Add the rt linux 4.1.3-rt3 as base

[kvmfornfv.git] / kernel / Documentation / devicetree / bindings / gpio / gpio-tz1090-pdc.txt

diff --git a/kernel/Documentation/devicetree/bindings/gpio/gpio-tz1090-pdc.txt b/kernel/Documentation/devicetree/bindings/gpio/gpio-tz1090-pdc.txt
new file mode 100644 (file)
index 0000000..1fd98ff
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+++ b/kernel/Documentation/devicetree/bindings/gpio/gpio-tz1090-pdc.txt
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+ImgTec TZ1090 PDC GPIO Controller
+
+Required properties:
+- compatible: Compatible property value should be "img,tz1090-pdc-gpio".
+
+- reg: Physical base address of the controller and length of memory mapped
+  region. This starts at and cover the SOC_GPIO_CONTROL registers.
+
+- gpio-controller: Specifies that the node is a gpio controller.
+
+- #gpio-cells: Should be 2. The syntax of the gpio specifier used by client
+  nodes should have the following values.
+     <[phandle of the gpio controller node]
+      [PDC gpio number]
+      [gpio flags]>
+
+  Values for gpio specifier:
+  - GPIO number: a value in the range 0 to 6.
+  - GPIO flags: bit field of flags, as defined in <dt-bindings/gpio/gpio.h>.
+    Only the following flags are supported:
+      GPIO_ACTIVE_HIGH
+      GPIO_ACTIVE_LOW
+
+Optional properties:
+- gpio-ranges: Mapping to pin controller pins (as described in
+  Documentation/devicetree/bindings/gpio/gpio.txt)
+
+- interrupts: Individual syswake interrupts (other GPIOs cannot interrupt)
+
+
+Example:
+
+       pdc_gpios: gpio-controller@02006500 {
+               gpio-controller;
+               #gpio-cells = <2>;
+
+               compatible = "img,tz1090-pdc-gpio";
+               reg = <0x02006500 0x100>;
+
+               interrupt-parent = <&pdc>;
+               interrupts =    <8  IRQ_TYPE_NONE>,     /* Syswake 0 */
+                               <9  IRQ_TYPE_NONE>,     /* Syswake 1 */
+                               <10 IRQ_TYPE_NONE>;     /* Syswake 2 */
+               gpio-ranges = <&pdc_pinctrl 0 0 7>;
+       };