linux-kernel - Re: [PATCH 1/7] gpiolib: gpiolib-of: Implement device tree gpio-names based lookup

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite for Android: free password hash cracker in your pocket

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Date:	Wed, 16 Apr 2014 15:12:26 +0900
From:	Alexandre Courbot <gnurou@...il.com>
To:	Maxime Ripard <maxime.ripard@...e-electrons.com>
Cc:	Chen-Yu Tsai <wens@...e.org>,
	Linus Walleij <linus.walleij@...aro.org>,
	Johannes Berg <johannes@...solutions.net>,
	"John W. Linville" <linville@...driver.com>,
	Arnd Bergmann <arnd@...db.de>,
	Heikki Krogerus <heikki.krogerus@...ux.intel.com>,
	Mika Westerberg <mika.westerberg@...ux.intel.com>,
	Stephen Warren <swarren@...dotorg.org>,
	"linux-gpio@...r.kernel.org" <linux-gpio@...r.kernel.org>,
	linux-wireless <linux-wireless@...r.kernel.org>,
	netdev <netdev@...r.kernel.org>,
	"linux-arm-kernel@...ts.infradead.org" 
	<linux-arm-kernel@...ts.infradead.org>,
	"devicetree@...r.kernel.org" <devicetree@...r.kernel.org>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	linux-sunxi <linux-sunxi@...glegroups.com>
Subject: Re: [PATCH 1/7] gpiolib: gpiolib-of: Implement device tree gpio-names
 based lookup

On Tue, Apr 15, 2014 at 11:20 PM, Maxime Ripard
<maxime.ripard@...e-electrons.com> wrote:
> Hi Chen-Yu,
>
> On Tue, Apr 15, 2014 at 02:41:35PM +0800, Chen-Yu Tsai wrote:
>> This patch provides of_get_gpiod_flags_by_name(), which looks up GPIO
>> phandles by name only, through gpios/gpio-names, and not by index.
>
> IIRC, gpios only uses the *-gpios properties, and not gpios/gpio-names
> pattern seen on various other things.
>
> Is it some new property you introduce? If so, please add it to the
> documentation.
>
> Now, I'm not sure that having two distinct representations of GPIOs in
> the DT is a good thing. Yes, it's looking odd compared to other
> similar bindings, but it's what we have to deal with.

Mmmm I *think* I somehow remember a discussion about this topic
recently, but I cannot find it. Maybe Chen-yu could point us to the
conclusion of this discussion and the rationale for (re)implementing
named GPIOs this way?
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/