linux-kernel - Re: [PATCH] gpio: New driver for GPO emulation using PWM generators

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: Windows password security audit tool. GUI, reports in PDF.

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

Date:	Mon, 26 Nov 2012 12:36:35 +0100
From:	Peter Ujfalusi <peter.ujfalusi@...com>
To:	Lars-Peter Clausen <lars@...afoo.de>
CC:	Grant Likely <grant.likely@...retlab.ca>,
	Linus Walleij <linus.walleij@...aro.org>,
	Rob Landley <rob@...dley.net>,
	<devicetree-discuss@...ts.ozlabs.org>, <linux-doc@...r.kernel.org>,
	<linux-kernel@...r.kernel.org>,
	Mark Brown <broonie@...nsource.wolfsonmicro.com>,
	<linux-omap@...r.kernel.org>
Subject: Re: [PATCH] gpio: New driver for GPO emulation using PWM generators

hi,

On 11/26/2012 11:30 AM, Lars-Peter Clausen wrote:
> The difference here is that the LED, backlight, etc are all different
> physical devices begin driven by the pwm pin, so it makes sense to have a
> device tree node for them, while using the pwm as gpio is just a different
> function of the same physical pin.  So in a sense the pwm controller also
> becomes a gpio controller. I like the idea of the pwm core automatically
> instantiating a pwm-gpo device if it sees a gpio-controller property in the
> pwm device devicetree node.

OK, fair enough. I will go with the plan I described in the first mail for the
GPIO use of PWM.

-- 
Péter
--
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/