| Message ID | 1485358457-22957-2-git-send-email-Eugeniy.Paltsev@synopsys.com (mailing list archive) |
|---|---|
| State | Changes Requested |
| Headers | show |
On Wed, Jan 25, 2017 at 06:34:16PM +0300, Eugeniy Paltsev wrote: > This patch adds documentation of device tree bindings for the Synopsys > DesignWare AXI DMA controller. > > Signed-off-by: Eugeniy Paltsev <Eugeniy.Paltsev@synopsys.com> > --- > .../devicetree/bindings/dma/snps,axi-dw-dmac.txt | 33 ++++++++++++++++++++++ > 1 file changed, 33 insertions(+) > create mode 100644 Documentation/devicetree/bindings/dma/snps,axi-dw-dmac.txt > > diff --git a/Documentation/devicetree/bindings/dma/snps,axi-dw-dmac.txt b/Documentation/devicetree/bindings/dma/snps,axi-dw-dmac.txt > new file mode 100644 > index 0000000..21318a7 > --- /dev/null > +++ b/Documentation/devicetree/bindings/dma/snps,axi-dw-dmac.txt > @@ -0,0 +1,33 @@ > +* Synopsys DesignWare AXI DMA Controller > + > +Required properties: > +- compatible: "snps,axi-dma" Too generic. This needs an IP version at least. > +- reg: Address range of the DMAC registers. This should include > + all of the per-channel registers. > +- interrupt: Should contain the DMAC interrupt number. > +- interrupt-parent: Should be the phandle for the interrupt controller > + that services interrupts for this device. > +- dma-channels: Number of channels supported by hardware. > +- dma-masters: Number of AXI masters supported by the hardware. > +- data-width: Maximum AXI data width supported by hardware. > + (0 - 8bits, 1 - 16bits, 2 - 32bits, ..., 6 - 512bits) > +- priority: Priority of channel. Array property. Priority value must be > + programmed within [0:dma-channels-1] range. (0 - minimum priority) > +- block-size: Maximum block size supported by the controller channel. Array > + property. Array size equal to the number of dma-channels? Other than dma-channels, all these either need vendor prefix. > + > +Example: > + > +dmac: dmac@80000 { dma-controller@... > + compatible = "snps,axi-dma"; > + reg = <0x80000 0x400>; > + clocks = <&core_clk>; > + interrupt-parent = <&intc>; > + interrupts = <27>; > + > + dma-channels = <4>; > + dma-masters = <2>; > + data-width = <3>; > + block-size = <4096 4096 4096 4096>; > + priority = <0 1 2 3>; > +}; > -- > 2.5.5 > -- To unsubscribe from this list: send the line "unsubscribe dmaengine" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
diff --git a/Documentation/devicetree/bindings/dma/snps,axi-dw-dmac.txt b/Documentation/devicetree/bindings/dma/snps,axi-dw-dmac.txt new file mode 100644 index 0000000..21318a7 --- /dev/null +++ b/Documentation/devicetree/bindings/dma/snps,axi-dw-dmac.txt @@ -0,0 +1,33 @@ +* Synopsys DesignWare AXI DMA Controller + +Required properties: +- compatible: "snps,axi-dma" +- reg: Address range of the DMAC registers. This should include + all of the per-channel registers. +- interrupt: Should contain the DMAC interrupt number. +- interrupt-parent: Should be the phandle for the interrupt controller + that services interrupts for this device. +- dma-channels: Number of channels supported by hardware. +- dma-masters: Number of AXI masters supported by the hardware. +- data-width: Maximum AXI data width supported by hardware. + (0 - 8bits, 1 - 16bits, 2 - 32bits, ..., 6 - 512bits) +- priority: Priority of channel. Array property. Priority value must be + programmed within [0:dma-channels-1] range. (0 - minimum priority) +- block-size: Maximum block size supported by the controller channel. Array + property. + +Example: + +dmac: dmac@80000 { + compatible = "snps,axi-dma"; + reg = <0x80000 0x400>; + clocks = <&core_clk>; + interrupt-parent = <&intc>; + interrupts = <27>; + + dma-channels = <4>; + dma-masters = <2>; + data-width = <3>; + block-size = <4096 4096 4096 4096>; + priority = <0 1 2 3>; +};
This patch adds documentation of device tree bindings for the Synopsys DesignWare AXI DMA controller. Signed-off-by: Eugeniy Paltsev <Eugeniy.Paltsev@synopsys.com> --- .../devicetree/bindings/dma/snps,axi-dw-dmac.txt | 33 ++++++++++++++++++++++ 1 file changed, 33 insertions(+) create mode 100644 Documentation/devicetree/bindings/dma/snps,axi-dw-dmac.txt