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| author | Hiroshi Doyu <hdoyu@nvidia.com> | 2013-01-15 12:13:12 +0400 |
|---|---|---|
| committer | Stephen Warren <swarren@nvidia.com> | 2013-01-28 21:40:52 +0400 |
| commit | a8a6930157e0e4a2d57abefee487fc4ceba4d53e (patch) | |
| tree | fc8313340fea9735e0dac2e3292f823f8bf6ac09 /arch/arm/mach-tegra/platsmp.c | |
| parent | 7d19a34a89b8c5401bfa56c96fe05c644ecaeafe (diff) | |
| download | linux-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.c | 15 |
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); } |