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author | Linus Walleij <linus.walleij@linaro.org> | 2013-04-19 11:42:55 (GMT) |
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committer | Linus Walleij <linus.walleij@linaro.org> | 2013-06-17 11:54:27 (GMT) |
commit | faadc6e3d5e0ab718dc1e131fb14bbb52f144238 (patch) | |
tree | d7ea30a3eb7728c7d2319cf8a143bcd449b1f9be /Documentation | |
parent | ba078d1bd4ec56460c5317287033d97859374d7d (diff) | |
download | linux-fsl-qoriq-faadc6e3d5e0ab718dc1e131fb14bbb52f144238.tar.xz |
dma: coh901318: add devicetree support
This adds support for probing the COH 901 318 DMA controller
and channels from the device tree.
Contains portions of a sketch patch from Arnd Bergmann.
Cc: Arnd Bergmann <arnd@arndb.de>
Acked-by: Vinod Koul <vinod.koul@intel.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Diffstat (limited to 'Documentation')
-rw-r--r-- | Documentation/devicetree/bindings/dma/ste-coh901318.txt | 32 |
1 files changed, 32 insertions, 0 deletions
diff --git a/Documentation/devicetree/bindings/dma/ste-coh901318.txt b/Documentation/devicetree/bindings/dma/ste-coh901318.txt new file mode 100644 index 0000000..091ad05 --- /dev/null +++ b/Documentation/devicetree/bindings/dma/ste-coh901318.txt @@ -0,0 +1,32 @@ +ST-Ericsson COH 901 318 DMA Controller + +This is a DMA controller which has begun as a fork of the +ARM PL08x PrimeCell VHDL code. + +Required properties: +- compatible: should be "stericsson,coh901318" +- reg: register locations and length +- interrupts: the single DMA IRQ +- #dma-cells: must be set to <1>, as the channels on the + COH 901 318 are simple and identified by a single number +- dma-channels: the number of DMA channels handled + +Example: + +dmac: dma-controller@c00020000 { + compatible = "stericsson,coh901318"; + reg = <0xc0020000 0x1000>; + interrupt-parent = <&vica>; + interrupts = <2>; + #dma-cells = <1>; + dma-channels = <40>; +}; + +Consumers example: + +uart0: serial@c0013000 { + compatible = "..."; + (...) + dmas = <&dmac 17 &dmac 18>; + dma-names = "tx", "rx"; +}; |