TTB_RGN_OC_WT      11 arch/arm/mm/proc-v7-2level.S #define TTB_RGN_OC_WT	(2 << 3)
TTB_RGN_OC_WT      18 arch/arm/mm/proc-v7-3level.S #define TTB_RGN_OC_WT	(2 << 10)