linux-kernel - Re: [PATCH 05/11] spi/pxa2xx: make clock rate configurable from platform data

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Message-ID: <20130110135852.GS13897@intel.com>
Date:	Thu, 10 Jan 2013 15:58:52 +0200
From:	Mika Westerberg <mika.westerberg@...ux.intel.com>
To:	Mark Brown <broonie@...nsource.wolfsonmicro.com>
Cc:	"Rafael J. Wysocki" <rjw@...k.pl>, linux-kernel@...r.kernel.org,
	grant.likely@...retlab.ca, linus.walleij@...aro.org,
	eric.y.miao@...il.com, linux@....linux.org.uk,
	haojian.zhuang@...il.com, chao.bi@...el.com,
	"H. Peter Anvin" <hpa@...ux.intel.com>
Subject: Re: [PATCH 05/11] spi/pxa2xx: make clock rate configurable from
 platform data

On Thu, Jan 10, 2013 at 01:33:19PM +0000, Mark Brown wrote:
> On Thu, Jan 10, 2013 at 02:18:08PM +0100, Rafael J. Wysocki wrote:
> > On Thursday, January 10, 2013 12:51:59 PM Mark Brown wrote:
> 
> > > Sounds sensible, yes - about what I'd expect.  Is it possible to match
> > > on CPUID or similar information (given that this is all in the SoC)
> > > instead of ACPI, that might be more robust I guess?
> 
> > This particular part may be present in different SoCs.
> 
> Right, but I'd expect you could enumerate the SoCs?  Someone might
> decide to change the clock configuration for future SoCs anyway.

Well, they can use the same LPSS block with a different CPU but then we
expect the ACPI IDs to change as well (so we can then make another set of
clocks for those).
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