Bindings/phy/qcom-qusb2-phy.txt

   1 Qualcomm QUSB2 phy controller
   2 =============================
   3
   4 QUSB2 controller supports LS/FS/HS usb connectivity on Qualcomm chipsets.
   5
   6 Required properties:
   7  - compatible: compatible list, contains
   8                "qcom,msm8996-qusb2-phy" for 14nm PHY on msm8996,
   9                "qcom,qusb2-v2-phy" for QUSB2 V2 PHY.
  10
  11  - reg: offset and length of the PHY register set.
  12  - #phy-cells: must be 0.
  13
  14  - clocks: a list of phandles and clock-specifier pairs,
  15            one for each entry in clock-names.
  16  - clock-names: must be "cfg_ahb" for phy config clock,
  17                         "ref" for 19.2 MHz ref clk,
  18                         "iface" for phy interface clock (Optional).
  19
  20  - vdda-pll-supply: Phandle to 1.8V regulator supply to PHY refclk pll block.
  21  - vdda-phy-dpdm-supply: Phandle to 3.1V regulator supply to Dp/Dm port signals.
  22
  23  - resets: Phandle to reset to phy block.
  24
  25 Optional properties:
  26  - nvmem-cells: Phandle to nvmem cell that contains 'HS Tx trim'
  27                 tuning parameter value for qusb2 phy.
  28
  29  - qcom,tcsr-syscon: Phandle to TCSR syscon register region.
  30
  31 Example:
  32         hsusb_phy: phy@7411000 {
  33                 compatible = "qcom,msm8996-qusb2-phy";
  34                 reg = <0x7411000 0x180>;
  35                 #phy-cells = <0>;
  36
  37                 clocks = <&gcc GCC_USB_PHY_CFG_AHB2PHY_CLK>,
  38                         <&gcc GCC_RX1_USB2_CLKREF_CLK>,
  39                 clock-names = "cfg_ahb", "ref";
  40
  41                 vdda-pll-supply = <&pm8994_l12>;
  42                 vdda-phy-dpdm-supply = <&pm8994_l24>;
  43
  44                 resets = <&gcc GCC_QUSB2PHY_PRIM_BCR>;
  45                 nvmem-cells = <&qusb2p_hstx_trim>;
  46         };