From: Aleksander Morgado <aleksander@aleksander.es>
To: Mihaita Ivascu <mihaita_ivascu@trimble.com>
Cc: barebox@lists.infradead.org
Subject: Re: Cannot set GPIOs in barebox
Date: Mon, 30 Jul 2018 21:27:55 +0200 [thread overview]
Message-ID: <CAAP7ucL+qH9Ys2z+viSRXmJDJFSEExH+yq_r+YpQxOQ6RujA1g@mail.gmail.com> (raw)
In-Reply-To: <CAEp+FuCBnCw6PY-YcM+Ykh1bSsi-FggyZqsmHhY7rHrY+jtYXQ@mail.gmail.com>
Hey,
>
> This topic could be ignored. GPIO set/get value functions from
> barebox are working fine BUT gpioinfo function has some bug it reports
> unchanged status for gpios value.
>
Not that I got into much detail, but when I saw that same issue (I
have some WIP patches to manage GPIOs via RATP) I just assumed that we
can reliably gpio_get_value() on input GPIOs, and gpio_set_value() on
output GPIOs. Trying to "read" the output GPIO value with
gpio_get_value() may not be reliable or even supported at all. Is that
assumption correct?
--
Aleksander
https://aleksander.es
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next prev parent reply other threads:[~2018-07-30 19:28 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-07-19 9:05 Mihaita Ivascu
2018-07-19 10:30 ` Mihaita Ivascu
2018-07-30 19:27 ` Aleksander Morgado [this message]
2018-07-30 20:40 ` Andrey Smirnov
2018-08-03 8:22 ` Mihaita Ivascu
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