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| author | Matt Porter <mdp@ti.com> | 2013-06-20 23:06:37 +0200 |
|---|---|---|
| committer | Sekhar Nori <nsekhar@ti.com> | 2013-06-24 10:32:02 +0200 |
| commit | bf3156dde3b6718e843152e826a493f80b973655 (patch) | |
| tree | 463f857fe69de78357d88e46b02c507bc4c91bde /Documentation | |
| parent | ARM: edma: Convert to devm_* api (diff) | |
| download | linux-bf3156dde3b6718e843152e826a493f80b973655.tar.xz linux-bf3156dde3b6718e843152e826a493f80b973655.zip | |
dmaengine: edma: Add TI EDMA device tree binding
The binding definition is based on the generic DMA controller
binding.
Joel:
* Droped reserved and queue DT entries from Documentation
for now from the original patch series (v10)
* Included properties in Documentation and clarified DMA properties (V11)
* Made ti,hwmod option
* Clarified DMA entries
Acked-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Matt Porter <mporter@ti.com>
Signed-off-by: Joel A Fernandes <joelagnel@ti.com>
Signed-off-by: Sekhar Nori <nsekhar@ti.com>
Diffstat (limited to 'Documentation')
| -rw-r--r-- | Documentation/devicetree/bindings/dma/ti-edma.txt | 34 |
1 files changed, 34 insertions, 0 deletions
diff --git a/Documentation/devicetree/bindings/dma/ti-edma.txt b/Documentation/devicetree/bindings/dma/ti-edma.txt new file mode 100644 index 000000000000..9fbbdb783a72 --- /dev/null +++ b/Documentation/devicetree/bindings/dma/ti-edma.txt @@ -0,0 +1,34 @@ +TI EDMA + +Required properties: +- compatible : "ti,edma3" +- ti,edma-regions: Number of regions +- ti,edma-slots: Number of slots +- #dma-cells: Should be set to <1> + Clients should use a single channel number per DMA request. +- dma-channels: Specify total DMA channels per CC +- reg: Memory map for accessing module +- interrupt-parent: Interrupt controller the interrupt is routed through +- interrupts: Exactly 3 interrupts need to be specified in the order: + 1. Transfer completion interrupt. + 2. Memory protection interrupt. + 3. Error interrupt. +Optional properties: +- ti,hwmods: Name of the hwmods associated to the EDMA +- ti,edma-xbar-event-map: Crossbar event to channel map + +Example: + +edma: edma@49000000 { + reg = <0x49000000 0x10000>; + interrupt-parent = <&intc>; + interrupts = <12 13 14>; + compatible = "ti,edma3"; + ti,hwmods = "tpcc", "tptc0", "tptc1", "tptc2"; + #dma-cells = <1>; + dma-channels = <64>; + ti,edma-regions = <4>; + ti,edma-slots = <256>; + ti,edma-xbar-event-map = <1 12 + 2 13>; +}; |