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From: Linus Walleij <linus.walleij-QSEj5FYQhm4dnm+yROfE0A@public.gmane.org>
To: Sebastian Reichel <sre-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org>,
	Marc Zyngier <marc.zyngier-5wv7dgnIgG8@public.gmane.org>
Cc: Phil Reid
	<preid-qgqNFa1JUf/o2iN0hyhwsIdd74u8MsAO@public.gmane.org>,
	Rob Herring <robh+dt-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org>,
	Mark Rutland <mark.rutland-5wv7dgnIgG8@public.gmane.org>,
	linux-gpio-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
	"open list:OPEN FIRMWARE AND FLATTENED DEVICE TREE BINDINGS"
	<devicetree-u79uwXL29TY76Z2rM5mHXA@public.gmane.org>
Subject: Re: [PATCH v3 4/5] pinctrl: mcp23s08: configure irq polarity using irq data
Date: Thu, 30 Nov 2017 15:21:56 +0100	[thread overview]
Message-ID: <CACRpkdbkG_83-gpGqdMA5y3cpAvSbQ2X_xT07PC3+boxPeWbPQ@mail.gmail.com> (raw)
In-Reply-To: <20171121152142.zg3r57gl2kenjwgi@earth>

On Tue, Nov 21, 2017 at 4:21 PM, Sebastian Reichel <sre-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org> wrote:

> IMHO the explicit line-inverter is a bit over-engineered and
> implicit line-inverter is enough, but I'm fine with both solutions.
> I think the DT binding maintainers should comment on this though,
> since it's pretty much a core decision about interrupt specifiers.

I feel the same.

I am very much back and forth on the subject.

Simplicity of use vs modelling the system as it actually works.

Back and forth.

I honestly have just a very vague idea about this.

I don't know if Marc Z as irqchip maintainer has some idea
on how to model inverters on irq lines or if he's seen some
solutions to it out there.

Yours,
Linus Walleij
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  parent reply	other threads:[~2017-11-30 14:21 UTC|newest]

Thread overview: 21+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2017-11-21  8:21 [PATCH v3 0/5] pinctrl: mcp32s08: add open drain config for irq Phil Reid
     [not found] ` <1511252491-79952-1-git-send-email-preid-qgqNFa1JUf/o2iN0hyhwsIdd74u8MsAO@public.gmane.org>
2017-11-21  8:21   ` [PATCH v3 1/5] pinctrl: mcp23s08: remove hard coded irq polarity in irq_setup Phil Reid
2017-11-21 13:17     ` Sebastian Reichel
2017-11-21  8:21   ` [PATCH v3 3/5] pinctrl: mcp23s08: add open drain configuration for irq output Phil Reid
2017-11-21 12:57     ` Sebastian Reichel
2017-11-21  8:21   ` [PATCH v3 4/5] pinctrl: mcp23s08: configure irq polarity using irq data Phil Reid
2017-11-21 13:34     ` Sebastian Reichel
2017-11-21 14:46       ` Phil Reid
     [not found]         ` <c191a9d6-3ebb-e95b-7342-aa18598ddf2b-qgqNFa1JUf/o2iN0hyhwsIdd74u8MsAO@public.gmane.org>
2017-11-21 15:21           ` Sebastian Reichel
2017-11-21 15:38             ` Phil Reid
2017-11-21 16:04             ` Alexander Stein
2017-11-21 16:30               ` Sebastian Reichel
2017-11-30 14:21             ` Linus Walleij [this message]
2017-11-30 15:50               ` Marc Zyngier
2017-12-01  8:38                 ` Linus Walleij
2017-11-30 14:17     ` Linus Walleij
2017-11-21  8:21 ` [PATCH v3 2/5] dt-bindings: pinctrl: mcp23s08: add documentation for drive-open-drain Phil Reid
2017-11-21 12:56   ` Sebastian Reichel
     [not found]   ` <1511252491-79952-3-git-send-email-preid-qgqNFa1JUf/o2iN0hyhwsIdd74u8MsAO@public.gmane.org>
2017-11-21 18:37     ` Rob Herring
2017-11-21  8:21 ` [PATCH v3 5/5] dt-bindings: pinctrl: deprecate 'microchip,irq-active-high' property Phil Reid
2017-11-21 18:37   ` Rob Herring

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