linux-kernel - Re: [PATCH RESEND v3 0/3] irqchip: vf610-mscm: add support for MSCM interrupt router

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Date:	Mon, 26 Jan 2015 11:16:45 +0100 (CET)
From:	Thomas Gleixner <tglx@...utronix.de>
To:	Stefan Agner <stefan@...er.ch>
cc:	jason@...edaemon.net, marc.zyngier@....com,
	u.kleine-koenig@...gutronix.de, shawn.guo@...aro.org,
	kernel@...gutronix.de, arnd@...db.de, robh+dt@...nel.org,
	pawel.moll@....com, mark.rutland@....com,
	ijc+devicetree@...lion.org.uk, galak@...eaurora.org,
	linux@....linux.org.uk, devicetree@...r.kernel.org,
	linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH RESEND v3 0/3] irqchip: vf610-mscm: add support for MSCM
 interrupt router

On Thu, 15 Jan 2015, Stefan Agner wrote:

> Splitted out version of the MSCM driver. My first driver based on the
> routeable domain support and was part of the Vybrid Cortex-M4 support
> patchset.
> 
> So far the MSCM interrupt router was initialized by the boot loader
> and configured all interrupts for the Cortex-A5 CPU. There are two
> use cases where a proper driver is necessary:
> - To run Linux on the Cortex-M4. When the kernel is running on the
>   non-preconfigured CPU, the interrupt router need to be configured
>   properly.
> - To support deeper sleep modes: LPSTOP clears the interrupt router
>   configuration, hence a driver needs to restore the configuration
>   on resume.
> I created a seperate patchset for that driver which hopefully makes
> it easier to get it into mergeable state.
> 
> Since I identified some registers likely to be used by other drivers
> (e.g. CPU ID or the CPU Generate Interrupt Register) I also added
> the "syscon" compatible string to make the registers available for
> other drivers in case needed.
> 
> This resend version of this patchset is rebased on v3.19-rc4.

Has the discussion with Marc on the original V3 set been resolved?

What about the DT bindings? I'm relucant to pick that up w/o acks from
the DT folks.

Thanks,

	tglx
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