linux-kernel - Re: [PATCH v4 00/13] Add ACPI _DSD and unified device properties support

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Message-ID: <7ce75234f8b2dd8bcc747f296f626487.squirrel@twosheds.infradead.org>
Date:	Wed, 15 Oct 2014 15:11:18 -0000
From:	"David Woodhouse" <dwmw2@...radead.org>
To:	"Darren Hart" <dvhart@...ux.intel.com>
Cc:	"David Woodhouse" <dwmw2@...radead.org>,
	"Mark Rutland" <mark.rutland@....com>,
	"Rafael J. Wysocki" <rjw@...ysocki.net>,
	"Linux Kernel Mailing List" <linux-kernel@...r.kernel.org>,
	"Greg Kroah-Hartman" <gregkh@...uxfoundation.org>,
	"Mika Westerberg" <mika.westerberg@...ux.intel.com>,
	"ACPI Devel Maling List" <linux-acpi@...r.kernel.org>,
	"Aaron Lu" <aaron.lu@...el.com>,
	"devicetree@...r.kernel.org" <devicetree@...r.kernel.org>,
	"Linus Walleij" <linus.walleij@...aro.org>,
	"Alexandre Courbot" <gnurou@...il.com>,
	"Dmitry Torokhov" <dmitry.torokhov@...il.com>,
	"Bryan Wu" <cooloney@...il.com>,
	"grant.likely@...aro.org" <grant.likely@...aro.org>,
	"Arnd Bergmann" <arnd@...db.de>, dvhart@...radead.org
Subject: Re: [PATCH v4 00/13] Add ACPI _DSD and unified device properties
 support


> My comment was going to be along the same lines. It is an optional
> parameter, which is what I would expect for a firmware-specific type of
> property.

Right. Fundamentally, device properties (in DT or ACPI) exist to describe
the hardware in a generic and abstract fashion. It's a slippery slope from
saying "you don't need this property because you know you whether you are
on the *foo* architecture", to saying "you don't this property because you
know whether you're on a Assabet or not." I think it's wrong to go down
that path.

-- 
dwmw2

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