REVISION | 3:0 | roRead-only | 0x2 | Returns an IMPLEMENTATION DEFINED value that identifies the revision of the trace registers and the OS Save and Restore registers.Arm recommends:That the initial implementation sets REVISION==0x0 and the field then increments for any subsequent implementations. However, it is acceptable to omit some values or use another scheme to identify the revision number.That 2.REVISION==IDR1.REVISION. However, in situations where it is difficult to align these fields, such as with a metal layer fix, then it is acceptable to change the REVISION fields independently. |