diff options
Diffstat (limited to 'Documentation/devicetree/bindings/gpio/gpio-grgpio.txt')
-rw-r--r-- | Documentation/devicetree/bindings/gpio/gpio-grgpio.txt | 26 |
1 files changed, 26 insertions, 0 deletions
diff --git a/Documentation/devicetree/bindings/gpio/gpio-grgpio.txt b/Documentation/devicetree/bindings/gpio/gpio-grgpio.txt new file mode 100644 index 000000000000..e466598105fc --- /dev/null +++ b/Documentation/devicetree/bindings/gpio/gpio-grgpio.txt | |||
@@ -0,0 +1,26 @@ | |||
1 | Aeroflex Gaisler GRGPIO General Purpose I/O cores. | ||
2 | |||
3 | The GRGPIO GPIO core is available in the GRLIB VHDL IP core library. | ||
4 | |||
5 | Note: In the ordinary environment for the GRGPIO core, a Leon SPARC system, | ||
6 | these properties are built from information in the AMBA plug&play. | ||
7 | |||
8 | Required properties: | ||
9 | |||
10 | - name : Should be "GAISLER_GPIO" or "01_01a" | ||
11 | |||
12 | - reg : Address and length of the register set for the device | ||
13 | |||
14 | - interrupts : Interrupt numbers for this device | ||
15 | |||
16 | Optional properties: | ||
17 | |||
18 | - nbits : The number of gpio lines. If not present driver assumes 32 lines. | ||
19 | |||
20 | - irqmap : An array with an index for each gpio line. An index is either a valid | ||
21 | index into the interrupts property array, or 0xffffffff that indicates | ||
22 | no irq for that line. Driver provides no interrupt support if not | ||
23 | present. | ||
24 | |||
25 | For further information look in the documentation for the GLIB IP core library: | ||
26 | http://www.gaisler.com/products/grlib/grip.pdf | ||