Add the rt linux 4.1.3-rt3 as base

[kvmfornfv.git] / kernel / Documentation / devicetree / bindings / dma / ste-coh901318.txt

diff --git a/kernel/Documentation/devicetree/bindings/dma/ste-coh901318.txt b/kernel/Documentation/devicetree/bindings/dma/ste-coh901318.txt
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+ST-Ericsson COH 901 318 DMA Controller
+
+This is a DMA controller which has begun as a fork of the
+ARM PL08x PrimeCell VHDL code.
+
+Required properties:
+- compatible: should be "stericsson,coh901318"
+- reg: register locations and length
+- interrupts: the single DMA IRQ
+- #dma-cells: must be set to <1>, as the channels on the
+  COH 901 318 are simple and identified by a single number
+- dma-channels: the number of DMA channels handled
+
+Example:
+
+dmac: dma-controller@c00020000 {
+       compatible = "stericsson,coh901318";
+       reg = <0xc0020000 0x1000>;
+       interrupt-parent = <&vica>;
+       interrupts = <2>;
+       #dma-cells = <1>;
+       dma-channels = <40>;
+};
+
+Consumers example:
+
+uart0: serial@c0013000 {
+       compatible = "...";
+       (...)
+       dmas = <&dmac 17 &dmac 18>;
+       dma-names = "tx", "rx";
+};