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>

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);
 }