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 to have 8at least a control module node, USB node and a PHY node. The second USB 9node and its PHY node are 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 #phy-cells = <0>; 99 }; 100 101 usb0: usb@47401000 { 102 compatible = "ti,musb-am33xx"; 103 reg = <0x47401400 0x400 104 0x47401000 0x200>; 105 reg-names = "mc", "control"; 106 107 interrupts = <18>; 108 interrupt-names = "mc"; 109 dr_mode = "otg" 110 mentor,multipoint = <1>; 111 mentor,num-eps = <16>; 112 mentor,ram-bits = <12>; 113 mentor,power = <500>; 114 phys = <&usb0_phy>; 115 116 dmas = <&cppi41dma 0 0 &cppi41dma 1 0 117 &cppi41dma 2 0 &cppi41dma 3 0 118 &cppi41dma 4 0 &cppi41dma 5 0 119 &cppi41dma 6 0 &cppi41dma 7 0 120 &cppi41dma 8 0 &cppi41dma 9 0 121 &cppi41dma 10 0 &cppi41dma 11 0 122 &cppi41dma 12 0 &cppi41dma 13 0 123 &cppi41dma 14 0 &cppi41dma 0 1 124 &cppi41dma 1 1 &cppi41dma 2 1 125 &cppi41dma 3 1 &cppi41dma 4 1 126 &cppi41dma 5 1 &cppi41dma 6 1 127 &cppi41dma 7 1 &cppi41dma 8 1 128 &cppi41dma 9 1 &cppi41dma 10 1 129 &cppi41dma 11 1 &cppi41dma 12 1 130 &cppi41dma 13 1 &cppi41dma 14 1>; 131 dma-names = 132 "rx1", "rx2", "rx3", "rx4", "rx5", "rx6", "rx7", 133 "rx8", "rx9", "rx10", "rx11", "rx12", "rx13", 134 "rx14", "rx15", 135 "tx1", "tx2", "tx3", "tx4", "tx5", "tx6", "tx7", 136 "tx8", "tx9", "tx10", "tx11", "tx12", "tx13", 137 "tx14", "tx15"; 138 }; 139 140 usb1_phy: usb-phy@47401b00 { 141 compatible = "ti,am335x-usb-phy"; 142 reg = <0x47401b00 0x100>; 143 reg-names = "phy"; 144 ti,ctrl_mod = <&ctrl_mod>; 145 #phy-cells = <0>; 146 }; 147 148 usb1: usb@47401800 { 149 compatible = "ti,musb-am33xx"; 150 reg = <0x47401c00 0x400 151 0x47401800 0x200>; 152 reg-names = "mc", "control"; 153 interrupts = <19>; 154 interrupt-names = "mc"; 155 dr_mode = "host" 156 mentor,multipoint = <1>; 157 mentor,num-eps = <16>; 158 mentor,ram-bits = <12>; 159 mentor,power = <500>; 160 phys = <&usb1_phy>; 161 162 dmas = <&cppi41dma 15 0 &cppi41dma 16 0 163 &cppi41dma 17 0 &cppi41dma 18 0 164 &cppi41dma 19 0 &cppi41dma 20 0 165 &cppi41dma 21 0 &cppi41dma 22 0 166 &cppi41dma 23 0 &cppi41dma 24 0 167 &cppi41dma 25 0 &cppi41dma 26 0 168 &cppi41dma 27 0 &cppi41dma 28 0 169 &cppi41dma 29 0 &cppi41dma 15 1 170 &cppi41dma 16 1 &cppi41dma 17 1 171 &cppi41dma 18 1 &cppi41dma 19 1 172 &cppi41dma 20 1 &cppi41dma 21 1 173 &cppi41dma 22 1 &cppi41dma 23 1 174 &cppi41dma 24 1 &cppi41dma 25 1 175 &cppi41dma 26 1 &cppi41dma 27 1 176 &cppi41dma 28 1 &cppi41dma 29 1>; 177 dma-names = 178 "rx1", "rx2", "rx3", "rx4", "rx5", "rx6", "rx7", 179 "rx8", "rx9", "rx10", "rx11", "rx12", "rx13", 180 "rx14", "rx15", 181 "tx1", "tx2", "tx3", "tx4", "tx5", "tx6", "tx7", 182 "tx8", "tx9", "tx10", "tx11", "tx12", "tx13", 183 "tx14", "tx15"; 184 }; 185 186 cppi41dma: dma-controller@7402000 { 187 compatible = "ti,am3359-cppi41"; 188 reg = <0x47400000 0x1000 189 0x47402000 0x1000 190 0x47403000 0x1000 191 0x47404000 0x4000>; 192 reg-names = "glue", "controller", "scheduler", "queuemgr"; 193 interrupts = <17>; 194 interrupt-names = "glue"; 195 #dma-cells = <2>; 196 #dma-channels = <30>; 197 #dma-requests = <256>; 198 }; 199}; 200