From: shawn.guo@freescale.com (Shawn Guo)
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCH 2/3] ARM: smp_scu: enable SCU standby support
Date: Tue, 22 Jul 2014 10:09:12 +0800 [thread overview]
Message-ID: <20140722020911.GO8537@dragon> (raw)
In-Reply-To: <20140721102638.GE32578@arm.com>
On Mon, Jul 21, 2014 at 11:26:38AM +0100, Catalin Marinas wrote:
> The usual question - could the firmware enable this bit before Linux
> starts?
It could, I guess. Actually, on i.MX we're setting this bit in platform
code right now. But I think setting this bit makes sense for most of
the platforms, so it can reasonably be done in SCU core function. Isn't
it the point of having core/common function after all?
> We already do a read/modify/write sequence here and are only
> supposed to write the enable bit as the rest are implementation defined.
Isn't standby bit implemented by all A9 SCU except a couple of very
early revisions (per Will)?
Shawn
next prev parent reply other threads:[~2014-07-22 2:09 UTC|newest]
Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-07-21 7:45 [PATCH 0/3] Enable SCU standby support at core level Shawn Guo
2014-07-21 7:45 ` [PATCH 1/3] ARM: smp_scu: use macro for SCU enable bit Shawn Guo
2014-07-21 7:45 ` [PATCH 2/3] ARM: smp_scu: enable SCU standby support Shawn Guo
2014-07-21 8:51 ` Will Deacon
2014-07-21 9:27 ` Shawn Guo
2014-07-21 9:44 ` Will Deacon
2014-07-22 1:56 ` Shawn Guo
2014-07-21 10:26 ` Catalin Marinas
2014-07-22 2:09 ` Shawn Guo [this message]
2014-07-22 16:13 ` Catalin Marinas
2014-07-23 4:50 ` Shawn Guo
2014-07-23 16:45 ` Catalin Marinas
2014-07-24 8:49 ` Shawn Guo
2014-07-21 7:45 ` [PATCH 3/3] ARM: imx: remove SCU standby enable code Shawn Guo
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