Commit f30fb03d authored by Shawn Guo's avatar Shawn Guo
Browse files

ARM: dts: add generic DMA device tree binding for mxs-dma 



Add generic DMA device tree binding for mxs-dma.  The changes include:

 * Add channel interrupts into DMA controller nodes
 * Add properties '#dma-cells' and 'dma-channels' for DMA controller nodes
 * And properties 'dmas' and 'dma-names' for DMA client nodes
 * Update mxs-dma device tree binding doc

Signed-off-by: default avatarShawn Guo <shawn.guo@linaro.org>
Reviewed-by: default avatarArnd Bergmann <arnd@arndb.de>
parent d8880a12

Documentation/devicetree/bindings/dma/fsl-mxs-dma.txt

+45 −4
Original line number Diff line number Diff line
@@ -3,17 +3,58 @@ 
Required properties:

- compatible : Should be "fsl,<chip>-dma-apbh" or "fsl,<chip>-dma-apbx"

- reg : Should contain registers location and length

- interrupts : Should contain the interrupt numbers of DMA channels.

  If a channel is empty/reserved, 0 should be filled in place.

- #dma-cells : Must be <1>.  The number cell specifies the channel ID.

- dma-channels : Number of channels supported by the DMA controller



Optional properties:

- interrupt-names : Name of DMA channel interrupts



Supported chips:

imx23, imx28.



Examples:

dma-apbh@80004000 {



dma_apbh: dma-apbh@80004000 {

	compatible = "fsl,imx28-dma-apbh";

	reg = <0x80004000 2000>;

	reg = <0x80004000 0x2000>;

	interrupts = <82 83 84 85

		      88 88 88 88

		      88 88 88 88

		      87 86 0 0>;

	interrupt-names = "ssp0", "ssp1", "ssp2", "ssp3",

			  "gpmi0", "gmpi1", "gpmi2", "gmpi3",

			  "gpmi4", "gmpi5", "gpmi6", "gmpi7",

			  "hsadc", "lcdif", "empty", "empty";

	#dma-cells = <1>;

	dma-channels = <16>;

};



dma-apbx@80024000 {

dma_apbx: dma-apbx@80024000 {

	compatible = "fsl,imx28-dma-apbx";

	reg = <0x80024000 2000>;

	reg = <0x80024000 0x2000>;

	interrupts = <78 79 66 0

		      80 81 68 69

		      70 71 72 73

		      74 75 76 77>;

	interrupt-names = "auart4-rx", "aurat4-tx", "spdif-tx", "empty",

			  "saif0", "saif1", "i2c0", "i2c1",

			  "auart0-rx", "auart0-tx", "auart1-rx", "auart1-tx",

			  "auart2-rx", "auart2-tx", "auart3-rx", "auart3-tx";

	#dma-cells = <1>;

	dma-channels = <16>;

};



DMA clients connected to the MXS DMA controller must use the format

described in the dma.txt file.



Examples:



auart0: serial@8006a000 {

	compatible = "fsl,imx28-auart", "fsl,imx23-auart";

	reg = <0x8006a000 0x2000>;

	interrupts = <112>;

	dmas = <&dma_apbx 8>, <&dma_apbx 9>;

	dma-names = "rx", "tx";

};

arch/arm/boot/dts/imx23.dtsi

+40 −2
Original line number Diff line number Diff line
@@ -49,9 +49,15 @@ 
				reg = <0x80000000 0x2000>;

			};



			dma-apbh@80004000 {

			dma_apbh: dma-apbh@80004000 {

				compatible = "fsl,imx23-dma-apbh";

				reg = <0x80004000 0x2000>;

				interrupts = <0 14 20 0

					      13 13 13 13>;

				interrupt-names = "empty", "ssp0", "ssp1", "empty",

						  "gpmi0", "gpmi1", "gpmi2", "gpmi3";

				#dma-cells = <1>;

				dma-channels = <8>;

				clocks = <&clks 15>;

			};
@@ -70,6 +76,8 @@ 
				interrupt-names = "gpmi-dma", "bch";

				clocks = <&clks 34>;

				clock-names = "gpmi_io";

				dmas = <&dma_apbh 4>;

				dma-names = "rx-tx";

				fsl,gpmi-dma-channel = <4>;

				status = "disabled";

			};
@@ -78,6 +86,8 @@ 
				reg = <0x80010000 0x2000>;

				interrupts = <15 14>;

				clocks = <&clks 33>;

				dmas = <&dma_apbh 1>;

				dma-names = "rx-tx";

				fsl,ssp-dma-channel = <1>;

				status = "disabled";

			};
@@ -305,9 +315,19 @@ 
				status = "disabled";

			};



			dma-apbx@80024000 {

			dma_apbx: dma-apbx@80024000 {

				compatible = "fsl,imx23-dma-apbx";

				reg = <0x80024000 0x2000>;

				interrupts = <7 5 9 26

					      19 0 25 23

					      60 58 9 0

					      0 0 0 0>;

				interrupt-names = "audio-adc", "audio-dac", "spdif-tx", "i2c",

						  "saif0", "empty", "auart0-rx", "auart0-tx",

						  "auart1-rx", "auart1-tx", "saif1", "empty",

						  "empty", "empty", "empty", "empty";

				#dma-cells = <1>;

				dma-channels = <16>;

				clocks = <&clks 16>;

			};
@@ -344,6 +364,8 @@ 
				reg = <0x80034000 0x2000>;

				interrupts = <2 20>;

				clocks = <&clks 33>;

				dmas = <&dma_apbh 2>;

				dma-names = "rx-tx";

				fsl,ssp-dma-channel = <2>;

				status = "disabled";

			};
@@ -369,6 +391,8 @@ 


			saif0: saif@80042000 {

				reg = <0x80042000 0x2000>;

				dmas = <&dma_apbx 4>;

				dma-names = "rx-tx";

				status = "disabled";

			};
@@ -379,16 +403,22 @@ 


			saif1: saif@80046000 {

				reg = <0x80046000 0x2000>;

				dmas = <&dma_apbx 10>;

				dma-names = "rx-tx";

				status = "disabled";

			};



			audio-out@80048000 {

				reg = <0x80048000 0x2000>;

				dmas = <&dma_apbx 1>;

				dma-names = "tx";

				status = "disabled";

			};



			audio-in@8004c000 {

				reg = <0x8004c000 0x2000>;

				dmas = <&dma_apbx 0>;

				dma-names = "rx";

				status = "disabled";

			};
@@ -401,11 +431,15 @@ 


			spdif@80054000 {

				reg = <0x80054000 2000>;

				dmas = <&dma_apbx 2>;

				dma-names = "tx";

				status = "disabled";

			};



			i2c@80058000 {

				reg = <0x80058000 0x2000>;

				dmas = <&dma_apbx 3>;

				dma-names = "rx-tx";

				status = "disabled";

			};
@@ -436,6 +470,8 @@ 
				reg = <0x8006c000 0x2000>;

				interrupts = <24 25 23>;

				clocks = <&clks 32>;

				dmas = <&dma_apbx 6>, <&dma_apbx 7>;

				dma-names = "rx", "tx";

				status = "disabled";

			};
@@ -444,6 +480,8 @@ 
				reg = <0x8006e000 0x2000>;

				interrupts = <59 60 58>;

				clocks = <&clks 32>;

				dmas = <&dma_apbx 8>, <&dma_apbx 9>;

				dma-names = "rx", "tx";

				status = "disabled";

			};

arch/arm/boot/dts/imx28.dtsi

+56 −2
Original line number Diff line number Diff line
@@ -61,12 +61,24 @@ 
			hsadc@80002000 {

				reg = <0x80002000 0x2000>;

				interrupts = <13 87>;

				dmas = <&dma_apbh 12>;

				dma-names = "rx";

				status = "disabled";

			};



			dma-apbh@80004000 {

			dma_apbh: dma-apbh@80004000 {

				compatible = "fsl,imx28-dma-apbh";

				reg = <0x80004000 0x2000>;

				interrupts = <82 83 84 85

					      88 88 88 88

					      88 88 88 88

					      87 86 0 0>;

				interrupt-names = "ssp0", "ssp1", "ssp2", "ssp3",

						  "gpmi0", "gmpi1", "gpmi2", "gmpi3",

						  "gpmi4", "gmpi5", "gpmi6", "gmpi7",

						  "hsadc", "lcdif", "empty", "empty";

				#dma-cells = <1>;

				dma-channels = <16>;

				clocks = <&clks 25>;

			};
@@ -86,6 +98,8 @@ 
				interrupt-names = "gpmi-dma", "bch";

				clocks = <&clks 50>;

				clock-names = "gpmi_io";

				dmas = <&dma_apbh 4>;

				dma-names = "rx-tx";

				fsl,gpmi-dma-channel = <4>;

				status = "disabled";

			};
@@ -96,6 +110,8 @@ 
				reg = <0x80010000 0x2000>;

				interrupts = <96 82>;

				clocks = <&clks 46>;

				dmas = <&dma_apbh 0>;

				dma-names = "rx-tx";

				fsl,ssp-dma-channel = <0>;

				status = "disabled";

			};
@@ -106,6 +122,8 @@ 
				reg = <0x80012000 0x2000>;

				interrupts = <97 83>;

				clocks = <&clks 47>;

				dmas = <&dma_apbh 1>;

				dma-names = "rx-tx";

				fsl,ssp-dma-channel = <1>;

				status = "disabled";

			};
@@ -116,6 +134,8 @@ 
				reg = <0x80014000 0x2000>;

				interrupts = <98 84>;

				clocks = <&clks 48>;

				dmas = <&dma_apbh 2>;

				dma-names = "rx-tx";

				fsl,ssp-dma-channel = <2>;

				status = "disabled";

			};
@@ -126,6 +146,8 @@ 
				reg = <0x80016000 0x2000>;

				interrupts = <99 85>;

				clocks = <&clks 49>;

				dmas = <&dma_apbh 3>;

				dma-names = "rx-tx";

				fsl,ssp-dma-channel = <3>;

				status = "disabled";

			};
@@ -658,9 +680,19 @@ 
				status = "disabled";

			};



			dma-apbx@80024000 {

			dma_apbx: dma-apbx@80024000 {

				compatible = "fsl,imx28-dma-apbx";

				reg = <0x80024000 0x2000>;

				interrupts = <78 79 66 0

					      80 81 68 69

					      70 71 72 73

					      74 75 76 77>;

				interrupt-names = "auart4-rx", "aurat4-tx", "spdif-tx", "empty",

						  "saif0", "saif1", "i2c0", "i2c1",

						  "auart0-rx", "auart0-tx", "auart1-rx", "auart1-tx",

						  "auart2-rx", "auart2-tx", "auart3-rx", "auart3-tx";

				#dma-cells = <1>;

				dma-channels = <16>;

				clocks = <&clks 26>;

			};
@@ -692,6 +724,8 @@ 
				reg = <0x80030000 0x2000>;

				interrupts = <38 86>;

				clocks = <&clks 55>;

				dmas = <&dma_apbh 13>;

				dma-names = "rx";

				status = "disabled";

			};
@@ -767,6 +801,8 @@ 
				reg = <0x80042000 0x2000>;

				interrupts = <59 80>;

				clocks = <&clks 53>;

				dmas = <&dma_apbx 4>;

				dma-names = "rx-tx";

				fsl,saif-dma-channel = <4>;

				status = "disabled";

			};
@@ -781,6 +817,8 @@ 
				reg = <0x80046000 0x2000>;

				interrupts = <58 81>;

				clocks = <&clks 54>;

				dmas = <&dma_apbx 5>;

				dma-names = "rx-tx";

				fsl,saif-dma-channel = <5>;

				status = "disabled";

			};
@@ -796,6 +834,8 @@ 
			spdif@80054000 {

				reg = <0x80054000 0x2000>;

				interrupts = <45 66>;

				dmas = <&dma_apbx 2>;

				dma-names = "tx";

				status = "disabled";

			};
@@ -812,6 +852,8 @@ 
				reg = <0x80058000 0x2000>;

				interrupts = <111 68>;

				clock-frequency = <100000>;

				dmas = <&dma_apbx 6>;

				dma-names = "rx-tx";

				fsl,i2c-dma-channel = <6>;

				status = "disabled";

			};
@@ -823,6 +865,8 @@ 
				reg = <0x8005a000 0x2000>;

				interrupts = <110 69>;

				clock-frequency = <100000>;

				dmas = <&dma_apbx 7>;

				dma-names = "rx-tx";

				fsl,i2c-dma-channel = <7>;

				status = "disabled";

			};
@@ -847,6 +891,8 @@ 
				compatible = "fsl,imx28-auart", "fsl,imx23-auart";

				reg = <0x8006a000 0x2000>;

				interrupts = <112 70 71>;

				dmas = <&dma_apbx 8>, <&dma_apbx 9>;

				dma-names = "rx", "tx";

				fsl,auart-dma-channel = <8 9>;

				clocks = <&clks 45>;

				status = "disabled";
@@ -856,6 +902,8 @@ 
				compatible = "fsl,imx28-auart", "fsl,imx23-auart";

				reg = <0x8006c000 0x2000>;

				interrupts = <113 72 73>;

				dmas = <&dma_apbx 10>, <&dma_apbx 11>;

				dma-names = "rx", "tx";

				clocks = <&clks 45>;

				status = "disabled";

			};
@@ -864,6 +912,8 @@ 
				compatible = "fsl,imx28-auart", "fsl,imx23-auart";

				reg = <0x8006e000 0x2000>;

				interrupts = <114 74 75>;

				dmas = <&dma_apbx 12>, <&dma_apbx 13>;

				dma-names = "rx", "tx";

				clocks = <&clks 45>;

				status = "disabled";

			};
@@ -872,6 +922,8 @@ 
				compatible = "fsl,imx28-auart", "fsl,imx23-auart";

				reg = <0x80070000 0x2000>;

				interrupts = <115 76 77>;

				dmas = <&dma_apbx 14>, <&dma_apbx 15>;

				dma-names = "rx", "tx";

				clocks = <&clks 45>;

				status = "disabled";

			};
@@ -880,6 +932,8 @@ 
				compatible = "fsl,imx28-auart", "fsl,imx23-auart";

				reg = <0x80072000 0x2000>;

				interrupts = <116 78 79>;

				dmas = <&dma_apbx 0>, <&dma_apbx 1>;

				dma-names = "rx", "tx";

				clocks = <&clks 45>;

				status = "disabled";

			};

arch/arm/boot/dts/imx6qdl.dtsi

+7 −1
Original line number Diff line number Diff line
@@ -65,9 +65,13 @@ 
		interrupt-parent = <&intc>;

		ranges;



		dma-apbh@00110000 {

		dma_apbh: dma-apbh@00110000 {

			compatible = "fsl,imx6q-dma-apbh", "fsl,imx28-dma-apbh";

			reg = <0x00110000 0x2000>;

			interrupts = <0 13 0x04>, <0 13 0x04>, <0 13 0x04>, <0 13 0x04>;

			interrupt-names = "gpmi0", "gpmi1", "gpmi2", "gpmi3";

			#dma-cells = <1>;

			dma-channels = <4>;

			clocks = <&clks 106>;

		};
@@ -83,6 +87,8 @@ 
				 <&clks 150>, <&clks 149>;

			clock-names = "gpmi_io", "gpmi_apb", "gpmi_bch",

				      "gpmi_bch_apb", "per1_bch";

			dmas = <&dma_apbh 0>;

			dma-names = "rx-tx";

			fsl,gpmi-dma-channel = <0>;

			status = "disabled";

		};

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