linux-kernel - Re: [PATCH 0/6] Marvell Orion SoC irqchip and clocksource

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Date:	Tue, 11 Jun 2013 09:35:23 -0300
From:	Ezequiel Garcia <ezequiel.garcia@...e-electrons.com>
To:	Sebastian Hesselbarth <sebastian.hesselbarth@...il.com>
Cc:	Grant Likely <grant.likely@...aro.org>,
	Rob Herring <rob.herring@...xeda.com>,
	Rob Landley <rob@...dley.net>,
	Thomas Gleixner <tglx@...utronix.de>,
	John Stultz <john.stultz@...aro.org>,
	Russell King <linux@....linux.org.uk>,
	Jason Cooper <jason@...edaemon.net>,
	Andrew Lunn <andrew@...n.ch>,
	Thomas Petazzoni <thomas.petazzoni@...e-electrons.com>,
	Gregory Clement <gregory.clement@...e-electrons.com>,
	devicetree-discuss@...ts.ozlabs.org, linux-doc@...r.kernel.org,
	linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH 0/6] Marvell Orion SoC irqchip and clocksource

Hi Sebastian,

On Thu, Jun 06, 2013 at 06:27:08PM +0200, Sebastian Hesselbarth wrote:
> This patch set introduces DT-aware irqchip and clocksource drivers for
> Marvell Orion SoCs (Kirkwood, Dove, Orion5x, MV78x00) and corresponding
> patches for Dove and Kirkwood to enable them for DT-boards.
> 
> The irqchip driver, of course, depends on Thomas Gleixner's work on
> irqdomain support for generic chip (tip irq/core).
> 
> The ARM part of this patch set has a quite ridiculuous dependency havoc
> of mv643xx_eth DT support (current net-next) that will add to both irqchip
> and clocksource branches respectively. Therefore, I suggest that irq
> and clocksource maintainers take in the mere drivers (Patches 1+2) and
> Jason Cooper handles the remaining patches when all three drivers have
> surfaced on mainline linux.
> 
> I prepared a branch for anyone to test on Kirkwood and Dove which takes
> care of the above dependencies based on v3.10-rc4 plus tip irq/core,
> net-next, and arm-soc for-next (I know it is unstable but contains latest
> mvebu related patches already). When Thomas, John, and Jason agree the
> dependencies will vanish and only Jason has to take care of ARM patches
> for enabling DT-based mv643xx_eth, irqchip, and clocksource.
> 
> The branch can be found at
> 
> git://github.com/shesselba/linux-dove.git orion-irqchip-for-v3.11
> 
> and has been tested on Dove/CuBox and compile tested for Kirkwood.
> 
> Sebastian Hesselbarth (6):
>   irqchip: add support for Marvell Orion SoCs
>   clocksource: add Marvell Orion SoC timer
>   ARM: dove: move device tree nodes to DT irqchip and clocksource
>   ARM: kirkwood: move device tree nodes to DT irqchip and clocksource
>   ARM: dove: convert to DT irqchip and clocksource
>   ARM: kirkwood: convert to DT irqchip and clocksource
> 

I've done some tests on my Kirkwood Openblocks A6 using the latest
branch orion-irqchip-for-v3.11-v4. Everything works fine so:

Tested-by: Ezequiel Garcia <ezequiel.garcia@...e-electrons.com>

For patches 3 to 6 I'm wondering if there's any reason why the irqchip and
clocksource changes are not separated. I'm probably being too picky but,
unless you have a good reason for having them together,
I think they should go separated, i.e. patches for irqchip on one side,
and patches for clocksource on the other.

Aside from that, the series looks good. Nice job!

Thanks,
-- 
Ezequiel García, Free Electrons
Embedded Linux, Kernel and Android Engineering
http://free-electrons.com
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