Add the rt linux 4.1.3-rt3 as base

[kvmfornfv.git] / kernel / Documentation / devicetree / bindings / serial / qcom,msm-uart.txt

diff --git a/kernel/Documentation/devicetree/bindings/serial/qcom,msm-uart.txt b/kernel/Documentation/devicetree/bindings/serial/qcom,msm-uart.txt
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index 0000000..ce8c901
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+++ b/kernel/Documentation/devicetree/bindings/serial/qcom,msm-uart.txt
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+* MSM Serial UART
+
+The MSM serial UART hardware is designed for low-speed use cases where a
+dma-engine isn't needed. From a software perspective it's mostly compatible
+with the MSM serial UARTDM except that it only supports reading and writing one
+character at a time.
+
+Required properties:
+- compatible: Should contain "qcom,msm-uart"
+- reg: Should contain UART register location and length.
+- interrupts: Should contain UART interrupt.
+- clocks: Should contain the core clock.
+- clock-names: Should be "core".
+
+Example:
+
+A uart device at 0xa9c00000 with interrupt 11.
+
+serial@a9c00000 {
+       compatible = "qcom,msm-uart";
+       reg = <0xa9c00000 0x1000>;
+       interrupts = <11>;
+       clocks = <&uart_cxc>;
+       clock-names = "core";
+};