From: Vasily Khoruzhick <anarsoul@gmail.com>
To: Mark Brown <broonie@opensource.wolfsonmicro.com>
Cc: alsa-devel <alsa-devel@alsa-project.org>,
Philipp Zabel <philipp.zabel@gmail.com>,
Liam Girdwood <lrg@slimlogic.co.uk>
Subject: Re: [PATCH RFC 1/3] ASoC: uda1380: use callbacks instead of gpiolib
Date: Mon, 28 Jun 2010 17:25:25 +0300 [thread overview]
Message-ID: <201006281725.30673.anarsoul@gmail.com> (raw)
In-Reply-To: <20100628141539.GC7403@rakim.wolfsonmicro.main>
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В сообщении от 28 июня 2010 17:15:40 автор Mark Brown написал:
> What I'm trying to figure out is if the GPIO is wired directly to the
> UDA1380 or if this is controlling something external to the UDA1380
> which these designs just happen to have copied. If it's a direct
> connection to the UDA1380 then using GPIOs directly is perfectly
> sensible.
I'm not sure if s3c24xx GPIOs can drive UDA1380 directly. I suspect it's wired
to the gate of some transistor (FET - is it right term to use here? :)) to
handle higher current (sorry, English is not my native language, and it's hard
to explain schematic-specific things, that's not my field :)). Btw, I'm sure
that there's no any external power-control chip, maybe just single transistor.
Regards
Vasily
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next prev parent reply other threads:[~2010-06-28 14:25 UTC|newest]
Thread overview: 26+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-06-26 15:14 [PATCH RFC 0/3] asoc: uda1380 cleanup Vasily Khoruzhick
2010-06-26 15:14 ` [PATCH RFC 1/3] ASoC: uda1380: use callbacks instead of gpiolib Vasily Khoruzhick
2010-06-26 16:40 ` Mark Brown
2010-06-26 16:53 ` Vasily Khoruzhick
2010-06-26 20:09 ` Mark Brown
2010-06-26 20:53 ` Vasily Khoruzhick
2010-06-26 20:57 ` Mark Brown
2010-06-26 21:12 ` Vasily Khoruzhick
2010-06-27 10:21 ` Mark Brown
2010-06-28 12:00 ` Vasily Khoruzhick
2010-06-28 13:41 ` Mark Brown
2010-06-28 13:49 ` Vasily Khoruzhick
2010-06-28 13:50 ` Mark Brown
2010-06-28 14:05 ` Vasily Khoruzhick
2010-06-28 14:15 ` Mark Brown
2010-06-28 14:25 ` Vasily Khoruzhick [this message]
[not found] ` <AANLkTilfEIEBaHO8FupS9wU3FR3VGc_yUVNP8KPJ30jW@mail.gmail.com>
2010-06-28 14:32 ` Mark Brown
2010-06-26 15:14 ` [PATCH RFC 2/3] magician: pass .set_power callback to uda1380 pdata Vasily Khoruzhick
2010-06-26 15:14 ` [PATCH RFC 3/3] uda1380: make driver more powersave-friendly Vasily Khoruzhick
2010-06-26 20:45 ` Mark Brown
2010-06-26 21:07 ` Vasily Khoruzhick
2010-06-27 10:10 ` Mark Brown
2010-06-27 10:43 ` Vasily Khoruzhick
2010-06-27 20:55 ` Mark Brown
2010-06-27 21:15 ` Vasily Khoruzhick
2010-06-27 21:40 ` Mark Brown
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