path: root/Documentation/devicetree/bindings/gpio/gpio-grgpio.txt
diff options
Diffstat (limited to 'Documentation/devicetree/bindings/gpio/gpio-grgpio.txt')
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 @@
+Aeroflex Gaisler GRGPIO General Purpose I/O cores.
+The GRGPIO GPIO core is available in the GRLIB VHDL IP core library.
+Note: In the ordinary environment for the GRGPIO core, a Leon SPARC system,
+these properties are built from information in the AMBA plug&play.
+Required properties:
+- name : Should be "GAISLER_GPIO" or "01_01a"
+- reg : Address and length of the register set for the device
+- interrupts : Interrupt numbers for this device
+Optional properties:
+- nbits : The number of gpio lines. If not present driver assumes 32 lines.
+- irqmap : An array with an index for each gpio line. An index is either a valid
+ index into the interrupts property array, or 0xffffffff that indicates
+ no irq for that line. Driver provides no interrupt support if not
+ present.
+For further information look in the documentation for the GLIB IP core library: