| Message ID | 20180723041743.32024-2-manivannan.sadhasivam@linaro.org |
|---|---|
| State | New |
| Headers | show |
| Series | Add Actions Semi Owl family S900 DMA Controller support | expand |
Hi Mani, Patch title should be dmaengine: ... Please always use the apt tags and one can find them using git log <subsystem> On 23-07-18, 09:47, Manivannan Sadhasivam wrote: > Add devicetree binding for Actions Semi Owl SoCs DMA controller. It would help for review to describe the controller here > > Signed-off-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org> > --- > .../devicetree/bindings/dma/owl-dma.txt | 46 +++++++++++++++++++ > 1 file changed, 46 insertions(+) > create mode 100644 Documentation/devicetree/bindings/dma/owl-dma.txt > > diff --git a/Documentation/devicetree/bindings/dma/owl-dma.txt b/Documentation/devicetree/bindings/dma/owl-dma.txt > new file mode 100644 > index 000000000000..dd6ce237b216 > --- /dev/null > +++ b/Documentation/devicetree/bindings/dma/owl-dma.txt > @@ -0,0 +1,46 @@ > +* Actions Semi Owl SoCs DMA controller > + > +This binding follows the generic DMA bindings defined in dma.txt. > + > +Required properties: > +- compatible: Should be "actions,s900-dma". > +- reg: Should contain DMA registers location and length. > +- interrupts: Should contain 4 interrupts 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: Physical channels supported. > +- dma-requests: Virtual channels supported. not really, virtual channel is a software concepts. On the other hand you may have request lines in hw and you can describe that, if not skip this one > +- clocks: Phandle and Specifier of the clock feeding the DMA controller. > + > +Example: > + > +Controller: > + dma: dma-controller@e0260000 { > + compatible = "actions,s900-dma"; > + reg = <0x0 0xe0260000 0x0 0x1000>; > + interrupts = <GIC_SPI 57 IRQ_TYPE_LEVEL_HIGH>, > + <GIC_SPI 58 IRQ_TYPE_LEVEL_HIGH>, > + <GIC_SPI 59 IRQ_TYPE_LEVEL_HIGH>, > + <GIC_SPI 60 IRQ_TYPE_LEVEL_HIGH>; > + #dma-cells = <1>; > + dma-channels = <12>; > + dma-requests = <46>; > + clocks = <&clock CLK_DMAC>; > + }; > + > +Client: > + > +DMA clients connected to the Actions Semi Owl SoCs 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. > + > +uart5: serial@e012a000 { > + ... > + dma-names = "tx", "rx"; > + dmas = <&dma 26>, <&dma 27>; > + ... > +}; > -- > 2.17.1 -- ~Vinod -- 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
Hi Vinod, Am 24.07.2018 um 14:16 schrieb Vinod: > Patch title should be dmaengine: ... Please always use the apt tags and > one can find them using git log <subsystem> Do you mean dt-bindings: dmaengine: ...? Because this is clearly a DT binding and not a driver patch. Regards, Andreas -- SUSE Linux GmbH, Maxfeldstr. 5, 90409 Nürnberg, Germany GF: Felix Imendörffer, Jane Smithard, Graham Norton HRB 21284 (AG Nürnberg) -- 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 24-07-18, 14:19, Andreas Färber wrote: > Hi Vinod, > > Am 24.07.2018 um 14:16 schrieb Vinod: > > Patch title should be dmaengine: ... Please always use the apt tags and > > one can find them using git log <subsystem> > > Do you mean dt-bindings: dmaengine: ...? Because this is clearly a DT > binding and not a driver patch. for the driver patch :) -- ~Vinod -- 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
Hi Vinod, On Tue, Jul 24, 2018 at 05:46:04PM +0530, Vinod wrote: > Hi Mani, > > Patch title should be dmaengine: ... Please always use the apt tags and > one can find them using git log <subsystem> > Did you mean, dt-bindings: dmaengine? If yes, then I will use it for the future patches. > On 23-07-18, 09:47, Manivannan Sadhasivam wrote: > > Add devicetree binding for Actions Semi Owl SoCs DMA controller. > > > It would help for review to describe the controller here > Okay. > > > > Signed-off-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org> > > --- > > .../devicetree/bindings/dma/owl-dma.txt | 46 +++++++++++++++++++ > > 1 file changed, 46 insertions(+) > > create mode 100644 Documentation/devicetree/bindings/dma/owl-dma.txt > > > > diff --git a/Documentation/devicetree/bindings/dma/owl-dma.txt b/Documentation/devicetree/bindings/dma/owl-dma.txt > > new file mode 100644 > > index 000000000000..dd6ce237b216 > > --- /dev/null > > +++ b/Documentation/devicetree/bindings/dma/owl-dma.txt > > @@ -0,0 +1,46 @@ > > +* Actions Semi Owl SoCs DMA controller > > + > > +This binding follows the generic DMA bindings defined in dma.txt. > > + > > +Required properties: > > +- compatible: Should be "actions,s900-dma". > > +- reg: Should contain DMA registers location and length. > > +- interrupts: Should contain 4 interrupts 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: Physical channels supported. > > +- dma-requests: Virtual channels supported. > > not really, virtual channel is a software concepts. On the other hand > you may have request lines in hw and you can describe that, if not skip > this one > Okay. Will change the property description to request signals. Thanks, Mani > > +- clocks: Phandle and Specifier of the clock feeding the DMA controller. > > + > > +Example: > > + > > +Controller: > > + dma: dma-controller@e0260000 { > > + compatible = "actions,s900-dma"; > > + reg = <0x0 0xe0260000 0x0 0x1000>; > > + interrupts = <GIC_SPI 57 IRQ_TYPE_LEVEL_HIGH>, > > + <GIC_SPI 58 IRQ_TYPE_LEVEL_HIGH>, > > + <GIC_SPI 59 IRQ_TYPE_LEVEL_HIGH>, > > + <GIC_SPI 60 IRQ_TYPE_LEVEL_HIGH>; > > + #dma-cells = <1>; > > + dma-channels = <12>; > > + dma-requests = <46>; > > + clocks = <&clock CLK_DMAC>; > > + }; > > + > > +Client: > > + > > +DMA clients connected to the Actions Semi Owl SoCs 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. > > + > > +uart5: serial@e012a000 { > > + ... > > + dma-names = "tx", "rx"; > > + dmas = <&dma 26>, <&dma 27>; > > + ... > > +}; > > -- > > 2.17.1 > > -- > ~Vinod -- 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/owl-dma.txt b/Documentation/devicetree/bindings/dma/owl-dma.txt new file mode 100644 index 000000000000..dd6ce237b216 --- /dev/null +++ b/Documentation/devicetree/bindings/dma/owl-dma.txt @@ -0,0 +1,46 @@ +* Actions Semi Owl SoCs DMA controller + +This binding follows the generic DMA bindings defined in dma.txt. + +Required properties: +- compatible: Should be "actions,s900-dma". +- reg: Should contain DMA registers location and length. +- interrupts: Should contain 4 interrupts 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: Physical channels supported. +- dma-requests: Virtual channels supported. +- clocks: Phandle and Specifier of the clock feeding the DMA controller. + +Example: + +Controller: + dma: dma-controller@e0260000 { + compatible = "actions,s900-dma"; + reg = <0x0 0xe0260000 0x0 0x1000>; + interrupts = <GIC_SPI 57 IRQ_TYPE_LEVEL_HIGH>, + <GIC_SPI 58 IRQ_TYPE_LEVEL_HIGH>, + <GIC_SPI 59 IRQ_TYPE_LEVEL_HIGH>, + <GIC_SPI 60 IRQ_TYPE_LEVEL_HIGH>; + #dma-cells = <1>; + dma-channels = <12>; + dma-requests = <46>; + clocks = <&clock CLK_DMAC>; + }; + +Client: + +DMA clients connected to the Actions Semi Owl SoCs 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. + +uart5: serial@e012a000 { + ... + dma-names = "tx", "rx"; + dmas = <&dma 26>, <&dma 27>; + ... +};
Add devicetree binding for Actions Semi Owl SoCs DMA controller. Signed-off-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org> --- .../devicetree/bindings/dma/owl-dma.txt | 46 +++++++++++++++++++ 1 file changed, 46 insertions(+) create mode 100644 Documentation/devicetree/bindings/dma/owl-dma.txt -- 2.17.1 -- To unsubscribe from this list: send the line "unsubscribe devicetree" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html