From: Hiroshi Doyu <hdoyu@nvidia.com>
To: <linux-arm-kernel@lists.infradead.org>
Cc: <arnd@arndb.de>, <olof@lixom.net>, <santosh.shilimkar@ti.com>,
Hiroshi Doyu <hdoyu@nvidia.com>,
Russell King <linux@arm.linux.org.uk>,
Stephen Warren <swarren@wwwdotorg.org>,
<linux-kernel@vger.kernel.org>, <linux-tegra@vger.kernel.org>
Subject: [v3 2/2] ARM: tegra: Skip scu_enable(scu_base) if not Cortex A9
Date: Tue, 22 Jan 2013 07:52:02 +0200 [thread overview]
Message-ID: <1358833924-24535-2-git-send-email-hdoyu@nvidia.com> (raw)
In-Reply-To: <1358833924-24535-1-git-send-email-hdoyu@nvidia.com>
Skip scu_enable(scu_base) if CPU is not Cortex A9 with SCU.
Signed-off-by: Hiroshi Doyu <hdoyu@nvidia.com>
---
arch/arm/mach-tegra/platsmp.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/arch/arm/mach-tegra/platsmp.c b/arch/arm/mach-tegra/platsmp.c
index 689ee4b..8853bd2 100644
--- a/arch/arm/mach-tegra/platsmp.c
+++ b/arch/arm/mach-tegra/platsmp.c
@@ -38,7 +38,6 @@
extern void tegra_secondary_startup(void);
static cpumask_t tegra_cpu_init_mask;
-static void __iomem *scu_base = IO_ADDRESS(TEGRA_ARM_PERIF_BASE);
#define EVP_CPU_RESET_VECTOR \
(IO_ADDRESS(TEGRA_EXCEPTION_VECTORS_BASE) + 0x100)
@@ -187,7 +186,8 @@ static void __init tegra_smp_prepare_cpus(unsigned int max_cpus)
/* Always mark the boot CPU (CPU0) as initialized. */
cpumask_set_cpu(0, &tegra_cpu_init_mask);
- scu_enable(scu_base);
+ if (scu_a9_has_base())
+ scu_enable(IO_ADDRESS(scu_a9_get_base()));
}
struct smp_operations tegra_smp_ops __initdata = {
--
1.7.9.5
next prev parent reply other threads:[~2013-01-22 5:52 UTC|newest]
Thread overview: 20+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-01-22 5:52 [v3 1/2] ARM: Add API to detect SCU base address from CP15 Hiroshi Doyu
2013-01-22 5:52 ` Hiroshi Doyu [this message]
2013-01-22 6:07 ` [v3 2/2] ARM: tegra: Skip scu_enable(scu_base) if not Cortex A9 Santosh Shilimkar
2013-01-22 16:57 ` Stephen Warren
2013-01-22 17:04 ` Olof Johansson
2013-01-23 8:58 ` Santosh Shilimkar
2013-01-23 10:58 ` Hiroshi Doyu
2013-01-23 11:09 ` Santosh Shilimkar
2013-01-24 5:04 ` Stephen Warren
2013-01-24 5:56 ` Santosh Shilimkar
2013-01-24 6:42 ` Hiroshi Doyu
2013-01-28 7:18 ` Hiroshi Doyu
2013-01-28 14:47 ` Russell King - ARM Linux
2013-01-23 6:04 ` Hiroshi Doyu
2013-01-23 9:27 ` Hiroshi Doyu
2013-01-23 16:37 ` Stephen Warren
2013-01-22 18:35 ` Stephen Warren
2013-01-22 18:46 ` Will Deacon
2013-01-22 18:49 ` Stephen Warren
2013-01-28 18:03 ` [v3 1/2] ARM: Add API to detect SCU base address from CP15 Stephen Warren
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