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authorHiroshi Doyu <hdoyu@nvidia.com>2013-01-15 12:13:12 +0400
committerStephen Warren <swarren@nvidia.com>2013-01-28 21:40:52 +0400
commita8a6930157e0e4a2d57abefee487fc4ceba4d53e (patch)
treefc8313340fea9735e0dac2e3292f823f8bf6ac09 /arch/arm/mach-tegra/platsmp.c
parent7d19a34a89b8c5401bfa56c96fe05c644ecaeafe (diff)
downloadlinux-a8a6930157e0e4a2d57abefee487fc4ceba4d53e.tar.xz
ARM: tegra: Use DT /cpu node to detect number of CPU core
SCU based detection only works with Cortex-A9 MP and it doesn't support ones with multiple clusters. The only way to detect number of CPU core correctly is with DT /cpu node. Tegra SoCs decided to use DT detection as the only way and to not use SCU based detection at all. Even if DT /cpu node based detection fails, it continues with a single core Signed-off-by: Hiroshi Doyu <hdoyu@nvidia.com> Signed-off-by: Stephen Warren <swarren@nvidia.com>
Diffstat (limited to 'arch/arm/mach-tegra/platsmp.c')
-rw-r--r--arch/arm/mach-tegra/platsmp.c15
1 files changed, 0 insertions, 15 deletions
diff --git a/arch/arm/mach-tegra/platsmp.c b/arch/arm/mach-tegra/platsmp.c
index 1b926df99c4b..79fa7857d68d 100644
--- a/arch/arm/mach-tegra/platsmp.c
+++ b/arch/arm/mach-tegra/platsmp.c
@@ -143,23 +143,8 @@ done:
return status;
}
-/*
- * Initialise the CPU possible map early - this describes the CPUs
- * which may be present or become present in the system.
- */
static void __init tegra_smp_init_cpus(void)
{
- unsigned int i, ncores = scu_get_core_count(scu_base);
-
- if (ncores > nr_cpu_ids) {
- pr_warn("SMP: %u cores greater than maximum (%u), clipping\n",
- ncores, nr_cpu_ids);
- ncores = nr_cpu_ids;
- }
-
- for (i = 0; i < ncores; i++)
- set_cpu_possible(i, true);
-
set_smp_cross_call(gic_raise_softirq);
}