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author | Arnd Bergmann <arnd@arndb.de> | 2011-12-28 00:18:10 +0000 |
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committer | Arnd Bergmann <arnd@arndb.de> | 2011-12-28 00:18:10 +0000 |
commit | bd4b9ba4cf9338932a065cd752fb5f28b26e4e39 (patch) | |
tree | 88725708d3f2696f1c2373cf62d0b997c207e861 /Documentation/devicetree/bindings/dma/arm-pl330.txt | |
parent | Merge branch 'samsung/ohci' into next/drivers (diff) | |
parent | Merge branch 'next-samsung-cleanup-spi4' of git://git.kernel.org/pub/scm/linux/kernel/git/kgene/linux-samsung into samsung/cleanup (diff) | |
download | linux-dev-bd4b9ba4cf9338932a065cd752fb5f28b26e4e39.tar.xz linux-dev-bd4b9ba4cf9338932a065cd752fb5f28b26e4e39.zip |
Merge branch 'samsung/cleanup' into next/drivers
Dependency for the samsung/drivers branch
Conflicts:
arch/arm/mach-exynos/Makefile
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Diffstat (limited to 'Documentation/devicetree/bindings/dma/arm-pl330.txt')
-rw-r--r-- | Documentation/devicetree/bindings/dma/arm-pl330.txt | 30 |
1 files changed, 30 insertions, 0 deletions
diff --git a/Documentation/devicetree/bindings/dma/arm-pl330.txt b/Documentation/devicetree/bindings/dma/arm-pl330.txt new file mode 100644 index 000000000000..a4cd273b2a67 --- /dev/null +++ b/Documentation/devicetree/bindings/dma/arm-pl330.txt @@ -0,0 +1,30 @@ +* ARM PrimeCell PL330 DMA Controller + +The ARM PrimeCell PL330 DMA controller can move blocks of memory contents +between memory and peripherals or memory to memory. + +Required properties: + - compatible: should include both "arm,pl330" and "arm,primecell". + - reg: physical base address of the controller and length of memory mapped + region. + - interrupts: interrupt number to the cpu. + +Example: + + pdma0: pdma@12680000 { + compatible = "arm,pl330", "arm,primecell"; + reg = <0x12680000 0x1000>; + interrupts = <99>; + }; + +Client drivers (device nodes requiring dma transfers from dev-to-mem or +mem-to-dev) should specify the DMA channel numbers using a two-value pair +as shown below. + + [property name] = <[phandle of the dma controller] [dma request id]>; + + where 'dma request id' is the dma request number which is connected + to the client controller. The 'property name' is recommended to be + of the form <name>-dma-channel. + + Example: tx-dma-channel = <&pdma0 12>; |