linux-kernel - RE: [PATCH v5 4/4] ARM: dts: Add Ethernet chip to SMDK5410

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Date:	Thu, 05 Nov 2015 14:36:36 +0300
From:	Pavel Fedin <p.fedin@...sung.com>
To:	'Krzysztof Kozlowski' <k.kozlowski@...sung.com>,
	devicetree@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
	linux-samsung-soc@...r.kernel.org, linux-kernel@...r.kernel.org
Cc:	k.kozlowski.k@...il.com, 'Rob Herring' <robh+dt@...nel.org>,
	'Pawel Moll' <pawel.moll@....com>,
	'Mark Rutland' <mark.rutland@....com>,
	'Ian Campbell' <ijc+devicetree@...lion.org.uk>,
	'Kumar Gala' <galak@...eaurora.org>,
	'Kukjin Kim' <kgene@...nel.org>
Subject: RE: [PATCH v5 4/4] ARM: dts: Add Ethernet chip to SMDK5410

 Hello!

> >>> +	ethernet@3 {
> >>> +		compatible = "smsc,lan9115";
> >>> +		reg = <3 0 0x10000>;
> >>> +		phy-mode = "mii";
> >>> +		interrupt-parent = <&gpx0>;
> >>> +		interrupts = <5 8>;
> >>
> >> s/8/IRQ_TYPE_LEVEL_LOW/
> >> (is this really level low interrupt?)
> >
> >  Yes, according to: https://github.com/AndreiLux/Perseus-S3/blob/master/arch/arm/mach-
> exynos/mach-smdk5250.c#L133
> 
> Although this is different board, but okay.

 I am curious too, so i examined SMSC datasheet. The IRQ is fully programmable on
chip's side too, and our driver indeed defaults to active-low. You can switch it
to active-high by addint smsc,irq-active-high property. But i just copied
settings from those old Android kernels, and it just works.
 So, cleaning up and posting v6.

Kind regards,
Pavel Fedin
Expert Engineer
Samsung Electronics Research center Russia


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