GICD_IIDR_REVISION_MASK   67 include/linux/irqchip/arm-gic-v3.h #define GICD_IIDR_REVISION_MASK		(0xf << GICD_IIDR_REVISION_SHIFT)
GICD_IIDR_REVISION_MASK   69 include/linux/irqchip/arm-gic.h #define GICD_IIDR_REVISION_MASK		(0xf << GICD_IIDR_REVISION_SHIFT)