linux-kernel - Re: [PATCH RFC 00/10] Generic Device Tree based power domain look-up

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Date:	Sat, 11 Jan 2014 20:52:17 +0100
From:	Tomasz Figa <tomasz.figa@...il.com>
To:	linux-pm@...r.kernel.org
Cc:	linux-kernel@...r.kernel.org, linux-samsung-soc@...r.kernel.org,
	linux-arm-kernel@...ts.infradead.org, devicetree@...r.kernel.org,
	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	"Rafael J. Wysocki" <rjw@...ysocki.net>,
	Pavel Machek <pavel@....cz>, Len Brown <len.brown@...el.com>,
	Russell King <linux@....linux.org.uk>,
	Kukjin Kim <kgene.kim@...sung.com>,
	Kumar Gala <galak@...eaurora.org>,
	Ian Campbell <ijc+devicetree@...lion.org.uk>,
	Mark Rutland <mark.rutland@....com>,
	Pawel Moll <pawel.moll@....com>,
	Rob Herring <robh+dt@...nel.org>,
	Bartlomiej Zolnierkiewicz <b.zolnierkie@...sung.com>,
	Stephen Warren <swarren@...dotorg.org>,
	Tomasz Figa <t.figa@...sung.com>
Subject: Re: [PATCH RFC 00/10] Generic Device Tree based power domain look-up

On Saturday 11 of January 2014 20:42:42 Tomasz Figa wrote:
> Up till now there was no single generic method to bind devices to their
> power domains using Device Tree. Each platform has been doing this using
> its own way, example of which are Exynos power domain bindings [1] and
> look-up code [2].
> 
> This series is intended to change this and provide generic DT bindings for
> power domain specification and generic code performing look-up of power
> domains and binding them to devices.
> 
> Patches 1, 2, 3 are not directly related to this series, but they are
> dependencies of further patches making mach-s3c64xx a user of introduced
> code. Patch 4 is the most important part of this series, as it's the one
> introducing $subject. Further patches are fixing and adding two users,
> mach-exynos (removing the legacy code) and mach-s3c64xx (no DT support for
> power domains before). Last two patches are adding display support for
> Mini6410 board, including a node for display controller (FIMD) which is
> a power domain consumer.
> 
> Successfully tested on S3C6410-based Mini6410 board.
> 

I left the references for the end of this cover letter and finally forgot
about them. Please accept my apologies ;).

[1] Documentation/devicetree/bindings/arm/exynos/power_domain.txt
[2] arch/arm/mach-exynos/pm_domains.c

Also it might be good to mention that I was heavily inspired by
implementation of clock providers in Common Clock Framework in case of
provider registration and look-up and also by my Exynos power domain
implementation (now removed by this series ;)) in case of code binding
devices to power domains.

Best regards,
Tomasz

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