3 files changed, 131 insertions, 1 deletions

diff --git a/Documentation/devicetree/bindings/interrupt-controller/interrupts.txt b/Documentation/devicetree/bindings/interrupt-controller/interrupts.txt
new file mode 100644
index 000000000000..72a06c0ab1db
--- /dev/null
+++ b/Documentation/devicetree/bindings/interrupt-controller/interrupts.txt
@@ -0,0 +1,95 @@
+Specifying interrupt information for devices
+============================================
+
+1) Interrupt client nodes
+-------------------------
+
+Nodes that describe devices which generate interrupts must contain an
+"interrupts" property. This property must contain a list of interrupt
+specifiers, one per output interrupt. The format of the interrupt specifier is
+determined by the interrupt controller to which the interrupts are routed; see
+section 2 below for details.
+
+The "interrupt-parent" property is used to specify the controller to which
+interrupts are routed and contains a single phandle referring to the interrupt
+controller node. This property is inherited, so it may be specified in an
+interrupt client node or in any of its parent nodes.
+
+2) Interrupt controller nodes
+-----------------------------
+
+A device is marked as an interrupt controller with the "interrupt-controller"
+property. This is a empty, boolean property. An additional "#interrupt-cells"
+property defines the number of cells needed to specify a single interrupt.
+
+It is the responsibility of the interrupt controller's binding to define the
+length and format of the interrupt specifier. The following two variants are
+commonly used:
+
+  a) one cell
+  -----------
+  The #interrupt-cells property is set to 1 and the single cell defines the
+  index of the interrupt within the controller.
+
+  Example:
+
+        vic: intc@10140000 {
+                compatible = "arm,versatile-vic";
+                interrupt-controller;
+                #interrupt-cells = <1>;
+                reg = <0x10140000 0x1000>;
+        };
+
+        sic: intc@10003000 {
+                compatible = "arm,versatile-sic";
+                interrupt-controller;
+                #interrupt-cells = <1>;
+                reg = <0x10003000 0x1000>;
+                interrupt-parent = <&vic>;
+                interrupts = <31>; /* Cascaded to vic */
+        };
+
+  b) two cells
+  ------------
+  The #interrupt-cells property is set to 2 and the first cell defines the
+  index of the interrupt within the controller, while the second cell is used
+  to specify any of the following flags:
+    - bits[3:0] trigger type and level flags
+        1 = low-to-high edge triggered
+        2 = high-to-low edge triggered
+        4 = active high level-sensitive
+        8 = active low level-sensitive
+
+  Example:
+
+        i2c@7000c000 {
+                gpioext: gpio-adnp@41 {
+                        compatible = "ad,gpio-adnp";
+                        reg = <0x41>;
+
+                        interrupt-parent = <&gpio>;
+                        interrupts = <160 1>;
+
+                        gpio-controller;
+                        #gpio-cells = <1>;
+
+                        interrupt-controller;
+                        #interrupt-cells = <2>;
+
+                        nr-gpios = <64>;
+                };
+
+                sx8634@2b {
+                        compatible = "smtc,sx8634";
+                        reg = <0x2b>;
+
+                        interrupt-parent = <&gpioext>;
+                        interrupts = <3 0x8>;
+
+                        #address-cells = <1>;
+                        #size-cells = <0>;
+
+                        threshold = <0x40>;
+                        sensitivity = <7>;
+                };
+        };
diff --git a/Documentation/devicetree/bindings/pwm/mxs-pwm.txt b/Documentation/devicetree/bindings/pwm/mxs-pwm.txt
index b16f4a57d111..11963e4d6bc4 100644
--- a/Documentation/devicetree/bindings/pwm/mxs-pwm.txt
+++ b/Documentation/devicetree/bindings/pwm/mxs-pwm.txt
@@ -11,7 +11,7 @@ Example:
 
 pwm: pwm@80064000 {
         compatible = "fsl,imx28-pwm", "fsl,imx23-pwm";
-        reg = <0x80064000 2000>;
+        reg = <0x80064000 0x2000>;
         #pwm-cells = <2>;
         fsl,pwm-number = <8>;
 };
diff --git a/Documentation/devicetree/bindings/serial/fsl-imx-uart.txt b/Documentation/devicetree/bindings/serial/fsl-imx-uart.txt
new file mode 100644
index 000000000000..c58573b5b1a4
--- /dev/null
+++ b/Documentation/devicetree/bindings/serial/fsl-imx-uart.txt
@@ -0,0 +1,35 @@
+* Freescale i.MX UART controller
+
+Required properties:
+- compatible : should be "fsl,imx21-uart"
+- reg : Address and length of the register set for the device
+- interrupts : Should contain UART interrupt number
+
+Optional properties:
+- fsl,uart-has-rtscts: indicate that RTS/CTS signals are used
+
+Note: Each uart controller should have an alias correctly numbered
+in "aliases" node.
+
+Example:
+
+- From imx51.dtsi:
+aliases {
+        serial0 = &uart1;
+        serial1 = &uart2;
+        serial2 = &uart3;
+};
+
+uart1: serial@73fbc000 {
+        compatible = "fsl,imx51-uart", "fsl,imx21-uart";
+        reg = <0x73fbc000 0x4000>;
+        interrupts = <31>;
+        status = "disabled";
+}
+
+- From imx51-babbage.dts:
+uart1: serial@73fbc000 {
+        fsl,uart-has-rtscts;
+        status = "okay";
+};
+