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