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Diffstat (limited to 'Documentation/devicetree/bindings/usb/da8xx-usb.txt')
| -rw-r--r-- | Documentation/devicetree/bindings/usb/da8xx-usb.txt | 81 |
1 files changed, 81 insertions, 0 deletions
diff --git a/Documentation/devicetree/bindings/usb/da8xx-usb.txt b/Documentation/devicetree/bindings/usb/da8xx-usb.txt new file mode 100644 index 000000000..fb2027a7d --- /dev/null +++ b/Documentation/devicetree/bindings/usb/da8xx-usb.txt @@ -0,0 +1,81 @@ +TI DA8xx MUSB +~~~~~~~~~~~~~ +For DA8xx/OMAP-L1x/AM17xx/AM18xx platforms. + +Required properties: +~~~~~~~~~~~~~~~~~~~~ + - compatible : Should be set to "ti,da830-musb". + + - reg: Offset and length of the USB controller register set. + + - interrupts: The USB interrupt number. + + - interrupt-names: Should be set to "mc". + + - dr_mode: The USB operation mode. Should be one of "host", "peripheral" or "otg". + + - phys: Phandle for the PHY device + + - 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. +- #dma-channels: deprecated + +Example: + usb_phy: usb-phy { + compatible = "ti,da830-usb-phy"; + #phy-cells = <0>; + }; + usb0: usb@200000 { + compatible = "ti,da830-musb"; + reg = <0x00200000 0x1000>; + ranges; + #address-cells = <1>; + #size-cells = <1>; + interrupts = <58>; + interrupt-names = "mc"; + + dr_mode = "host"; + vbus-supply = <&usb_vbus>; + 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"; + + + 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>; + }; + + }; |