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faadc6e3d5
This adds support for probing the COH 901 318 DMA controller and channels from the device tree. Contains portions of a sketch patch from Arnd Bergmann. Cc: Arnd Bergmann <arnd@arndb.de> Acked-by: Vinod Koul <vinod.koul@intel.com> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
33 lines
768 B
Plaintext
33 lines
768 B
Plaintext
ST-Ericsson COH 901 318 DMA Controller
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This is a DMA controller which has begun as a fork of the
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ARM PL08x PrimeCell VHDL code.
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Required properties:
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- compatible: should be "stericsson,coh901318"
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- reg: register locations and length
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- interrupts: the single DMA IRQ
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- #dma-cells: must be set to <1>, as the channels on the
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COH 901 318 are simple and identified by a single number
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- dma-channels: the number of DMA channels handled
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Example:
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dmac: dma-controller@c00020000 {
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compatible = "stericsson,coh901318";
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reg = <0xc0020000 0x1000>;
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interrupt-parent = <&vica>;
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interrupts = <2>;
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#dma-cells = <1>;
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dma-channels = <40>;
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};
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Consumers example:
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uart0: serial@c0013000 {
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compatible = "...";
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(...)
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dmas = <&dmac 17 &dmac 18>;
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dma-names = "tx", "rx";
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};
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