From: "Eric Bénard" <eric@eukrea.com>
To: Tim Sander <tim.sander@hbm.com>
Cc: barebox@lists.infradead.org
Subject: Re: GPIO Support on pcm043
Date: Fri, 20 May 2011 15:34:01 +0200 [thread overview]
Message-ID: <4DD66DC9.1090304@eukrea.com> (raw)
In-Reply-To: <201105201530.20237.tim.sander@hbm.com>
On 20/05/2011 15:30, Tim Sander wrote:
> Hi Eric
>
> Thanks for your answer
>>> Is there some obvious error on my side or is there no gpio
>>> support for pcm043? At least there seems to be support for
>>> the gpio ports on imx?
>>> Any hints?
>>
>> you first need to configure the mux of the pins to GPIO mode, then you can
>> use them as gpio.
> After tripping into that trap multiple times, i've already checked that, but
> forgot to mention it:
> static struct pad_desc pcm043_pads[] = {
> ...
> MX35_PAD_D3_CLS__GPIO1_4,
> MX35_PAD_D3_SPL__GPIO1_5,
> ...
>
> These should be the gpio nrs 4 and 5 which means that
> gpio_set_direction 4 1
> or
> gpio_set_direction 4 0
> should light up the led.
>
if the led is wired on gpio1_5 it should.
Eric
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next prev parent reply other threads:[~2011-05-20 13:37 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-05-20 12:07 GPIO Support on pcm043 Tim Sander
2011-05-20 13:14 ` Eric Bénard
2011-05-20 13:30 ` Tim Sander
2011-05-20 13:34 ` Eric Bénard [this message]
2011-05-20 14:16 ` Eric Bénard
2011-05-23 7:12 ` Sascha Hauer
2011-05-23 10:20 ` Tim Sander
2011-05-23 7:06 ` Sascha Hauer
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