From: Kuninori Morimoto <kuninori.morimoto.gx@gmail.com>
To: linux-arm-kernel@lists.infradead.org
Subject: Re: [periperi] How to set default GPIO pin ?
Date: Fri, 12 Sep 2014 07:27:15 +0000 [thread overview]
Message-ID: <874mwdmh7z.wl%kuninori.morimoto.gx@gmail.com> (raw)
In-Reply-To: <2862746.g5u9pdpKDi@avalon>
Hi Laurent, Linus (Walleij)
Thank you for your help
> (Moving this thread to linux-sh and linux-arm and CC'ing Linus Walleij)
>
> On Sunday 31 August 2014 22:08:52 Kuninori Morimoto wrote:
> >
> > I know we can use "defalt" PFC settings on DT.
> > But, how to use "defalt" GPIO pin settings on DT ?
> >
> > We would like to use GPIO 7-17 as Low output,
> > and do nothing after boot.
>
> From a DT point of view I believe this is supposed to be done by specifying
> the output-low or output-high properties in the pinctrl configuration node.
> However, these properties are not supported by the PFC driver, and there's no
> easy way for the PFC driver to configure GPIOs handled by a different driver
> such as the gpio-rcar driver for instance.
>
> Linus, do you have any hindsight on how this should be implemented ?
I'm happy if we can use this "defalt" GPIO on DT.
Linus, we need your opinion
Best regards
---
Kuninori Morimoto
WARNING: multiple messages have this Message-ID (diff)
From: kuninori.morimoto.gx@gmail.com (Kuninori Morimoto)
To: linux-arm-kernel@lists.infradead.org
Subject: [periperi] How to set default GPIO pin ?
Date: Fri, 12 Sep 2014 00:27:15 -0700 (PDT) [thread overview]
Message-ID: <874mwdmh7z.wl%kuninori.morimoto.gx@gmail.com> (raw)
In-Reply-To: <2862746.g5u9pdpKDi@avalon>
Hi Laurent, Linus (Walleij)
Thank you for your help
> (Moving this thread to linux-sh and linux-arm and CC'ing Linus Walleij)
>
> On Sunday 31 August 2014 22:08:52 Kuninori Morimoto wrote:
> >
> > I know we can use "defalt" PFC settings on DT.
> > But, how to use "defalt" GPIO pin settings on DT ?
> >
> > We would like to use GPIO 7-17 as Low output,
> > and do nothing after boot.
>
> From a DT point of view I believe this is supposed to be done by specifying
> the output-low or output-high properties in the pinctrl configuration node.
> However, these properties are not supported by the PFC driver, and there's no
> easy way for the PFC driver to configure GPIOs handled by a different driver
> such as the gpio-rcar driver for instance.
>
> Linus, do you have any hindsight on how this should be implemented ?
I'm happy if we can use this "defalt" GPIO on DT.
Linus, we need your opinion
Best regards
---
Kuninori Morimoto
next prev parent reply other threads:[~2014-09-12 7:27 UTC|newest]
Thread overview: 16+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <8738cc0vx9.wl%kuninori.morimoto.gx@gmail.com>
2014-09-10 8:55 ` [periperi] How to set default GPIO pin ? Laurent Pinchart
2014-09-10 8:55 ` Laurent Pinchart
2014-09-12 7:27 ` Kuninori Morimoto [this message]
2014-09-12 7:27 ` Kuninori Morimoto
2014-09-23 15:06 ` Linus Walleij
2014-09-23 15:06 ` Linus Walleij
2014-09-23 15:06 ` Linus Walleij
2014-09-28 21:25 ` Laurent Pinchart
2014-09-28 21:25 ` Laurent Pinchart
2014-09-28 21:25 ` Laurent Pinchart
2014-09-28 23:58 ` Kuninori Morimoto
2014-09-28 23:58 ` Kuninori Morimoto
2014-09-28 23:58 ` Kuninori Morimoto
2014-09-29 8:58 ` Linus Walleij
2014-09-29 8:58 ` Linus Walleij
2014-09-29 8:58 ` Linus Walleij
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