| Message ID | 1391546556-27702-3-git-send-email-agross@codeaurora.org (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
On Feb 4, 2014, at 2:42 PM, Andy Gross <agross@codeaurora.org> wrote: > Add device tree binding support for the QCOM BAM DMA driver. > > Signed-off-by: Andy Gross <agross@codeaurora.org> > --- > .../devicetree/bindings/dma/qcom_bam_dma.txt | 48 ++++++++++++++++++++ > 1 file changed, 48 insertions(+) > create mode 100644 Documentation/devicetree/bindings/dma/qcom_bam_dma.txt Acked-by: Kumar Gala <galak@codeaurora.org> - k > > diff --git a/Documentation/devicetree/bindings/dma/qcom_bam_dma.txt b/Documentation/devicetree/bindings/dma/qcom_bam_dma.txt > new file mode 100644 > index 0000000..86344f1 > --- /dev/null > +++ b/Documentation/devicetree/bindings/dma/qcom_bam_dma.txt > @@ -0,0 +1,48 @@ > +QCOM BAM DMA controller > + > +Required properties: > +- compatible: Must be "qcom,bam-v1.4.0" for MSM8974 V1 > + Must be "qcom,bam-v1.4.1" for MSM8974 V2 > +- reg: Address range for DMA registers > +- interrupts: single interrupt for this controller > +- #dma-cells: must be <1> > +- clocks: required clock > +- clock-names: name of clock > +- qcom,ee : indicates the active Execution Environment identifier (0-7) > + > +Example: > + > + uart-bam: dma@f9984000 = { > + compatible = "qcom,bam-v1.4.1"; > + reg = <0xf9984000 0x15000>; > + interrupts = <0 94 0>; > + clocks = <&gcc GCC_BAM_DMA_AHB_CLK>; > + clock-names = "bam_clk"; > + #dma-cells = <1>; > + qcom,ee = <0>; > + }; > + > +Client: > +Required properties: > +- dmas: List of dma channel requests > +- dma-names: Names of aforementioned requested channels > + > +Clients must use the format described in the dma.txt file, using a two cell > +specifier for each channel. > + > +The three cells in order are: > + 1. A phandle pointing to the DMA controller > + 2. The channel number > + > +Example: > + serial@f991e000 { > + compatible = "qcom,msm-uart"; > + reg = <0xf991e000 0x1000> > + <0xf9944000 0x19000>; > + interrupts = <0 108 0>; > + clocks = <&gcc GCC_BLSP1_UART2_APPS_CLK>, <&gcc GCC_BLSP1_AHB_CLK>; > + clock-names = "core", "iface"; > + > + dmas = <&uart-bam 0>, <&uart-bam 1>; > + dma-names = "rx", "tx"; > + }; > -- > The Qualcomm Innovation Center, Inc. is a member of the Code Aurora Forum, > hosted by The Linux Foundation > > -- > To unsubscribe from this list: send the line "unsubscribe linux-arm-msm" 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/qcom_bam_dma.txt b/Documentation/devicetree/bindings/dma/qcom_bam_dma.txt new file mode 100644 index 0000000..86344f1 --- /dev/null +++ b/Documentation/devicetree/bindings/dma/qcom_bam_dma.txt @@ -0,0 +1,48 @@ +QCOM BAM DMA controller + +Required properties: +- compatible: Must be "qcom,bam-v1.4.0" for MSM8974 V1 + Must be "qcom,bam-v1.4.1" for MSM8974 V2 +- reg: Address range for DMA registers +- interrupts: single interrupt for this controller +- #dma-cells: must be <1> +- clocks: required clock +- clock-names: name of clock +- qcom,ee : indicates the active Execution Environment identifier (0-7) + +Example: + + uart-bam: dma@f9984000 = { + compatible = "qcom,bam-v1.4.1"; + reg = <0xf9984000 0x15000>; + interrupts = <0 94 0>; + clocks = <&gcc GCC_BAM_DMA_AHB_CLK>; + clock-names = "bam_clk"; + #dma-cells = <1>; + qcom,ee = <0>; + }; + +Client: +Required properties: +- dmas: List of dma channel requests +- dma-names: Names of aforementioned requested channels + +Clients must use the format described in the dma.txt file, using a two cell +specifier for each channel. + +The three cells in order are: + 1. A phandle pointing to the DMA controller + 2. The channel number + +Example: + serial@f991e000 { + compatible = "qcom,msm-uart"; + reg = <0xf991e000 0x1000> + <0xf9944000 0x19000>; + interrupts = <0 108 0>; + clocks = <&gcc GCC_BLSP1_UART2_APPS_CLK>, <&gcc GCC_BLSP1_AHB_CLK>; + clock-names = "core", "iface"; + + dmas = <&uart-bam 0>, <&uart-bam 1>; + dma-names = "rx", "tx"; + };
Add device tree binding support for the QCOM BAM DMA driver. Signed-off-by: Andy Gross <agross@codeaurora.org> --- .../devicetree/bindings/dma/qcom_bam_dma.txt | 48 ++++++++++++++++++++ 1 file changed, 48 insertions(+) create mode 100644 Documentation/devicetree/bindings/dma/qcom_bam_dma.txt