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dt-bindings: arm64: allwinner: h6: Add binding for DMA controller

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DMA in H6 is similar to other DMA controller, except it is first which
supports more than 32 request sources and has 16 channels. It also needs
additional clock to be enabled.

Signed-off-by: Jernej Skrabec <jernej.skrabec@siol.net>
Reviewed-by: Rob Herring <robh@kernel.org>
Signed-off-by: Clément Péron <peron.clem@gmail.com>
Acked-by: Maxime Ripard <maxime.ripard@bootlin.com>
Signed-off-by: Vinod Koul <vkoul@kernel.org>
This commit is contained in:
Jernej Skrabec 2019-05-27 22:14:53 +02:00 committed by Vinod Koul
parent dc161064be
commit f48d14c218
1 changed files with 7 additions and 2 deletions
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9
Documentation/devicetree/bindings/dma/sun6i-dma.txt
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@ -28,12 +28,17 @@ Example:
}; };
------------------------------------------------------------------------------ ------------------------------------------------------------------------------
For A64 DMA controller: For A64 and H6 DMA controller:
Required properties: Required properties:
- compatible: "allwinner,sun50i-a64-dma" - compatible: Must be one of
"allwinner,sun50i-a64-dma"
"allwinner,sun50i-h6-dma"
- dma-channels: Number of DMA channels supported by the controller. - dma-channels: Number of DMA channels supported by the controller.
Refer to Documentation/devicetree/bindings/dma/dma.txt Refer to Documentation/devicetree/bindings/dma/dma.txt
- clocks: In addition to parent AHB clock, it should also contain mbus
clock (H6 only)
- clock-names: Should contain "bus" and "mbus" (H6 only)
- all properties above, i.e. reg, interrupts, clocks, resets and #dma-cells - all properties above, i.e. reg, interrupts, clocks, resets and #dma-cells
Optional properties: Optional properties: