[deliverable/linux.git] / Documentation / devicetree / bindings / gpio / gpio-grgpio.txt

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:
http://www.gaisler.com/products/grlib/grip.pdf
Commit	Line	Data
ddb27f3b AL	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
08ffb222 AL	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
ddb27f3b AL	25	For further information look in the documentation for the GLIB IP core library:
ddb27f3b AL	26	http://www.gaisler.com/products/grlib/grip.pdf