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From: Pavel Machek <pavel@ucw.cz>
To: Rob Herring <robh@kernel.org>
Cc: "Sebastian Reichel" <sre@kernel.org>,
	"Tony Lindgren" <tony@atomide.com>,
	"Mark Rutland" <mark.rutland@arm.com>,
	"Marcel Holtmann" <marcel@holtmann.org>,
	"Greg Kroah-Hartman" <gregkh@linuxfoundation.org>,
	"Jiri Slaby" <jslaby@suse.com>,
	"Ville Tervo" <ville.tervo@iki.fi>,
	"Filip Matijević" <filip.matijevic.pz@gmail.com>,
	"Aaro Koskinen" <aaro.koskinen@iki.fi>,
	"Pali Rohár" <pali.rohar@gmail.com>,
	"Ivaylo Dimitrov" <ivo.g.dimitrov.75@gmail.com>,
	linux-bluetooth@vger.kernel.org,
	"linux-serial@vger.kernel.org" <linux-serial@vger.kernel.org>,
	linux-omap <linux-omap@vger.kernel.org>,
	"devicetree@vger.kernel.org" <devicetree@vger.kernel.org>,
	"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>
Subject: Re: [RFC 3/7] dt: bindings: Add nokia-bluetooth
Date: Wed, 17 Aug 2016 17:54:52 +0200	[thread overview]
Message-ID: <20160817155452.GA14957@amd> (raw)
In-Reply-To: <CAL_JsqLcDzTZ++h+e7D-n0xbt7LgryK6jfGJDNEcAaU=Dn4b0w@mail.gmail.com>

Hi!

> >> > +  - reset-gpios:           Should specify the gpio for bluetooth reset
> >> > +  - host-wakeup-gpios:             Should specify the gpio for host wakeup
> >>
> >> Should be interrupt instead?
> >
> > Yes this is mostly an interrupt, but I need to read the current
> > line state.
> 
> When? If the interrupt is level triggered, then you can get the line
> state based on whether you get an interrupt or not. If this needs to
> be a wakeup source (see the wakeup source binding), then it needs to
> be an interrupt.

What is wrong with GPIO? It is simply a piece of wire. Yes, we'll
configure it to generate an interrupt, or maybe not, but that's
software detail, the device tree just should not care....
								Pavel
-- 
(english) http://www.livejournal.com/~pavelmachek
(cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html

WARNING: multiple messages have this Message-ID (diff)
From: Pavel Machek <pavel-+ZI9xUNit7I@public.gmane.org>
To: Rob Herring <robh-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org>
Cc: "Sebastian Reichel" <sre-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org>,
	"Tony Lindgren" <tony-4v6yS6AI5VpBDgjK7y7TUQ@public.gmane.org>,
	"Mark Rutland" <mark.rutland-5wv7dgnIgG8@public.gmane.org>,
	"Marcel Holtmann"
	<marcel-kz+m5ild9QBg9hUCZPvPmw@public.gmane.org>,
	"Greg Kroah-Hartman"
	<gregkh-hQyY1W1yCW8ekmWlsbkhG0B+6BGkLq7r@public.gmane.org>,
	"Jiri Slaby" <jslaby-IBi9RG/b67k@public.gmane.org>,
	"Ville Tervo" <ville.tervo-X3B1VOXEql0@public.gmane.org>,
	"Filip Matijević"
	<filip.matijevic.pz-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>,
	"Aaro Koskinen" <aaro.koskinen-X3B1VOXEql0@public.gmane.org>,
	"Pali Rohár" <pali.rohar-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>,
	"Ivaylo Dimitrov"
	<ivo.g.dimitrov.75-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>,
	linux-bluetooth-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
	"linux-serial-u79uwXL29TY76Z2rM5mHXA@public.gmane.org"
	<linux-serial-u79uwXL29TY76Z2rM5mHXA@public.gmane.org>,
	linux-omap <linux-omap-u79uwXL29TY76Z2rM5mHXA@public.gmane.org>,
	"devicetree-u79uwXL29TY76Z2rM5mHXA@public.gmane.org"
	<devicetree-u79uwXL29TY76Z2rM5mHXA@public.gmane.org>,
	"linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org"
	<linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org>
Subject: Re: [RFC 3/7] dt: bindings: Add nokia-bluetooth
Date: Wed, 17 Aug 2016 17:54:52 +0200	[thread overview]
Message-ID: <20160817155452.GA14957@amd> (raw)
In-Reply-To: <CAL_JsqLcDzTZ++h+e7D-n0xbt7LgryK6jfGJDNEcAaU=Dn4b0w-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>

Hi!

> >> > +  - reset-gpios:           Should specify the gpio for bluetooth reset
> >> > +  - host-wakeup-gpios:             Should specify the gpio for host wakeup
> >>
> >> Should be interrupt instead?
> >
> > Yes this is mostly an interrupt, but I need to read the current
> > line state.
> 
> When? If the interrupt is level triggered, then you can get the line
> state based on whether you get an interrupt or not. If this needs to
> be a wakeup source (see the wakeup source binding), then it needs to
> be an interrupt.

What is wrong with GPIO? It is simply a piece of wire. Yes, we'll
configure it to generate an interrupt, or maybe not, but that's
software detail, the device tree just should not care....
								Pavel
-- 
(english) http://www.livejournal.com/~pavelmachek
(cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html
--
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  reply	other threads:[~2016-08-17 15:54 UTC|newest]

Thread overview: 52+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2016-08-13  3:14 [RFC 0/7] Nokia N9xx bluetooth driver Sebastian Reichel
2016-08-13  3:14 ` [RFC 1/7] tty: serial: omap: add UPF_BOOT_AUTOCONF flag for DT init Sebastian Reichel
2016-08-14  8:49   ` Pavel Machek
2016-08-16  8:14     ` Sebastian Reichel
2016-08-16  8:14       ` Sebastian Reichel
2016-08-13  3:14 ` [RFC 2/7] tty: add support for "tty slave" devices Sebastian Reichel
2016-08-13 10:03   ` Greg Kroah-Hartman
2016-08-13 20:31     ` Sebastian Reichel
2016-08-14 11:36       ` Greg Kroah-Hartman
2016-08-14  8:48     ` Pavel Machek
2016-08-14 11:35       ` Greg Kroah-Hartman
2016-08-14 11:35         ` Greg Kroah-Hartman
2016-08-13  3:14 ` [RFC 3/7] dt: bindings: Add nokia-bluetooth Sebastian Reichel
2016-08-16 13:51   ` Rob Herring
2016-08-16 23:28     ` Sebastian Reichel
2016-08-17 13:11       ` Rob Herring
2016-08-17 13:11         ` Rob Herring
2016-08-17 15:54         ` Pavel Machek [this message]
2016-08-17 15:54           ` Pavel Machek
2016-08-13  3:14 ` [RFC 4/7] Bluetooth: hci_uart: Add support for word alignment Sebastian Reichel
2016-08-14  8:51   ` Pavel Machek
2016-08-14  8:51     ` Pavel Machek
2016-08-16  7:05   ` Marcel Holtmann
2016-08-16  7:51     ` Sebastian Reichel
2016-08-16  7:51       ` Sebastian Reichel
2016-08-13  3:14 ` [RFC 5/7] Bluetooth: hci_nokia: Introduce new driver Sebastian Reichel
2016-08-14 23:54   ` Paul Gortmaker
2016-08-14 23:54     ` Paul Gortmaker
2016-08-15  1:12     ` Sebastian Reichel
2016-08-15  1:12       ` Sebastian Reichel
2016-08-16  7:02   ` Marcel Holtmann
2016-08-16  7:52     ` Pali Rohár
2016-08-16  9:25       ` Sebastian Reichel
2016-08-16  9:09     ` Sebastian Reichel
2016-08-16  9:09       ` Sebastian Reichel
2016-08-16 10:23       ` Marcel Holtmann
2016-08-16 10:23         ` Marcel Holtmann
2016-08-16 20:05         ` Pavel Machek
2016-08-16 10:23       ` Marcel Holtmann
2016-08-16 10:23         ` Marcel Holtmann
2016-08-16  8:10   ` Marcel Holtmann
2016-08-16  8:10     ` Marcel Holtmann
2016-08-16  9:35     ` Sebastian Reichel
2016-08-13  3:14 ` [RFC 6/7] ARM: dts: OMAP3-N900: Add bluetooth Sebastian Reichel
2016-08-14  8:53   ` Pavel Machek
2016-08-13  3:14 ` [RFC 7/7] ARM: dts: OMAP3-N950: " Sebastian Reichel
2016-08-13  3:14   ` Sebastian Reichel
2016-08-14  8:53   ` Pavel Machek
2016-08-16  7:10 ` [RFC 0/7] Nokia N9xx bluetooth driver Marcel Holtmann
2016-08-16  7:10   ` Marcel Holtmann
2016-08-16 20:22   ` Rob Herring
2016-08-16 20:22     ` Rob Herring

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