1*4882a593SmuzhiyunAeroflex Gaisler GRGPIO General Purpose I/O cores. 2*4882a593Smuzhiyun 3*4882a593SmuzhiyunThe GRGPIO GPIO core is available in the GRLIB VHDL IP core library. 4*4882a593Smuzhiyun 5*4882a593SmuzhiyunNote: In the ordinary environment for the GRGPIO core, a Leon SPARC system, 6*4882a593Smuzhiyunthese properties are built from information in the AMBA plug&play. 7*4882a593Smuzhiyun 8*4882a593SmuzhiyunRequired properties: 9*4882a593Smuzhiyun 10*4882a593Smuzhiyun- name : Should be "GAISLER_GPIO" or "01_01a" 11*4882a593Smuzhiyun 12*4882a593Smuzhiyun- reg : Address and length of the register set for the device 13*4882a593Smuzhiyun 14*4882a593Smuzhiyun- interrupts : Interrupt numbers for this device 15*4882a593Smuzhiyun 16*4882a593SmuzhiyunOptional properties: 17*4882a593Smuzhiyun 18*4882a593Smuzhiyun- nbits : The number of gpio lines. If not present driver assumes 32 lines. 19*4882a593Smuzhiyun 20*4882a593Smuzhiyun- irqmap : An array with an index for each gpio line. An index is either a valid 21*4882a593Smuzhiyun index into the interrupts property array, or 0xffffffff that indicates 22*4882a593Smuzhiyun no irq for that line. Driver provides no interrupt support if not 23*4882a593Smuzhiyun present. 24*4882a593Smuzhiyun 25*4882a593SmuzhiyunFor further information look in the documentation for the GLIB IP core library: 26*4882a593Smuzhiyunhttp://www.gaisler.com/products/grlib/grip.pdf 27