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authorVinod Koul <vinod.koul@intel.com>2017-11-14 08:07:07 +0300
committerVinod Koul <vinod.koul@intel.com>2017-11-14 08:07:07 +0300
commitd2045ba3a479ea630991354e1ca5aa98db35634e (patch)
tree574b67db3779c1364151052c676f250b67ada7c5 /Documentation
parent135ab7f53cfb77bd0b215b68eed006c7825ea01e (diff)
parent464aa6f54b093df1ccaff6558207f8bf68a69c37 (diff)
downloadlinux-d2045ba3a479ea630991354e1ca5aa98db35634e.tar.xz
Merge branch 'topic/sun' into for-linus
Diffstat (limited to 'Documentation')
-rw-r--r--Documentation/devicetree/bindings/dma/sun6i-dma.txt26
1 files changed, 26 insertions, 0 deletions
diff --git a/Documentation/devicetree/bindings/dma/sun6i-dma.txt b/Documentation/devicetree/bindings/dma/sun6i-dma.txt
index 98fbe1a5c6dd..9700b1d00fed 100644
--- a/Documentation/devicetree/bindings/dma/sun6i-dma.txt
+++ b/Documentation/devicetree/bindings/dma/sun6i-dma.txt
@@ -27,6 +27,32 @@ Example:
#dma-cells = <1>;
};
+------------------------------------------------------------------------------
+For A64 DMA controller:
+
+Required properties:
+- compatible: "allwinner,sun50i-a64-dma"
+- dma-channels: Number of DMA channels supported by the controller.
+ Refer to Documentation/devicetree/bindings/dma/dma.txt
+- all properties above, i.e. reg, interrupts, clocks, resets and #dma-cells
+
+Optional properties:
+- dma-requests: Number of DMA request signals supported by the controller.
+ Refer to Documentation/devicetree/bindings/dma/dma.txt
+
+Example:
+ dma: dma-controller@1c02000 {
+ compatible = "allwinner,sun50i-a64-dma";
+ reg = <0x01c02000 0x1000>;
+ interrupts = <GIC_SPI 50 IRQ_TYPE_LEVEL_HIGH>;
+ clocks = <&ccu CLK_BUS_DMA>;
+ dma-channels = <8>;
+ dma-requests = <27>;
+ resets = <&ccu RST_BUS_DMA>;
+ #dma-cells = <1>;
+ };
+------------------------------------------------------------------------------
+
Clients:
DMA clients connected to the A31 DMA controller must use the format