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-rw-r--r--arch/arm/mach-mx5/cpu.c19
1 files changed, 19 insertions, 0 deletions
diff --git a/arch/arm/mach-mx5/cpu.c b/arch/arm/mach-mx5/cpu.c
index 2d37785..eaacb6e 100644
--- a/arch/arm/mach-mx5/cpu.c
+++ b/arch/arm/mach-mx5/cpu.c
@@ -70,6 +70,25 @@ int mx51_revision(void)
}
EXPORT_SYMBOL(mx51_revision);
+#ifdef CONFIG_NEON
+
+/*
+ * All versions of the silicon before Rev. 3 have broken NEON implementations.
+ * Dependent on link order - so the assumption is that vfp_init is called
+ * before us.
+ */
+static int __init mx51_neon_fixup(void)
+{
+ if (mx51_revision() < MX51_CHIP_REV_3_0 && (elf_hwcap & HWCAP_NEON)) {
+ elf_hwcap &= ~HWCAP_NEON;
+ pr_info("Turning off NEON support, detected broken NEON implementation\n");
+ }
+ return 0;
+}
+
+late_initcall(mx51_neon_fixup);
+#endif
+
static int __init post_cpu_init(void)
{
unsigned int reg;
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