| Message ID | 698453fba5198168829a596ec8d58d1f730aaf45.1517454174.git.sean.wang@mediatek.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
On Thu, Feb 01, 2018 at 11:45:23AM +0800, sean.wang@mediatek.com wrote: > From: Sean Wang <sean.wang@mediatek.com> > > Document the devicetree bindings for MediaTek High-Speed DMA controller > which could be found on MT7623 SoC or other similar Mediatek SoCs. > > Signed-off-by: Sean Wang <sean.wang@mediatek.com> > --- > .../devicetree/bindings/dma/mtk-hsdma.txt | 33 ++++++++++++++++++++++ > 1 file changed, 33 insertions(+) > create mode 100644 Documentation/devicetree/bindings/dma/mtk-hsdma.txt > > diff --git a/Documentation/devicetree/bindings/dma/mtk-hsdma.txt b/Documentation/devicetree/bindings/dma/mtk-hsdma.txt > new file mode 100644 > index 0000000..c07c03e > --- /dev/null > +++ b/Documentation/devicetree/bindings/dma/mtk-hsdma.txt > @@ -0,0 +1,33 @@ > +MediaTek High-Speed DMA Controller > +================================== > + > +This driver follows the generic DMA bindings defined in dma/dma.txt. Bindings describe h/w, not drivers. > + > +Required properties: > + > +- compatible: Must be one of > + "mediatek,mt7622-hsdma": for MT7622 SoC > + "mediatek,mt7623-hsdma": for MT7623 SoC > +- reg: Should contain the register's base address and length. > +- interrupts: Should contain a reference to the interrupt used by this > + device. > +- clocks: Should be the clock specifiers corresponding to the entry in > + clock-names property. > +- clock-names: Should contain "hsdma" entries. > +- power-domains: Phandle to the power domain that the device is part of > +- #dma-cells: The length of the DMA specifier, must be <1>. This one cell > + in dmas property of a client device represents the channel > + number. > +Example: > + > + hsdma: hsdma@1b007000 { dma-controller@... > + compatible = "mediatek,mt7623-hsdma"; > + reg = <0 0x1b007000 0 0x1000>; > + interrupts = <GIC_SPI 98 IRQ_TYPE_LEVEL_LOW>; > + clocks = <ðsys CLK_ETHSYS_HSDMA>; > + clock-names = "hsdma"; > + power-domains = <&scpsys MT2701_POWER_DOMAIN_ETH>; > + #dma-cells = <1>; > + }; > + > +DMA clients must use the format described in dma/dma.txt file. > -- > 2.7.4 >
diff --git a/Documentation/devicetree/bindings/dma/mtk-hsdma.txt b/Documentation/devicetree/bindings/dma/mtk-hsdma.txt new file mode 100644 index 0000000..c07c03e --- /dev/null +++ b/Documentation/devicetree/bindings/dma/mtk-hsdma.txt @@ -0,0 +1,33 @@ +MediaTek High-Speed DMA Controller +================================== + +This driver follows the generic DMA bindings defined in dma/dma.txt. + +Required properties: + +- compatible: Must be one of + "mediatek,mt7622-hsdma": for MT7622 SoC + "mediatek,mt7623-hsdma": for MT7623 SoC +- reg: Should contain the register's base address and length. +- interrupts: Should contain a reference to the interrupt used by this + device. +- clocks: Should be the clock specifiers corresponding to the entry in + clock-names property. +- clock-names: Should contain "hsdma" entries. +- power-domains: Phandle to the power domain that the device is part of +- #dma-cells: The length of the DMA specifier, must be <1>. This one cell + in dmas property of a client device represents the channel + number. +Example: + + hsdma: hsdma@1b007000 { + compatible = "mediatek,mt7623-hsdma"; + reg = <0 0x1b007000 0 0x1000>; + interrupts = <GIC_SPI 98 IRQ_TYPE_LEVEL_LOW>; + clocks = <ðsys CLK_ETHSYS_HSDMA>; + clock-names = "hsdma"; + power-domains = <&scpsys MT2701_POWER_DOMAIN_ETH>; + #dma-cells = <1>; + }; + +DMA clients must use the format described in dma/dma.txt file.