diff options
| author | Maxime Ripard <maxime.ripard@bootlin.com> | 2019-07-20 11:26:05 +0200 |
|---|---|---|
| committer | Vinod Koul <vkoul@kernel.org> | 2019-07-29 12:18:49 +0530 |
| commit | b37e3534ac4275c1f0d0e08d1b6f672f6cc740c3 (patch) | |
| tree | 5bd323424a2b72154a22d23908d8ac6829e367d8 /Documentation/devicetree/bindings/dma/dma-router.yaml | |
| parent | aa3c6ce4eab8fb0e967954be1ba1cad3b715f63b (diff) | |
dt-bindings: dmaengine: Add YAML schemas for the generic DMA bindings
The DMA controllers and consumers have a bunch of generic properties that
are needed in a device tree. Add a YAML schemas for those.
Signed-off-by: Maxime Ripard <maxime.ripard@bootlin.com>
Reviewed-by: Rob Herring <robh@kernel.org>
Link: https://lore.kernel.org/r/20190720092607.31095-1-maxime.ripard@bootlin.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>
Diffstat (limited to 'Documentation/devicetree/bindings/dma/dma-router.yaml')
| -rw-r--r-- | Documentation/devicetree/bindings/dma/dma-router.yaml | 50 |
1 files changed, 50 insertions, 0 deletions
diff --git a/Documentation/devicetree/bindings/dma/dma-router.yaml b/Documentation/devicetree/bindings/dma/dma-router.yaml new file mode 100644 index 000000000000..5b5f07393135 --- /dev/null +++ b/Documentation/devicetree/bindings/dma/dma-router.yaml @@ -0,0 +1,50 @@ +# SPDX-License-Identifier: GPL-2.0 +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/dma/dma-router.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: DMA Router Generic Binding + +maintainers: + - Vinod Koul <vkoul@kernel.org> + +allOf: + - $ref: "dma-common.yaml#" + +description: + DMA routers are transparent IP blocks used to route DMA request + lines from devices to the DMA controller. Some SoCs (like TI DRA7x) + have more peripherals integrated with DMA requests than what the DMA + controller can handle directly. + +properties: + $nodename: + pattern: "^dma-router(@.*)?$" + + dma-masters: + $ref: /schemas/types.yaml#definitions/phandle-array + description: + Array of phandles to the DMA controllers the router can direct + the signal to. + + dma-requests: + description: + Number of incoming request lines the router can handle. + +required: + - "#dma-cells" + - dma-masters + +examples: + - | + sdma_xbar: dma-router@4a002b78 { + compatible = "ti,dra7-dma-crossbar"; + reg = <0x4a002b78 0xfc>; + #dma-cells = <1>; + dma-requests = <205>; + ti,dma-safe-map = <0>; + dma-masters = <&sdma>; + }; + +... |