From: Sebastian Reichel <sre-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org>
To: Josh Wu <josh.wu-AIFe0yeh4nAAvxtiuMwx3w@public.gmane.org>
Cc: Nicolas Ferre
<nicolas.ferre-AIFe0yeh4nAAvxtiuMwx3w@public.gmane.org>,
linux-arm-kernel-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r@public.gmane.org,
Guenter Roeck <linux-0h96xk9xTtrk1uMJSBkQmQ@public.gmane.org>,
Kumar Gala <galak-sgV2jX0FEOL9JmXXK+q4OQ@public.gmane.org>,
Ian Campbell
<ijc+devicetree-KcIKpvwj1kUDXYZnReoRVg@public.gmane.org>,
Rob Herring <robh+dt-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org>,
Ben Dooks <ben.dooks-4yDnlxn2s6sWdaTGBSpHTA@public.gmane.org>,
Krzysztof Kozlowski
<k.kozlowski.k-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>,
Alexandre Belloni
<alexandre.belloni-wi1+55ScJUtKEb57/3fJTNBPR1lH4CV8@public.gmane.org>,
Pawel Moll <pawel.moll-5wv7dgnIgG8@public.gmane.org>,
devicetree-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
linux-pm-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
Sudeep Holla <sudeep.holla-5wv7dgnIgG8@public.gmane.org>,
Wei Yongjun
<yongjun_wei-zrsr2BFq86L20UzCJQGyNP8+0UxHXcjY@public.gmane.org>,
Fabian Frederick <fabf-AgBVmzD5pcezQB+pC5nmwQ@public.gmane.org>,
linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
Boris Brezillon
<boris.brezillon-wi1+55ScJUtKEb57/3fJTNBPR1lH4CV8@public.gmane.org>,
Dmitry Eremin-Solenikov
<dbaryshkov-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>,
David Woodhouse <dwmw2-wEGCiKHe2LqWVfeAwA7xHQ@public.gmane.org>,
Mark Rutland <mark.rutland-5wv7dgnIgG8@public.gmane.org>,
Maxime Ripard
<maxime.ripard-wi1+55ScJUtKEb57/3fJTNBPR1lH4CV8@public.gmane.org>
Subject: Re: [PATCH v2 1/2] power: reset: at91: add sama5d3 reset function
Date: Mon, 20 Jul 2015 18:42:42 +0200 [thread overview]
Message-ID: <20150720164241.GA5930@earth> (raw)
In-Reply-To: <1437384726-24927-1-git-send-email-josh.wu-AIFe0yeh4nAAvxtiuMwx3w@public.gmane.org>
[-- Attachment #1: Type: text/plain, Size: 854 bytes --]
Hi,
On Mon, Jul 20, 2015 at 05:32:05PM +0800, Josh Wu wrote:
> This patch introduces a new compatible string: "atmel,sama5d3-rstc" and
> new reset function for sama5d3 and later chips.
>
> As in sama5d3 or later chips, we don't have to shutdown the DDR
> controller before reset. Shutdown the DDR controller before reset is a
> workaround to avoid DDR signal driving the bus, but since sama5d3 and
> later chips there is no such a conflict.
>
> So in this patch:
> 1. the sama5d3 reset function only need to write the rstc register
> and return.
> 2. we can remove the code related with sama5d3 DDR controller as
> we don't use it at all.
>
> Signed-off-by: Josh Wu <josh.wu-AIFe0yeh4nAAvxtiuMwx3w@public.gmane.org>
> Acked-by: Nicolas Ferre <nicolas.ferre-AIFe0yeh4nAAvxtiuMwx3w@public.gmane.org>
queued.
-- Sebastian
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WARNING: multiple messages have this Message-ID (diff)
From: sre@kernel.org (Sebastian Reichel)
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCH v2 1/2] power: reset: at91: add sama5d3 reset function
Date: Mon, 20 Jul 2015 18:42:42 +0200 [thread overview]
Message-ID: <20150720164241.GA5930@earth> (raw)
In-Reply-To: <1437384726-24927-1-git-send-email-josh.wu@atmel.com>
Hi,
On Mon, Jul 20, 2015 at 05:32:05PM +0800, Josh Wu wrote:
> This patch introduces a new compatible string: "atmel,sama5d3-rstc" and
> new reset function for sama5d3 and later chips.
>
> As in sama5d3 or later chips, we don't have to shutdown the DDR
> controller before reset. Shutdown the DDR controller before reset is a
> workaround to avoid DDR signal driving the bus, but since sama5d3 and
> later chips there is no such a conflict.
>
> So in this patch:
> 1. the sama5d3 reset function only need to write the rstc register
> and return.
> 2. we can remove the code related with sama5d3 DDR controller as
> we don't use it at all.
>
> Signed-off-by: Josh Wu <josh.wu@atmel.com>
> Acked-by: Nicolas Ferre <nicolas.ferre@atmel.com>
queued.
-- Sebastian
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WARNING: multiple messages have this Message-ID (diff)
From: Sebastian Reichel <sre@kernel.org>
To: Josh Wu <josh.wu@atmel.com>
Cc: Nicolas Ferre <nicolas.ferre@atmel.com>,
linux-arm-kernel@lists.infradead.org,
Guenter Roeck <linux@roeck-us.net>,
Kumar Gala <galak@codeaurora.org>,
Ian Campbell <ijc+devicetree@hellion.org.uk>,
Rob Herring <robh+dt@kernel.org>,
Ben Dooks <ben.dooks@codethink.co.uk>,
Krzysztof Kozlowski <k.kozlowski.k@gmail.com>,
Alexandre Belloni <alexandre.belloni@free-electrons.com>,
Pawel Moll <pawel.moll@arm.com>,
devicetree@vger.kernel.org, linux-pm@vger.kernel.org,
Sudeep Holla <sudeep.holla@arm.com>,
Wei Yongjun <yongjun_wei@trendmicro.com.cn>,
Fabian Frederick <fabf@skynet.be>,
linux-kernel@vger.kernel.org,
Boris Brezillon <boris.brezillon@free-electrons.com>,
Dmitry Eremin-Solenikov <dbaryshkov@gmail.com>,
David Woodhouse <dwmw2@infradead.org>,
Mark Rutland <mark.rutland@arm.com>,
Maxime Ripard <maxime.ripard@free-electrons.com>
Subject: Re: [PATCH v2 1/2] power: reset: at91: add sama5d3 reset function
Date: Mon, 20 Jul 2015 18:42:42 +0200 [thread overview]
Message-ID: <20150720164241.GA5930@earth> (raw)
In-Reply-To: <1437384726-24927-1-git-send-email-josh.wu@atmel.com>
[-- Attachment #1: Type: text/plain, Size: 794 bytes --]
Hi,
On Mon, Jul 20, 2015 at 05:32:05PM +0800, Josh Wu wrote:
> This patch introduces a new compatible string: "atmel,sama5d3-rstc" and
> new reset function for sama5d3 and later chips.
>
> As in sama5d3 or later chips, we don't have to shutdown the DDR
> controller before reset. Shutdown the DDR controller before reset is a
> workaround to avoid DDR signal driving the bus, but since sama5d3 and
> later chips there is no such a conflict.
>
> So in this patch:
> 1. the sama5d3 reset function only need to write the rstc register
> and return.
> 2. we can remove the code related with sama5d3 DDR controller as
> we don't use it at all.
>
> Signed-off-by: Josh Wu <josh.wu@atmel.com>
> Acked-by: Nicolas Ferre <nicolas.ferre@atmel.com>
queued.
-- Sebastian
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next prev parent reply other threads:[~2015-07-20 16:42 UTC|newest]
Thread overview: 27+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-07-20 9:32 [PATCH v2 1/2] power: reset: at91: add sama5d3 reset function Josh Wu
2015-07-20 9:32 ` Josh Wu
2015-07-20 9:32 ` Josh Wu
2015-07-20 9:32 ` [PATCH v2 2/2] ARM: at91: sama5/dt: update rstc to correct compatible string Josh Wu
2015-07-20 9:32 ` Josh Wu
2015-07-20 9:32 ` Josh Wu
2015-07-20 9:34 ` Alexandre Belloni
2015-07-20 9:34 ` Alexandre Belloni
2015-07-20 9:34 ` Alexandre Belloni
2015-07-20 12:37 ` Nicolas Ferre
2015-07-20 12:37 ` Nicolas Ferre
2015-07-20 12:37 ` Nicolas Ferre
2015-07-30 16:45 ` Nicolas Ferre
2015-07-30 16:45 ` Nicolas Ferre
2015-07-30 16:45 ` Nicolas Ferre
2015-07-20 9:33 ` [PATCH v2 1/2] power: reset: at91: add sama5d3 reset function Alexandre Belloni
2015-07-20 9:33 ` Alexandre Belloni
2015-07-20 13:12 ` Guenter Roeck
2015-07-20 13:12 ` Guenter Roeck
[not found] ` <1437384726-24927-1-git-send-email-josh.wu-AIFe0yeh4nAAvxtiuMwx3w@public.gmane.org>
2015-07-20 16:42 ` Sebastian Reichel [this message]
2015-07-20 16:42 ` Sebastian Reichel
2015-07-20 16:42 ` Sebastian Reichel
2015-07-28 7:27 ` Nicolas Ferre
2015-07-28 7:27 ` Nicolas Ferre
2015-07-28 7:27 ` Nicolas Ferre
2015-08-05 18:04 ` Sebastian Reichel
2015-08-05 18:04 ` Sebastian Reichel
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