From e7679db714c356f8e27df2dc3ff721c0d3775448 Mon Sep 17 00:00:00 2001 From: Martin Sperl Date: Mon, 11 Apr 2016 13:29:07 +0000 Subject: [PATCH] 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: Martin Sperl Acked-by: Rob Herring Acked-by: Eric Anholt Acked-by: Mark Rutland Signed-off-by: Vinod Koul --- .../devicetree/bindings/dma/brcm,bcm2835-dma.txt | 26 ++++++++++++++++++++++ 1 file changed, 26 insertions(+) diff --git a/Documentation/devicetree/bindings/dma/brcm,bcm2835-dma.txt b/Documentation/devicetree/bindings/dma/brcm,bcm2835-dma.txt index 1396078..baf9b34 100644 --- a/Documentation/devicetree/bindings/dma/brcm,bcm2835-dma.txt +++ b/Documentation/devicetree/bindings/dma/brcm,bcm2835-dma.txt @@ -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. -- 2.7.4