memory: omap-gpmc: Support general purpose input for WAITPINs

[cascardo/linux.git] / Documentation / devicetree / bindings / memory-controllers / omap-gpmc.txt

diff --git a/Documentation/devicetree/bindings/memory-controllers/omap-gpmc.txt b/Documentation/devicetree/bindings/memory-controllers/omap-gpmc.txt
index 13f1378..97e7192 100644 (file)
--- a/Documentation/devicetree/bindings/memory-controllers/omap-gpmc.txt
+++ b/Documentation/devicetree/bindings/memory-controllers/omap-gpmc.txt
@@ -38,6 +38,10 @@ Required properties:
                        0 - NAND_fifoevent
                        1 - NAND_termcount
  - interrupt-cells:    Must be set to 2
+ - gpio-controller:    The GPMC driver implements a GPIO controller for the
+                       GPMC WAIT pins that can be used as general purpose inputs.
+                       0 maps to GPMC_WAIT0 pin.
+ - gpio-cells:         Must be set to 2
 
 Timing properties for child nodes. All are optional and default to 0.
 
@@ -138,6 +142,8 @@ Example for an AM33xx board:
                ranges = <0 0 0x08000000 0x10000000>; /* CS0 @addr 0x8000000, size 0x10000000 */
                interrupt-controller;
                #interrupt-cells = <2>;
+               gpio-controller;
+               #gpio-cells = <2>;
 
                /* child nodes go here */
        };