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-rw-r--r--arch/arm/cpu/armv7/start.S13
1 files changed, 13 insertions, 0 deletions
diff --git a/arch/arm/cpu/armv7/start.S b/arch/arm/cpu/armv7/start.S
index 41fb24c..5050021 100644
--- a/arch/arm/cpu/armv7/start.S
+++ b/arch/arm/cpu/armv7/start.S
@@ -215,6 +215,19 @@ skip_errata_454179:
skip_errata_430973:
#endif
+#ifdef CONFIG_ARM_ERRATA_621766
+ cmp r2, #0x21 @ Only on < r2p1
+ bge skip_errata_621766
+
+ mrc p15, 0, r0, c1, c0, 1 @ Read ACR
+ orr r0, r0, #(0x1 << 5) @ Set L1NEON bit
+ push {r1-r5} @ Save the cpu info registers
+ bl v7_arch_cp15_set_acr
+ pop {r1-r5} @ Restore the cpu info - fall through
+
+skip_errata_621766:
+#endif
+
mov pc, r5 @ back to my caller
ENDPROC(cpu_init_cp15)