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304a39b4bc
Whack-a-mole some more occurrences of status in examples. Acked-by: Vinod Koul <vinod.koul@intel.com> Cc: Mark Rutland <mark.rutland@arm.com> Cc: Ralf Baechle <ralf@linux-mips.org> Cc: James Hogan <jhogan@kernel.org> Cc: Ulf Hansson <ulf.hansson@linaro.org> Cc: David Woodhouse <dwmw2@infradead.org> Cc: Brian Norris <computersforpeace@gmail.com> Cc: Boris Brezillon <boris.brezillon@bootlin.com> Cc: Marek Vasut <marek.vasut@gmail.com> Cc: Richard Weinberger <richard@nod.at> Cc: Matthias Brugger <matthias.bgg@gmail.com> Cc: Tanmay Inamdar <tinamdar@apm.com> Cc: Bjorn Helgaas <bhelgaas@google.com> Cc: Rodolfo Giometti <giometti@enneenne.com> Signed-off-by: Rob Herring <robh@kernel.org>
46 lines
1.2 KiB
Plaintext
46 lines
1.2 KiB
Plaintext
* Hisilicon K3 DMA controller
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See dma.txt first
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Required properties:
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- compatible: Should be "hisilicon,k3-dma-1.0"
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- reg: Should contain DMA registers location and length.
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- interrupts: Should contain one interrupt shared by all channel
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- #dma-cells: see dma.txt, should be 1, para number
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- dma-channels: physical channels supported
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- dma-requests: virtual channels supported, each virtual channel
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have specific request line
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- clocks: clock required
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Example:
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Controller:
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dma0: dma@fcd02000 {
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compatible = "hisilicon,k3-dma-1.0";
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reg = <0xfcd02000 0x1000>;
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#dma-cells = <1>;
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dma-channels = <16>;
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dma-requests = <27>;
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interrupts = <0 12 4>;
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clocks = <&pclk>;
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};
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Client:
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Use specific request line passing from dmax
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For example, i2c0 read channel request line is 18, while write channel use 19
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i2c0: i2c@fcb08000 {
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compatible = "snps,designware-i2c";
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dmas = <&dma0 18 /* read channel */
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&dma0 19>; /* write channel */
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dma-names = "rx", "tx";
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};
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i2c1: i2c@fcb09000 {
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compatible = "snps,designware-i2c";
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dmas = <&dma0 20 /* read channel */
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&dma0 21>; /* write channel */
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dma-names = "rx", "tx";
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};
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