linux-kernel - Re: [PATCH v6 8/8] mfd: Add support for Intel Sunrisepoint LPSS devices

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Message-ID: <5162784.iHqgML8p9o@vostro.rjw.lan>
Date:	Thu, 30 Jul 2015 01:30:48 +0200
From:	"Rafael J. Wysocki" <rjw@...ysocki.net>
To:	Michael Turquette <mturquette@...libre.com>
Cc:	Andy Shevchenko <andriy.shevchenko@...ux.intel.com>,
	linux-acpi@...r.kernel.org, linux-pm@...r.kernel.org,
	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	Vinod Koul <vinod.koul@...el.com>,
	Lee Jones <lee.jones@...aro.org>,
	Mika Westerberg <mika.westerberg@...ux.intel.com>,
	linux-kernel@...r.kernel.org, dmaengine@...r.kernel.org,
	Heikki Krogerus <heikki.krogerus@...ux.intel.com>,
	Jarkko Nikula <jarkko.nikula@...ux.intel.com>,
	"Wysocki, Rafael J" <rafael.j.wysocki@...el.com>,
	sboyd@...eaurora.org
Subject: Re: [PATCH v6 8/8] mfd: Add support for Intel Sunrisepoint LPSS devices

On Wednesday, July 29, 2015 03:44:34 PM Michael Turquette wrote:
> Hi Andy,

[cut]

> Do ACPI tables encode any meaningful data about clock signals? I gave
> some advice on this topic a couple of years ago to folks hacking on ACPI
> stuff in Linux, but I haven't kept up with the topic.
> 
> By comparison, most ARM-based platforms use Devicetree to link up a
> clock provider to a clock consumer. I do not think similar
> infrastructure exists yet for ACPI-based designs, but I wonder if the
> clock data exists in newer ACPI tables to at least make it possible?

No, it doesn't.

Thanks,
Rafael

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