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Commit d567206e authored by Alexandre Bailon's avatar Alexandre Bailon Committed by Vinod Koul
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dt/bindings: da8xx-usb: Add binding for the CPPI 4.1 DMA controller 



DT binding for the TI DA8xx/OMAP-L1x/AM17xx/AM18xx CPPI 4.1 DMA controller.

Signed-off-by: default avatarAlexandre Bailon <abailon@baylibre.com>
Acked-by: default avatarRob Herring <robh@kernel.org>
Signed-off-by: default avatarVinod Koul <vinod.koul@intel.com>
parent a15382b7

Documentation/devicetree/bindings/usb/da8xx-usb.txt

+40 −1
Original line number Diff line number Diff line
@@ -18,10 +18,26 @@ Required properties: 


 - phy-names: Should be "usb-phy"



 - dmas: specifies the dma channels



 - dma-names: specifies the names of the channels. Use "rxN" for receive

   and "txN" for transmit endpoints. N specifies the endpoint number.



Optional properties:

~~~~~~~~~~~~~~~~~~~~

 - vbus-supply: Phandle to a regulator providing the USB bus power.



DMA

~~~

- compatible: ti,da830-cppi41

- reg: offset and length of the following register spaces: CPPI DMA Controller,

  CPPI DMA Scheduler, Queue Manager

- reg-names: "controller", "scheduler", "queuemgr"

- #dma-cells: should be set to 2. The first number represents the

  channel number (0 … 3 for endpoints 1 … 4).

  The second number is 0 for RX and 1 for TX transfers.

- #dma-channels: should be set to 4 representing the 4 endpoints.



Example:

	usb_phy: usb-phy {

		compatible = "ti,da830-usb-phy";
@@ -30,7 +46,10 @@ Example: 
	};

	usb0: usb@200000 {

		compatible = "ti,da830-musb";

		reg =   <0x00200000 0x10000>;

		reg = <0x00200000 0x1000>;

		ranges;

		#address-cells = <1>;

		#size-cells = <1>;

		interrupts = <58>;

		interrupt-names = "mc";
@@ -39,5 +58,25 @@ Example: 
		phys = <&usb_phy 0>;

		phy-names = "usb-phy";



		dmas = <&cppi41dma 0 0 &cppi41dma 1 0

			&cppi41dma 2 0 &cppi41dma 3 0

			&cppi41dma 0 1 &cppi41dma 1 1

			&cppi41dma 2 1 &cppi41dma 3 1>;

		dma-names =

			"rx1", "rx2", "rx3", "rx4",

			"tx1", "tx2", "tx3", "tx4";



		status = "okay";



		cppi41dma: dma-controller@201000 {

			compatible = "ti,da830-cppi41";

			reg =  <0x201000 0x1000

				0x202000 0x1000

				0x204000 0x4000>;

			reg-names = "controller", "scheduler", "queuemgr";

			interrupts = <58>;

			#dma-cells = <2>;

			#dma-channels = <4>;

		};



	};