From: "Albrecht Dreß" <albrecht.dress@arcor.de>
To: linux-embedded@vger.kernel.org
Subject: Re: [PATCH 0/6] Generic PWM API implementation
Date: Mon, 23 Nov 2009 21:51:26 +0100 [thread overview]
Message-ID: <1259009486.2170.4@antares> (raw)
In-Reply-To: <fa686aa40911230939q3c65c681jee8c4098331f70ee@mail.gmail.com> (from grant.likely@secretlab.ca on Mon Nov 23 18:39:22 2009)
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Am 23.11.09 18:39 schrieb(en) Grant Likely:
> There is no overlap here (except for the degenerate case of using a PWM as an output only GPIO... which is useful. Board designers do crazy things).
But there may be cases where a device pin is used as GPIO *and* as pwm output. Think of a relay output driver which may be used a state GPIO to indicate that the device is up, or as a pulsed heartbeat output (some safety schemes require that) for the
same purpose, selected by a run-time (not device tree!) config option.
I actually do exactly this with one of the Freescale 5200's pins, and would therefore also appreciate a "unified" approach.
Cheers, Albrecht.
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next prev parent reply other threads:[~2009-11-23 20:51 UTC|newest]
Thread overview: 41+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-10-15 18:14 [PATCH 0/6] Generic PWM API implementation Bill Gatliff
2008-10-15 18:14 ` [PATCH 1/6] [PWM] " Bill Gatliff
2008-10-17 15:59 ` Mike Frysinger
2008-11-04 20:16 ` Bill Gatliff
2008-11-04 20:51 ` Mike Frysinger
2008-11-04 23:55 ` David Brownell
2008-11-05 0:17 ` Mike Frysinger
2008-11-05 2:59 ` Bill Gatliff
2008-11-05 5:08 ` David Brownell
2008-11-05 2:56 ` Bill Gatliff
2008-10-15 18:14 ` [PATCH 2/6] [PWM] Changes to existing include/linux/pwm.h to adapt to generic PWM API Bill Gatliff
2008-10-15 18:14 ` [PATCH 3/6] [PWM] Documentation Bill Gatliff
2008-10-15 18:14 ` [PATCH 4/6] [PWM] Driver for Atmel PWMC peripheral Bill Gatliff
2008-10-15 18:14 ` [PATCH 5/6] [PWM] Install new Atmel PWMC driver in Kconfig, expunge old one Bill Gatliff
2008-10-15 18:14 ` [PATCH 6/6] [PWM] New LED driver and trigger that use PWM API Bill Gatliff
2009-11-13 19:08 ` [PATCH 0/6] Generic PWM API implementation Grant Likely
2009-11-14 4:22 ` Mike Frysinger
2009-11-14 7:55 ` Grant Likely
2009-11-17 7:47 ` David Brownell
2009-11-17 15:48 ` Bill Gatliff
2009-11-17 16:53 ` David Brownell
2009-11-20 22:51 ` Grant Likely
2009-11-20 22:14 ` Grant Likely
2009-11-23 14:12 ` Bill Gatliff
2009-11-23 17:39 ` Grant Likely
2009-11-23 20:51 ` Albrecht Dreß [this message]
2009-11-28 21:38 ` David Brownell
2009-11-28 21:59 ` David Brownell
2009-11-17 15:45 ` Bill Gatliff
2009-11-17 8:27 ` David Brownell
2009-11-17 15:54 ` Bill Gatliff
2009-11-20 22:21 ` Grant Likely
2009-11-23 14:13 ` Bill Gatliff
2009-11-23 17:40 ` Grant Likely
2009-11-23 15:29 ` Mark Brown
2009-11-23 17:44 ` Grant Likely
2009-11-23 18:09 ` Mark Brown
2009-11-28 21:54 ` David Brownell
2009-11-17 15:39 ` Bill Gatliff
2009-11-20 22:49 ` Grant Likely
2009-11-28 21:28 ` David Brownell
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