From: shawn.guo@freescale.com (Shawn Guo)
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCH 0/5] ARM: Centralize the access to the SCU register
Date: Tue, 1 Jul 2014 15:42:56 +0800 [thread overview]
Message-ID: <20140701074255.GF14471@dragon> (raw)
In-Reply-To: <53ACA62F.1090802@free-electrons.com>
On Fri, Jun 27, 2014 at 01:01:03AM +0200, Gregory CLEMENT wrote:
> >> The last patch removed a direct access to the SCU register by an
> >> access through the new scu_standby_enable() function. For this one I
> >> have just checked that the kernel can be built using the
> >> imx_v6_v7_defconfig config, but I didn't test it on an imx6 hardware.
> >
> > Why would we not just turn on these 2 features unconditionally? If we
>
> You mean in scu_enbale() ?
>
> > don't know of any platform where they are broken, then we should just
>
> At least on some imx6 SCU standby is broken according to the code and
> the comments.
Hi Gregory,
What's broken on particular revisions of some i.MX6 SoC is WAIT mode
support, not SCU standby. I think the SCU standby can just be
unconditionally enabled in scu_enbale().
Shawn
WARNING: multiple messages have this Message-ID (diff)
From: Shawn Guo <shawn.guo@freescale.com>
To: Gregory CLEMENT <gregory.clement@free-electrons.com>
Cc: Rob Herring <robherring2@gmail.com>,
Thomas Petazzoni <thomas.petazzoni@free-electrons.com>,
Andrew Lunn <andrew@lunn.ch>,
Russell King <linux@arm.linux.org.uk>,
Jason Cooper <jason@lakedaemon.net>,
Tawfik Bayouk <tawfik@marvell.com>,
"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
Nadav Haklai <nadavh@marvell.com>,
Lior Amsalem <alior@marvell.com>,
"linux-arm-kernel@lists.infradead.org"
<linux-arm-kernel@lists.infradead.org>,
Sascha Hauer <kernel@pengutronix.de>,
Ezequiel Garcia <ezequiel.garcia@free-electrons.com>,
Sebastian Hesselbarth <sebastian.hesselbarth@gmail.com>
Subject: Re: [PATCH 0/5] ARM: Centralize the access to the SCU register
Date: Tue, 1 Jul 2014 15:42:56 +0800 [thread overview]
Message-ID: <20140701074255.GF14471@dragon> (raw)
In-Reply-To: <53ACA62F.1090802@free-electrons.com>
On Fri, Jun 27, 2014 at 01:01:03AM +0200, Gregory CLEMENT wrote:
> >> The last patch removed a direct access to the SCU register by an
> >> access through the new scu_standby_enable() function. For this one I
> >> have just checked that the kernel can be built using the
> >> imx_v6_v7_defconfig config, but I didn't test it on an imx6 hardware.
> >
> > Why would we not just turn on these 2 features unconditionally? If we
>
> You mean in scu_enbale() ?
>
> > don't know of any platform where they are broken, then we should just
>
> At least on some imx6 SCU standby is broken according to the code and
> the comments.
Hi Gregory,
What's broken on particular revisions of some i.MX6 SoC is WAIT mode
support, not SCU standby. I think the SCU standby can just be
unconditionally enabled in scu_enbale().
Shawn
next prev parent reply other threads:[~2014-07-01 7:42 UTC|newest]
Thread overview: 28+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-06-26 22:43 [PATCH 0/5] ARM: Centralize the access to the SCU register Gregory CLEMENT
2014-06-26 22:43 ` Gregory CLEMENT
2014-06-26 22:43 ` [PATCH 1/5] ARM: smp_scu: Used defined value instead of literal constant Gregory CLEMENT
2014-06-26 22:43 ` Gregory CLEMENT
2014-06-26 22:55 ` Gregory CLEMENT
2014-06-26 22:55 ` Gregory CLEMENT
2014-06-27 12:08 ` Jason Cooper
2014-06-27 12:08 ` Jason Cooper
2014-06-26 22:43 ` [PATCH 2/5] ARM: smp_scu: Add the enable speculative linefills operation Gregory CLEMENT
2014-06-26 22:43 ` Gregory CLEMENT
2014-06-28 15:02 ` Thomas Petazzoni
2014-06-28 15:02 ` Thomas Petazzoni
2014-06-30 12:21 ` Gregory CLEMENT
2014-06-30 12:21 ` Gregory CLEMENT
2014-06-26 22:43 ` [PATCH 3/5] ARM: smp_scu: Add the enable standby operation Gregory CLEMENT
2014-06-26 22:43 ` Gregory CLEMENT
2014-06-26 22:43 ` [PATCH 4/5] ARM: mvebu: Enable SCU Speculative linefills to L2 for Armada 375/38x Gregory CLEMENT
2014-06-26 22:43 ` Gregory CLEMENT
2014-06-28 15:04 ` Thomas Petazzoni
2014-06-28 15:04 ` Thomas Petazzoni
2014-06-26 22:43 ` [PATCH 5/5] ARM: imx6q: Use the new function scu_standby_enable() Gregory CLEMENT
2014-06-26 22:43 ` Gregory CLEMENT
2014-06-26 22:56 ` [PATCH 0/5] ARM: Centralize the access to the SCU register Rob Herring
2014-06-26 22:56 ` Rob Herring
2014-06-26 23:01 ` Gregory CLEMENT
2014-06-26 23:01 ` Gregory CLEMENT
2014-07-01 7:42 ` Shawn Guo [this message]
2014-07-01 7:42 ` Shawn Guo
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