dmaengine: edma: Add TI EDMA device tree binding (bf3156dd) · Commits · 戴 / test

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>

Documentation/devicetree/bindings/dma/ti-edma.txt

0 → 100644

+34 −0

Original line number	Diff line number	Diff line
		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>;
		};

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