From: Maxime Ripard <maxime.ripard@free-electrons.com>
To: Philipp Zabel <p.zabel@pengutronix.de>,
Linus Walleij <linus.walleij@linaro.org>
Cc: Alexandre Courbot <gnurou@gmail.com>,
Ulf Hansson <ulf.hansson@linaro.org>,
linux-samsung-soc <linux-samsung-soc@vger.kernel.org>,
Srinivas KANDAGATLA <srinivas.kandagatla@st.com>,
Dmitry Eremin-Solenikov <dbaryshkov@gmail.com>,
"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
"linux-doc@vger.kernel.org" <linux-doc@vger.kernel.org>,
Stephen Gallimore <stephen.gallimore@st.com>,
Houcheng Lin <houcheng@gmail.com>,
sre@kernel.org, Vikas Sajjan <vikas.sajjan@samsung.com>,
"devicetree@vger.kernel.org" <devicetree@vger.kernel.org>,
Rob Herring <robh+dt@kernel.org>,
Grant Likely <grant.likely@linaro.org>,
David Woodhouse <dwmw2@infradead.org>,
"linux-arm-kernel@lists.infradead.org"
<linux-arm-kernel@lists.infradead.org>
Subject: Re: [RFC PATCH v3] reset: Add a defer reset object to send board specific reset
Date: Tue, 8 Jul 2014 10:05:35 +0200 [thread overview]
Message-ID: <20140708080535.GJ13423@lukather> (raw)
In-Reply-To: <CACRpkdYfu8HmVCkn9JFh+YP5OPdr8o9nTfoCnkJ7SSpGoenQUg@mail.gmail.com>
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On Tue, Jul 08, 2014 at 09:52:03AM +0200, Linus Walleij wrote:
> On Wed, Jun 18, 2014 at 3:37 PM, Houcheng Lin <houcheng@gmail.com> wrote:
>
> > The Problem
> > -----------
> > The reset signal on a hardware board is send either:
> > - during machine initialization
> > - during bus master's initialization
>
> I just thought about this a bit, since there isn't already a generic GPIO
> reset driver, just call this drivers/reset/reset-gpio.c and make the
> ability to deferral just a configuration detail of the GPIO reset driver.
Philipp has been working on one for quite some time. See
http://www.spinics.net/lists/arm-kernel/msg321927.html
However, it seems to progress slowly, and we don't seem to be able to
reach a consensus here.
If you ask me, having to set a few extra properties like this just
advocates for a regular reset driver and DT node for the reset GPIO,
but I'm pretty sure Philipp will feel otherwise :)
Maxime
--
Maxime Ripard, Free Electrons
Embedded Linux, Kernel and Android engineering
http://free-electrons.com
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WARNING: multiple messages have this Message-ID (diff)
From: maxime.ripard@free-electrons.com (Maxime Ripard)
To: linux-arm-kernel@lists.infradead.org
Subject: [RFC PATCH v3] reset: Add a defer reset object to send board specific reset
Date: Tue, 8 Jul 2014 10:05:35 +0200 [thread overview]
Message-ID: <20140708080535.GJ13423@lukather> (raw)
In-Reply-To: <CACRpkdYfu8HmVCkn9JFh+YP5OPdr8o9nTfoCnkJ7SSpGoenQUg@mail.gmail.com>
On Tue, Jul 08, 2014 at 09:52:03AM +0200, Linus Walleij wrote:
> On Wed, Jun 18, 2014 at 3:37 PM, Houcheng Lin <houcheng@gmail.com> wrote:
>
> > The Problem
> > -----------
> > The reset signal on a hardware board is send either:
> > - during machine initialization
> > - during bus master's initialization
>
> I just thought about this a bit, since there isn't already a generic GPIO
> reset driver, just call this drivers/reset/reset-gpio.c and make the
> ability to deferral just a configuration detail of the GPIO reset driver.
Philipp has been working on one for quite some time. See
http://www.spinics.net/lists/arm-kernel/msg321927.html
However, it seems to progress slowly, and we don't seem to be able to
reach a consensus here.
If you ask me, having to set a few extra properties like this just
advocates for a regular reset driver and DT node for the reset GPIO,
but I'm pretty sure Philipp will feel otherwise :)
Maxime
--
Maxime Ripard, Free Electrons
Embedded Linux, Kernel and Android engineering
http://free-electrons.com
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WARNING: multiple messages have this Message-ID (diff)
From: Maxime Ripard <maxime.ripard@free-electrons.com>
To: Philipp Zabel <p.zabel@pengutronix.de>,
Linus Walleij <linus.walleij@linaro.org>
Cc: Houcheng Lin <houcheng@gmail.com>,
Alexandre Courbot <gnurou@gmail.com>,
Grant Likely <grant.likely@linaro.org>,
Rob Herring <robh+dt@kernel.org>,
Dmitry Eremin-Solenikov <dbaryshkov@gmail.com>,
David Woodhouse <dwmw2@infradead.org>,
Stephen Gallimore <stephen.gallimore@st.com>,
Srinivas KANDAGATLA <srinivas.kandagatla@st.com>,
Ulf Hansson <ulf.hansson@linaro.org>,
sre@kernel.org,
"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
"devicetree@vger.kernel.org" <devicetree@vger.kernel.org>,
"linux-doc@vger.kernel.org" <linux-doc@vger.kernel.org>,
Vikas Sajjan <vikas.sajjan@samsung.com>,
linux-samsung-soc <linux-samsung-soc@vger.kernel.org>,
"linux-arm-kernel@lists.infradead.org"
<linux-arm-kernel@lists.infradead.org>
Subject: Re: [RFC PATCH v3] reset: Add a defer reset object to send board specific reset
Date: Tue, 8 Jul 2014 10:05:35 +0200 [thread overview]
Message-ID: <20140708080535.GJ13423@lukather> (raw)
In-Reply-To: <CACRpkdYfu8HmVCkn9JFh+YP5OPdr8o9nTfoCnkJ7SSpGoenQUg@mail.gmail.com>
[-- Attachment #1: Type: text/plain, Size: 1083 bytes --]
On Tue, Jul 08, 2014 at 09:52:03AM +0200, Linus Walleij wrote:
> On Wed, Jun 18, 2014 at 3:37 PM, Houcheng Lin <houcheng@gmail.com> wrote:
>
> > The Problem
> > -----------
> > The reset signal on a hardware board is send either:
> > - during machine initialization
> > - during bus master's initialization
>
> I just thought about this a bit, since there isn't already a generic GPIO
> reset driver, just call this drivers/reset/reset-gpio.c and make the
> ability to deferral just a configuration detail of the GPIO reset driver.
Philipp has been working on one for quite some time. See
http://www.spinics.net/lists/arm-kernel/msg321927.html
However, it seems to progress slowly, and we don't seem to be able to
reach a consensus here.
If you ask me, having to set a few extra properties like this just
advocates for a regular reset driver and DT node for the reset GPIO,
but I'm pretty sure Philipp will feel otherwise :)
Maxime
--
Maxime Ripard, Free Electrons
Embedded Linux, Kernel and Android engineering
http://free-electrons.com
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next prev parent reply other threads:[~2014-07-08 8:05 UTC|newest]
Thread overview: 19+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-06-18 13:37 [RFC PATCH v3] reset: Add a defer reset object to send board specific reset Houcheng Lin
2014-06-20 9:35 ` Maxime Ripard
2014-07-07 12:38 ` Linus Walleij
2014-07-10 22:00 ` Houcheng Lin
2014-07-08 7:52 ` Linus Walleij
2014-07-08 7:52 ` Linus Walleij
2014-07-08 8:05 ` Maxime Ripard [this message]
2014-07-08 8:05 ` Maxime Ripard
2014-07-08 8:05 ` Maxime Ripard
2014-07-08 9:38 ` Linus Walleij
2014-07-08 9:38 ` Linus Walleij
2014-08-08 14:23 ` Philipp Zabel
2014-08-08 14:23 ` Philipp Zabel
2014-08-11 17:33 ` Maxime Ripard
2014-08-11 17:33 ` Maxime Ripard
2014-08-14 9:36 ` Philipp Zabel
2014-08-14 9:36 ` Philipp Zabel
2014-08-14 10:47 ` Maxime Ripard
2014-08-14 10:47 ` Maxime Ripard
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