Documentation/devicetree/bindings/phy/ti-phy.txt

   1 TI PHY: DT DOCUMENTATION FOR PHYs in TI PLATFORMs
   2
   3 OMAP CONTROL PHY
   4
   5 Required properties:
   6  - compatible: Should be one of
   7  "ti,control-phy-otghs" - if it has otghs_control mailbox register as on OMAP4.
   8  "ti,control-phy-usb2" - if it has Power down bit in control_dev_conf register
   9                         e.g. USB2_PHY on OMAP5.
  10  "ti,control-phy-pipe3" - if it has DPLL and individual Rx & Tx power control
  11                         e.g. USB3 PHY and SATA PHY on OMAP5.
  12  "ti,control-phy-usb2-dra7" - if it has power down register like USB2 PHY on
  13                         DRA7 platform.
  14  "ti,control-phy-usb2-am437" - if it has power down register like USB2 PHY on
  15                         AM437 platform.
  16  - reg : Address and length of the register set for the device. It contains
  17    the address of "otghs_control" for control-phy-otghs or "power" register
  18    for other types.
  19  - reg-names: should be "otghs_control" control-phy-otghs and "power" for
  20    other types.
  21
  22 omap_control_usb: omap-control-usb@4a002300 {
  23         compatible = "ti,control-phy-otghs";
  24         reg = <0x4a00233c 0x4>;
  25         reg-names = "otghs_control";
  26 };
  27
  28 OMAP USB2 PHY
  29
  30 Required properties:
  31  - compatible: Should be "ti,omap-usb2"
  32  - reg : Address and length of the register set for the device.
  33  - #phy-cells: determine the number of cells that should be given in the
  34    phandle while referencing this phy.
  35  - clocks: a list of phandles and clock-specifier pairs, one for each entry in
  36    clock-names.
  37  - clock-names: should include:
  38    * "wkupclk" - wakeup clock.
  39    * "refclk" - reference clock (optional).
  40
  41 Optional properties:
  42  - ctrl-module : phandle of the control module used by PHY driver to power on
  43    the PHY.
  44
  45 This is usually a subnode of ocp2scp to which it is connected.
  46
  47 usb2phy@4a0ad080 {
  48         compatible = "ti,omap-usb2";
  49         reg = <0x4a0ad080 0x58>;
  50         ctrl-module = <&omap_control_usb>;
  51         #phy-cells = <0>;
  52         clocks = <&usb_phy_cm_clk32k>, <&usb_otg_ss_refclk960m>;
  53         clock-names = "wkupclk", "refclk";
  54 };
  55
  56 TI PIPE3 PHY
  57
  58 Required properties:
  59  - compatible: Should be "ti,phy-usb3", "ti,phy-pipe3-sata" or
  60    "ti,phy-pipe3-pcie. "ti,omap-usb3" is deprecated.
  61  - reg : Address and length of the register set for the device.
  62  - reg-names: The names of the register addresses corresponding to the registers
  63    filled in "reg".
  64  - #phy-cells: determine the number of cells that should be given in the
  65    phandle while referencing this phy.
  66  - clocks: a list of phandles and clock-specifier pairs, one for each entry in
  67    clock-names.
  68  - clock-names: should include:
  69    * "wkupclk" - wakeup clock.
  70    * "sysclk" - system clock.
  71    * "refclk" - reference clock.
  72    * "dpll_ref" - external dpll ref clk
  73    * "dpll_ref_m2" - external dpll ref clk
  74    * "phy-div" - divider for apll
  75    * "div-clk" - apll clock
  76
  77 Optional properties:
  78  - ctrl-module : phandle of the control module used by PHY driver to power on
  79    the PHY.
  80  - id: If there are multiple instance of the same type, in order to
  81    differentiate between each instance "id" can be used (e.g., multi-lane PCIe
  82    PHY). If "id" is not provided, it is set to default value of '1'.
  83
  84 This is usually a subnode of ocp2scp to which it is connected.
  85
  86 usb3phy@4a084400 {
  87         compatible = "ti,phy-usb3";
  88         reg = <0x4a084400 0x80>,
  89               <0x4a084800 0x64>,
  90               <0x4a084c00 0x40>;
  91         reg-names = "phy_rx", "phy_tx", "pll_ctrl";
  92         ctrl-module = <&omap_control_usb>;
  93         #phy-cells = <0>;
  94         clocks = <&usb_phy_cm_clk32k>,
  95                  <&sys_clkin>,
  96                  <&usb_otg_ss_refclk960m>;
  97         clock-names =   "wkupclk",
  98                         "sysclk",
  99                         "refclk";
 100 };