linux-kernel - [v3 2/2] ARM: tegra: Skip scu_enable(scu

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Date:	Tue, 22 Jan 2013 07:52:02 +0200
From:	Hiroshi Doyu <hdoyu@...dia.com>
To:	<linux-arm-kernel@...ts.infradead.org>
CC:	<arnd@...db.de>, <olof@...om.net>, <santosh.shilimkar@...com>,
	Hiroshi Doyu <hdoyu@...dia.com>,
	Russell King <linux@....linux.org.uk>,
	Stephen Warren <swarren@...dotorg.org>,
	<linux-kernel@...r.kernel.org>, <linux-tegra@...r.kernel.org>
Subject: [v3 2/2] ARM: tegra: Skip scu_enable(scu_base) if not Cortex A9

Skip scu_enable(scu_base) if CPU is not Cortex A9 with SCU.

Signed-off-by: Hiroshi Doyu <hdoyu@...dia.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

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