1 AM33xx MUSB 2~~~~~~~~~~~~~~~ 3- compatible: ti,am33xx-usb 4- reg: offset and length of the usbss register sets 5- ti,hwmods : must be "usb_otg_hs" 6 7The glue layer contains multiple child nodes. It is required the have 8at least a control module node, USB node and a PHY node. The second USB 9node and its PHY node is optional. The DMA node is also optional. 10 11Reset module 12~~~~~~~~~~~~ 13- compatible: ti,am335x-usb-ctrl-module 14- reg: offset and length of the "USB control registers" in the "Control 15 Module" block. A second offset and length for the USB wake up control 16 in the same memory block. 17- reg-names: "phy_ctrl" for the "USB control registers" and "wakeup" for 18 the USB wake up control register. 19 20USB PHY 21~~~~~~~ 22compatible: ti,am335x-usb-phy 23reg: offset and length of the "USB PHY" register space 24ti,ctrl_mod: reference to the "reset module" node 25reg-names: phy 26The PHY should have a "phy" alias numbered properly in the alias 27node. 28 29USB 30~~~ 31- compatible: ti,musb-am33xx 32- reg: offset and length of "USB Controller Registers", and offset and 33 length of "USB Core" register space. 34- reg-names: control for the ""USB Controller Registers" and "mc" for 35 "USB Core" register space 36- interrupts: USB interrupt number 37- interrupt-names: mc 38- dr_mode: Should be one of "host", "peripheral" or "otg". 39- mentor,multipoint: Should be "1" indicating the musb controller supports 40 multipoint. This is a MUSB configuration-specific setting. 41- mentor,num-eps: Specifies the number of endpoints. This is also a 42 MUSB configuration-specific setting. Should be set to "16" 43- mentor,ram-bits: Specifies the ram address size. Should be set to "12" 44- mentor,power: Should be "500". This signifies the controller can supply up to 45 500mA when operating in host mode. 46- phys: reference to the USB phy 47- dmas: specifies the dma channels 48- dma-names: specifies the names of the channels. Use "rxN" for receive 49 and "txN" for transmit endpoints. N specifies the endpoint number. 50 51The controller should have an "usb" alias numbered properly in the alias 52node. 53 54DMA 55~~~ 56- compatible: ti,am3359-cppi41 57- reg: offset and length of the following register spaces: USBSS, USB 58 CPPI DMA Controller, USB CPPI DMA Scheduler, USB Queue Manager 59- reg-names: glue, controller, scheduler, queuemgr 60- #dma-cells: should be set to 2. The first number represents the 61 endpoint number (0 … 14 for endpoints 1 … 15 on instance 0 and 15 … 29 62 for endpoints 1 … 15 on instance 1). The second number is 0 for RX and 63 1 for TX transfers. 64- #dma-channels: should be set to 30 representing the 15 endpoints for 65 each USB instance. 66 67Example: 68~~~~~~~~ 69The following example contains all the nodes as used on am335x-evm: 70 71aliases { 72 usb0 = &usb0; 73 usb1 = &usb1; 74 phy0 = &usb0_phy; 75 phy1 = &usb1_phy; 76}; 77 78usb: usb@47400000 { 79 compatible = "ti,am33xx-usb"; 80 reg = <0x47400000 0x1000>; 81 ranges; 82 #address-cells = <1>; 83 #size-cells = <1>; 84 ti,hwmods = "usb_otg_hs"; 85 86 ctrl_mod: control@44e10000 { 87 compatible = "ti,am335x-usb-ctrl-module"; 88 reg = <0x44e10620 0x10 89 0x44e10648 0x4>; 90 reg-names = "phy_ctrl", "wakeup"; 91 }; 92 93 usb0_phy: usb-phy@47401300 { 94 compatible = "ti,am335x-usb-phy"; 95 reg = <0x47401300 0x100>; 96 reg-names = "phy"; 97 ti,ctrl_mod = <&ctrl_mod>; 98 }; 99 100 usb0: usb@47401000 { 101 compatible = "ti,musb-am33xx"; 102 reg = <0x47401400 0x400 103 0x47401000 0x200>; 104 reg-names = "mc", "control"; 105 106 interrupts = <18>; 107 interrupt-names = "mc"; 108 dr_mode = "otg" 109 mentor,multipoint = <1>; 110 mentor,num-eps = <16>; 111 mentor,ram-bits = <12>; 112 mentor,power = <500>; 113 phys = <&usb0_phy>; 114 115 dmas = <&cppi41dma 0 0 &cppi41dma 1 0 116 &cppi41dma 2 0 &cppi41dma 3 0 117 &cppi41dma 4 0 &cppi41dma 5 0 118 &cppi41dma 6 0 &cppi41dma 7 0 119 &cppi41dma 8 0 &cppi41dma 9 0 120 &cppi41dma 10 0 &cppi41dma 11 0 121 &cppi41dma 12 0 &cppi41dma 13 0 122 &cppi41dma 14 0 &cppi41dma 0 1 123 &cppi41dma 1 1 &cppi41dma 2 1 124 &cppi41dma 3 1 &cppi41dma 4 1 125 &cppi41dma 5 1 &cppi41dma 6 1 126 &cppi41dma 7 1 &cppi41dma 8 1 127 &cppi41dma 9 1 &cppi41dma 10 1 128 &cppi41dma 11 1 &cppi41dma 12 1 129 &cppi41dma 13 1 &cppi41dma 14 1>; 130 dma-names = 131 "rx1", "rx2", "rx3", "rx4", "rx5", "rx6", "rx7", 132 "rx8", "rx9", "rx10", "rx11", "rx12", "rx13", 133 "rx14", "rx15", 134 "tx1", "tx2", "tx3", "tx4", "tx5", "tx6", "tx7", 135 "tx8", "tx9", "tx10", "tx11", "tx12", "tx13", 136 "tx14", "tx15"; 137 }; 138 139 usb1_phy: usb-phy@47401b00 { 140 compatible = "ti,am335x-usb-phy"; 141 reg = <0x47401b00 0x100>; 142 reg-names = "phy"; 143 ti,ctrl_mod = <&ctrl_mod>; 144 }; 145 146 usb1: usb@47401800 { 147 compatible = "ti,musb-am33xx"; 148 reg = <0x47401c00 0x400 149 0x47401800 0x200>; 150 reg-names = "mc", "control"; 151 interrupts = <19>; 152 interrupt-names = "mc"; 153 dr_mode = "host" 154 mentor,multipoint = <1>; 155 mentor,num-eps = <16>; 156 mentor,ram-bits = <12>; 157 mentor,power = <500>; 158 phys = <&usb1_phy>; 159 160 dmas = <&cppi41dma 15 0 &cppi41dma 16 0 161 &cppi41dma 17 0 &cppi41dma 18 0 162 &cppi41dma 19 0 &cppi41dma 20 0 163 &cppi41dma 21 0 &cppi41dma 22 0 164 &cppi41dma 23 0 &cppi41dma 24 0 165 &cppi41dma 25 0 &cppi41dma 26 0 166 &cppi41dma 27 0 &cppi41dma 28 0 167 &cppi41dma 29 0 &cppi41dma 15 1 168 &cppi41dma 16 1 &cppi41dma 17 1 169 &cppi41dma 18 1 &cppi41dma 19 1 170 &cppi41dma 20 1 &cppi41dma 21 1 171 &cppi41dma 22 1 &cppi41dma 23 1 172 &cppi41dma 24 1 &cppi41dma 25 1 173 &cppi41dma 26 1 &cppi41dma 27 1 174 &cppi41dma 28 1 &cppi41dma 29 1>; 175 dma-names = 176 "rx1", "rx2", "rx3", "rx4", "rx5", "rx6", "rx7", 177 "rx8", "rx9", "rx10", "rx11", "rx12", "rx13", 178 "rx14", "rx15", 179 "tx1", "tx2", "tx3", "tx4", "tx5", "tx6", "tx7", 180 "tx8", "tx9", "tx10", "tx11", "tx12", "tx13", 181 "tx14", "tx15"; 182 }; 183 184 cppi41dma: dma-controller@07402000 { 185 compatible = "ti,am3359-cppi41"; 186 reg = <0x47400000 0x1000 187 0x47402000 0x1000 188 0x47403000 0x1000 189 0x47404000 0x4000>; 190 reg-names = "glue", "controller", "scheduler", "queuemgr"; 191 interrupts = <17>; 192 interrupt-names = "glue"; 193 #dma-cells = <2>; 194 #dma-channels = <30>; 195 #dma-requests = <256>; 196 }; 197}; 198