Add the rt linux 4.1.3-rt3 as base

[kvmfornfv.git] / kernel / Documentation / devicetree / bindings / serial / qca,ar9330-uart.txt

diff --git a/kernel/Documentation/devicetree/bindings/serial/qca,ar9330-uart.txt b/kernel/Documentation/devicetree/bindings/serial/qca,ar9330-uart.txt
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+++ b/kernel/Documentation/devicetree/bindings/serial/qca,ar9330-uart.txt
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+* Qualcomm Atheros AR9330 High-Speed UART
+
+Required properties:
+
+- compatible: Must be "qca,ar9330-uart"
+
+- reg: Specifies the physical base address of the controller and
+  the length of the memory mapped region.
+
+- interrupt-parent: The phandle for the interrupt controller that
+  services interrupts for this device.
+
+- interrupts: Specifies the interrupt source of the parent interrupt
+  controller. The format of the interrupt specifier depends on the
+  parent interrupt controller.
+
+Additional requirements:
+
+  Each UART port must have an alias correctly numbered in "aliases"
+  node.
+
+Example:
+
+       aliases {
+               serial0 = &uart0;
+       };
+
+       uart0: uart@18020000 {
+               compatible = "qca,ar9330-uart";
+               reg = <0x18020000 0x14>;
+
+               interrupt-parent = <&intc>;
+               interrupts = <3>;
+       };