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Commit e7679db7 authored by Martin Sperl's avatar Martin Sperl Committed by Vinod Koul
Browse files

dt/bindings: bcm2835: add interrupt-names property 



Added standard interrupt-names property so that
platform_get_irq_byname() can get used to fetch the
interrupt corresponding to each dma_channel
instead of the current platform_get_irq() with
an assumed ordering of the interrupts.

Signed-off-by: default avatarMartin Sperl <kernel@martin.sperl.org>
Acked-by: default avatarRob Herring <robh@kernel.org>
Acked-by: default avatarEric Anholt <eric@anholt.net>
Acked-by: default avatarMark Rutland <mark.rutland@arm.com>
Signed-off-by: default avatarVinod Koul <vinod.koul@intel.com>
parent d9f094a0

Documentation/devicetree/bindings/dma/brcm,bcm2835-dma.txt

+26 −0
Original line number Diff line number Diff line
@@ -12,6 +12,10 @@ Required properties: 
- reg: Should contain DMA registers location and length.

- interrupts: Should contain the DMA interrupts associated

		to the DMA channels in ascending order.

- interrupt-names: Should contain the names of the interrupt

		   in the form "dmaXX".

		   Use "dma-shared-all" for the common interrupt line

		   that is shared by all dma channels.

- #dma-cells: Must be <1>, the cell in the dmas property of the

		client device represents the DREQ number.

- brcm,dma-channel-mask: Bit mask representing the channels
@@ -34,13 +38,35 @@ dma: dma@7e007000 { 
		     <1 24>,

		     <1 25>,

		     <1 26>,

		     /* dma channel 11-14 share one irq */

		     <1 27>,

		     <1 27>,

		     <1 27>,

		     <1 27>,

		     /* unused shared irq for all channels */

		     <1 28>;

	interrupt-names = "dma0",

			  "dma1",

			  "dma2",

			  "dma3",

			  "dma4",

			  "dma5",

			  "dma6",

			  "dma7",

			  "dma8",

			  "dma9",

			  "dma10",

			  "dma11",

			  "dma12",

			  "dma13",

			  "dma14",

			  "dma-shared-all";



	#dma-cells = <1>;

	brcm,dma-channel-mask = <0x7f35>;

};





DMA clients connected to the BCM2835 DMA controller must use the format

described in the dma.txt file, using a two-cell specifier for each channel.