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199 lines
5.9 KiB
199 lines
5.9 KiB
AM33xx MUSB |
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~~~~~~~~~~~~~~~ |
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- compatible: ti,am33xx-usb |
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- reg: offset and length of the usbss register sets |
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- ti,hwmods : must be "usb_otg_hs" |
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The glue layer contains multiple child nodes. It is required to have |
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at least a control module node, USB node and a PHY node. The second USB |
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node and its PHY node are optional. The DMA node is also optional. |
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Reset module |
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~~~~~~~~~~~~ |
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- compatible: ti,am335x-usb-ctrl-module |
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- reg: offset and length of the "USB control registers" in the "Control |
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Module" block. A second offset and length for the USB wake up control |
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in the same memory block. |
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- reg-names: "phy_ctrl" for the "USB control registers" and "wakeup" for |
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the USB wake up control register. |
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USB PHY |
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~~~~~~~ |
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compatible: ti,am335x-usb-phy |
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reg: offset and length of the "USB PHY" register space |
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ti,ctrl_mod: reference to the "reset module" node |
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reg-names: phy |
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The PHY should have a "phy" alias numbered properly in the alias |
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node. |
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USB |
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~~~ |
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- compatible: ti,musb-am33xx |
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- reg: offset and length of "USB Controller Registers", and offset and |
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length of "USB Core" register space. |
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- reg-names: control for the ""USB Controller Registers" and "mc" for |
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"USB Core" register space |
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- interrupts: USB interrupt number |
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- interrupt-names: mc |
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- dr_mode: Should be one of "host", "peripheral" or "otg". |
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- mentor,multipoint: Should be "1" indicating the musb controller supports |
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multipoint. This is a MUSB configuration-specific setting. |
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- mentor,num-eps: Specifies the number of endpoints. This is also a |
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MUSB configuration-specific setting. Should be set to "16" |
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- mentor,ram-bits: Specifies the ram address size. Should be set to "12" |
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- mentor,power: Should be "500". This signifies the controller can supply up to |
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500mA when operating in host mode. |
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- phys: reference to the USB phy |
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- dmas: specifies the dma channels |
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- dma-names: specifies the names of the channels. Use "rxN" for receive |
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and "txN" for transmit endpoints. N specifies the endpoint number. |
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The controller should have an "usb" alias numbered properly in the alias |
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node. |
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DMA |
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~~~ |
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- compatible: ti,am3359-cppi41 |
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- reg: offset and length of the following register spaces: USBSS, USB |
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CPPI DMA Controller, USB CPPI DMA Scheduler, USB Queue Manager |
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- reg-names: glue, controller, scheduler, queuemgr |
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- #dma-cells: should be set to 2. The first number represents the |
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endpoint number (0 … 14 for endpoints 1 … 15 on instance 0 and 15 … 29 |
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for endpoints 1 … 15 on instance 1). The second number is 0 for RX and |
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1 for TX transfers. |
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- #dma-channels: should be set to 30 representing the 15 endpoints for |
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each USB instance. |
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Example: |
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~~~~~~~~ |
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The following example contains all the nodes as used on am335x-evm: |
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aliases { |
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usb0 = &usb0; |
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usb1 = &usb1; |
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phy0 = &usb0_phy; |
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phy1 = &usb1_phy; |
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}; |
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usb: usb@47400000 { |
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compatible = "ti,am33xx-usb"; |
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reg = <0x47400000 0x1000>; |
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ranges; |
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#address-cells = <1>; |
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#size-cells = <1>; |
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ti,hwmods = "usb_otg_hs"; |
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ctrl_mod: control@44e10000 { |
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compatible = "ti,am335x-usb-ctrl-module"; |
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reg = <0x44e10620 0x10 |
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0x44e10648 0x4>; |
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reg-names = "phy_ctrl", "wakeup"; |
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}; |
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usb0_phy: usb-phy@47401300 { |
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compatible = "ti,am335x-usb-phy"; |
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reg = <0x47401300 0x100>; |
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reg-names = "phy"; |
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ti,ctrl_mod = <&ctrl_mod>; |
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#phy-cells = <0>; |
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}; |
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usb0: usb@47401000 { |
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compatible = "ti,musb-am33xx"; |
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reg = <0x47401400 0x400 |
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0x47401000 0x200>; |
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reg-names = "mc", "control"; |
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interrupts = <18>; |
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interrupt-names = "mc"; |
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dr_mode = "otg" |
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mentor,multipoint = <1>; |
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mentor,num-eps = <16>; |
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mentor,ram-bits = <12>; |
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mentor,power = <500>; |
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phys = <&usb0_phy>; |
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dmas = <&cppi41dma 0 0 &cppi41dma 1 0 |
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&cppi41dma 2 0 &cppi41dma 3 0 |
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&cppi41dma 4 0 &cppi41dma 5 0 |
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&cppi41dma 6 0 &cppi41dma 7 0 |
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&cppi41dma 8 0 &cppi41dma 9 0 |
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&cppi41dma 10 0 &cppi41dma 11 0 |
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&cppi41dma 12 0 &cppi41dma 13 0 |
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&cppi41dma 14 0 &cppi41dma 0 1 |
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&cppi41dma 1 1 &cppi41dma 2 1 |
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&cppi41dma 3 1 &cppi41dma 4 1 |
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&cppi41dma 5 1 &cppi41dma 6 1 |
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&cppi41dma 7 1 &cppi41dma 8 1 |
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&cppi41dma 9 1 &cppi41dma 10 1 |
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&cppi41dma 11 1 &cppi41dma 12 1 |
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&cppi41dma 13 1 &cppi41dma 14 1>; |
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dma-names = |
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"rx1", "rx2", "rx3", "rx4", "rx5", "rx6", "rx7", |
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"rx8", "rx9", "rx10", "rx11", "rx12", "rx13", |
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"rx14", "rx15", |
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"tx1", "tx2", "tx3", "tx4", "tx5", "tx6", "tx7", |
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"tx8", "tx9", "tx10", "tx11", "tx12", "tx13", |
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"tx14", "tx15"; |
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}; |
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usb1_phy: usb-phy@47401b00 { |
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compatible = "ti,am335x-usb-phy"; |
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reg = <0x47401b00 0x100>; |
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reg-names = "phy"; |
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ti,ctrl_mod = <&ctrl_mod>; |
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#phy-cells = <0>; |
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}; |
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usb1: usb@47401800 { |
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compatible = "ti,musb-am33xx"; |
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reg = <0x47401c00 0x400 |
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0x47401800 0x200>; |
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reg-names = "mc", "control"; |
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interrupts = <19>; |
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interrupt-names = "mc"; |
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dr_mode = "host" |
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mentor,multipoint = <1>; |
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mentor,num-eps = <16>; |
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mentor,ram-bits = <12>; |
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mentor,power = <500>; |
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phys = <&usb1_phy>; |
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dmas = <&cppi41dma 15 0 &cppi41dma 16 0 |
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&cppi41dma 17 0 &cppi41dma 18 0 |
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&cppi41dma 19 0 &cppi41dma 20 0 |
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&cppi41dma 21 0 &cppi41dma 22 0 |
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&cppi41dma 23 0 &cppi41dma 24 0 |
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&cppi41dma 25 0 &cppi41dma 26 0 |
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&cppi41dma 27 0 &cppi41dma 28 0 |
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&cppi41dma 29 0 &cppi41dma 15 1 |
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&cppi41dma 16 1 &cppi41dma 17 1 |
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&cppi41dma 18 1 &cppi41dma 19 1 |
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&cppi41dma 20 1 &cppi41dma 21 1 |
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&cppi41dma 22 1 &cppi41dma 23 1 |
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&cppi41dma 24 1 &cppi41dma 25 1 |
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&cppi41dma 26 1 &cppi41dma 27 1 |
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&cppi41dma 28 1 &cppi41dma 29 1>; |
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dma-names = |
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"rx1", "rx2", "rx3", "rx4", "rx5", "rx6", "rx7", |
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"rx8", "rx9", "rx10", "rx11", "rx12", "rx13", |
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"rx14", "rx15", |
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"tx1", "tx2", "tx3", "tx4", "tx5", "tx6", "tx7", |
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"tx8", "tx9", "tx10", "tx11", "tx12", "tx13", |
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"tx14", "tx15"; |
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}; |
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cppi41dma: dma-controller@7402000 { |
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compatible = "ti,am3359-cppi41"; |
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reg = <0x47400000 0x1000 |
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0x47402000 0x1000 |
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0x47403000 0x1000 |
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0x47404000 0x4000>; |
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reg-names = "glue", "controller", "scheduler", "queuemgr"; |
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interrupts = <17>; |
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interrupt-names = "glue"; |
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#dma-cells = <2>; |
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#dma-channels = <30>; |
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#dma-requests = <256>; |
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}; |
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};
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