From: Martin Sperl <kernel@xxxxxxxxxxxxxxxx>
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 <kernel@xxxxxxxxxxxxxxxx>
Acked-by: Rob Herring <robh@xxxxxxxxxx>
Acked-by: Eric Anholt <eric@xxxxxxxxxx>
Acked-by: Mark Rutland <mark.rutland@xxxxxxx>
---
.../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.
--
2.1.4
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