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dt-bindings: dma: uart: add uart dma bindings

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add uart dma bindings

Signed-off-by: Long Cheng <long.cheng@mediatek.com>
Reviewed-by: Rob Herring <robh@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Long Cheng 2018-12-05 16:42:57 +08:00 committed by Greg Kroah-Hartman
parent eca42d4cf3
commit 89212465c1
1 changed files with 33 additions and 0 deletions
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33
Documentation/devicetree/bindings/dma/8250_mtk_dma.txt Normal file
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* Mediatek UART APDMA Controller
Required properties:
- compatible should contain:
* "mediatek,mt2712-uart-dma" for MT2712 compatible APDMA
* "mediatek,mt6577-uart-dma" for MT6577 and all of the above
- reg: The base address of the APDMA register bank.
- interrupts: A single interrupt specifier.
- clocks : Must contain an entry for each entry in clock-names.
See ../clocks/clock-bindings.txt for details.
- clock-names: The APDMA clock for register accesses
Examples:
apdma: dma-controller@11000380 {
compatible = "mediatek,mt2712-uart-dma";
reg = <0 0x11000380 0 0x400>;
interrupts = <GIC_SPI 63 IRQ_TYPE_LEVEL_LOW>,
<GIC_SPI 64 IRQ_TYPE_LEVEL_LOW>,
<GIC_SPI 65 IRQ_TYPE_LEVEL_LOW>,
<GIC_SPI 66 IRQ_TYPE_LEVEL_LOW>,
<GIC_SPI 67 IRQ_TYPE_LEVEL_LOW>,
<GIC_SPI 68 IRQ_TYPE_LEVEL_LOW>,
<GIC_SPI 69 IRQ_TYPE_LEVEL_LOW>,
<GIC_SPI 70 IRQ_TYPE_LEVEL_LOW>;
clocks = <&pericfg CLK_PERI_AP_DMA>;
clock-names = "apdma";
#dma-cells = <1>;
};