| Message ID | 63f2b93b3e484862f736e37d6d422b5566637163.1500361078.git.baolin.wang@spreadtrum.com (mailing list archive) |
|---|---|
| State | Changes Requested |
| Headers | show |
On Tue, Jul 18, 2017 at 03:06:11PM +0800, Baolin Wang wrote: > This patch adds the binding documentation for Spreadtrum SC9860 DMA > controller device. > > Signed-off-by: Baolin Wang <baolin.wang@spreadtrum.com> > --- > Documentation/devicetree/bindings/dma/sprd-dma.txt | 41 ++++++++++++++++++++ > 1 file changed, 41 insertions(+) > create mode 100644 Documentation/devicetree/bindings/dma/sprd-dma.txt > > diff --git a/Documentation/devicetree/bindings/dma/sprd-dma.txt b/Documentation/devicetree/bindings/dma/sprd-dma.txt > new file mode 100644 > index 0000000..3ccf776 > --- /dev/null > +++ b/Documentation/devicetree/bindings/dma/sprd-dma.txt > @@ -0,0 +1,41 @@ > +* Spreadtrum DMA controller > + > +This driver follows the generic DMA bindings defined in dma.txt. s/driver/binding/ With that, Acked-by: Rob Herring <robh@kernel.org> -- 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
On 25 July 2017 at 01:52, Rob Herring <robh@kernel.org> wrote: > On Tue, Jul 18, 2017 at 03:06:11PM +0800, Baolin Wang wrote: >> This patch adds the binding documentation for Spreadtrum SC9860 DMA >> controller device. >> >> Signed-off-by: Baolin Wang <baolin.wang@spreadtrum.com> >> --- >> Documentation/devicetree/bindings/dma/sprd-dma.txt | 41 ++++++++++++++++++++ >> 1 file changed, 41 insertions(+) >> create mode 100644 Documentation/devicetree/bindings/dma/sprd-dma.txt >> >> diff --git a/Documentation/devicetree/bindings/dma/sprd-dma.txt b/Documentation/devicetree/bindings/dma/sprd-dma.txt >> new file mode 100644 >> index 0000000..3ccf776 >> --- /dev/null >> +++ b/Documentation/devicetree/bindings/dma/sprd-dma.txt >> @@ -0,0 +1,41 @@ >> +* Spreadtrum DMA controller >> + >> +This driver follows the generic DMA bindings defined in dma.txt. > > s/driver/binding/ > > With that, > > Acked-by: Rob Herring <robh@kernel.org> Will fix this in next version. Thanks Rob.
diff --git a/Documentation/devicetree/bindings/dma/sprd-dma.txt b/Documentation/devicetree/bindings/dma/sprd-dma.txt new file mode 100644 index 0000000..3ccf776 --- /dev/null +++ b/Documentation/devicetree/bindings/dma/sprd-dma.txt @@ -0,0 +1,41 @@ +* Spreadtrum DMA controller + +This driver follows the generic DMA bindings defined in dma.txt. + +Required properties: +- compatible: Should be "sprd,sc9860-dma". +- reg: Should contain DMA registers location and length. +- interrupts: Should contain one interrupt shared by all channel. +- #dma-cells: must be <1>. Used to represent the number of integer + cells in the dmas property of client device. +- #dma-channels : Number of DMA channels supported. Should be 32. +- clock-names: Should contain the clock of the DMA controller. +- clocks: Should contain a clock specifier for each entry in clock-names. + +Example: + +Controller: +apdma: dma-controller@20100000 { + compatible = "sprd,sc9860-dma"; + reg = <0x20100000 0x4000>; + interrupts = <GIC_SPI 50 IRQ_TYPE_LEVEL_HIGH>; + #dma-cells = <1>; + #dma-channels = <32>; + clock-names = "enable"; + clocks = <&clk_ap_ahb_gates 5>; +}; + + +Client: +DMA clients connected to the Spreadtrum DMA controller must use the format +described in the dma.txt file, using a two-cell specifier for each channel. +The two cells in order are: +1. A phandle pointing to the DMA controller. +2. The channel id. + +spi0: spi@70a00000{ + ... + dma-names = "rx_chn", "tx_chn"; + dmas = <&apdma 11>, <&apdma 12>; + ... +};
This patch adds the binding documentation for Spreadtrum SC9860 DMA controller device. Signed-off-by: Baolin Wang <baolin.wang@spreadtrum.com> --- Documentation/devicetree/bindings/dma/sprd-dma.txt | 41 ++++++++++++++++++++ 1 file changed, 41 insertions(+) create mode 100644 Documentation/devicetree/bindings/dma/sprd-dma.txt