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| author | Vinod Koul <vkoul@kernel.org> | 2018-12-31 15:02:27 +0100 |
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| committer | Vinod Koul <vkoul@kernel.org> | 2018-12-31 15:02:27 +0100 |
| commit | 69ca36b3d629f1fcdaa9e7abb8b6b2084ff947dd (patch) | |
| tree | 71ca2c76ae26388aa362295b7b7cad3d00bcbf8a /Documentation | |
| parent | Merge branch 'topic/sprd' into for-linus (diff) | |
| parent | dmaengine: uniphier-mdmac: add UniPhier MIO DMAC driver (diff) | |
| download | linux-69ca36b3d629f1fcdaa9e7abb8b6b2084ff947dd.tar.xz linux-69ca36b3d629f1fcdaa9e7abb8b6b2084ff947dd.zip | |
Merge branch 'topic/uniphier' into for-linus
Diffstat (limited to 'Documentation')
| -rw-r--r-- | Documentation/devicetree/bindings/dma/uniphier-mio-dmac.txt | 25 |
1 files changed, 25 insertions, 0 deletions
diff --git a/Documentation/devicetree/bindings/dma/uniphier-mio-dmac.txt b/Documentation/devicetree/bindings/dma/uniphier-mio-dmac.txt new file mode 100644 index 000000000000..b12388dc7eac --- /dev/null +++ b/Documentation/devicetree/bindings/dma/uniphier-mio-dmac.txt @@ -0,0 +1,25 @@ +UniPhier Media IO DMA controller + +This works as an external DMA engine for SD/eMMC controllers etc. +found in UniPhier LD4, Pro4, sLD8 SoCs. + +Required properties: +- compatible: should be "socionext,uniphier-mio-dmac". +- reg: offset and length of the register set for the device. +- interrupts: a list of interrupt specifiers associated with the DMA channels. +- clocks: a single clock specifier. +- #dma-cells: should be <1>. The single cell represents the channel index. + +Example: + dmac: dma-controller@5a000000 { + compatible = "socionext,uniphier-mio-dmac"; + reg = <0x5a000000 0x1000>; + interrupts = <0 68 4>, <0 68 4>, <0 69 4>, <0 70 4>, + <0 71 4>, <0 72 4>, <0 73 4>, <0 74 4>; + clocks = <&mio_clk 7>; + #dma-cells = <1>; + }; + +Note: +In the example above, "interrupts = <0 68 4>, <0 68 4>, ..." is not a typo. +The first two channels share a single interrupt line. |