From: Sascha Hauer <s.hauer@pengutronix.de>
To: Ivor Kruger <ivor@veriline.co.za>
Cc: "barebox@lists.infradead.org" <barebox@lists.infradead.org>
Subject: Re: GPIO setting
Date: Mon, 17 Mar 2014 13:09:56 +0100 [thread overview]
Message-ID: <20140317120956.GV24917@pengutronix.de> (raw)
In-Reply-To: <CF4C8306.DD5F%ivor@veriline.co.za>
On Mon, Mar 17, 2014 at 10:47:06AM +0200, Ivor Kruger wrote:
> Hi, sure this is a quick and easy question for the groupŠ
>
> On the OMAP4430, using the command from within barebox prompt to configure
> a GPIO for testing hardware:
>
> gpio_direction_output 140 0
>
> Should this be sufficient to set the gpio pin low, or is it required to
> still do some pin muxing as well?
The gpio functions only configure the gpio controller. If this pin is
not gpio by default, you have to configure the pinmux controller aswell.
There is no way to do that on the barebox commandline other than direct register
writes to the pinmux controller.
Sascha
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next prev parent reply other threads:[~2014-03-17 12:10 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <CF4C8000.DD58%ivor@veriline.co.za>
2014-03-17 8:47 ` Ivor Kruger
2014-03-17 12:09 ` Sascha Hauer [this message]
2014-03-17 13:43 ` Ivor Kruger
2014-03-18 16:18 ` Sascha Hauer
2014-03-18 9:21 ` Ivor Kruger
2014-03-18 9:40 ` Ivor Kruger
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