@ LSL: 左移，相当于把ctrl_lock_value这8bit的值赋值到r2的bit[31:24] (DLL Force Delay), orr r2, r2, #0x100000 @ set bit20, PhyControl0.ctrl_inc=0x10 orr r2 ,r2, #0x1000 @ set bit12, PhyControl0.start_point=0x10 orr ...