target/linux/ipq806x/patches/0158-usb-dwc3-qcom-Add-device-tree-binding.patch

   1 From c7045330c5976eb31bd79bc57c5db684588d595e Mon Sep 17 00:00:00 2001
   2 From: "Ivan T. Ivanov" <iivanov@mm-sol.com>
   3 Date: Mon, 7 Oct 2013 10:44:55 +0300
   4 Subject: [PATCH 158/182] usb: dwc3: qcom: Add device tree binding
   5
   6 QCOM USB3.0 core wrapper consist of USB3.0 IP from Synopsys
   7 (SNPS) and HS, SS PHY's control and configuration registers.
   8
   9 It could operate in device mode (SS, HS, FS) and host
  10 mode (SS, HS, FS, LS).
  11
  12 Signed-off-by: Ivan T. Ivanov <iivanov@mm-sol.com>
  13 Acked-by: Stephen Warren <swarren@nvidia.com>
  14 ---
  15  .../devicetree/bindings/usb/qcom,dwc3.txt          |  104 ++++++++++++++++++++
  16  1 file changed, 104 insertions(+)
  17  create mode 100644 Documentation/devicetree/bindings/usb/qcom,dwc3.txt
  18
  19 --- /dev/null
  20 +++ b/Documentation/devicetree/bindings/usb/qcom,dwc3.txt
  21 @@ -0,0 +1,104 @@
  22 +Qualcomm SuperSpeed DWC3 USB SoC controller
  23 +
  24 +
  25 +QCOM DWC3 Highspeed USB PHY
  26 +========================
  27 +Required properities:
  28 +- compatible:  should contain "qcom,dwc3-hsphy";
  29 +- reg:                 offset and length of the register set in the memory map
  30 +- clocks:              A list of phandle + clock-specifier pairs for the
  31 +                               clocks listed in clock-names
  32 +- clock-names: Should contain the following:
  33 +  "utmi"               UTMI clock
  34 +- v1p8-supply: phandle to the regulator for the 1.8v supply to HSPHY.
  35 +- v3p3-supply: phandle to the regulator for the 3.3v supply to HSPHY.
  36 +- vbus-supply: phandle to the regulator for the vbus supply for host
  37 +               mode.
  38 +- vddcx-supply: phandle to the regulator for the vdd supply for HSPHY
  39 +                digital circuit operation.
  40 +
  41 +Optional clocks:
  42 +  "xo"                 External reference clock
  43 +
  44 +
  45 +QCOM DWC3 Superspeed USB PHY
  46 +=========================
  47 +Required properities:
  48 +- compatible:  should contain "qcom,dwc3-ssphy";
  49 +- reg:                 offset and length of the register set in the memory map
  50 +- clocks:              A list of phandle + clock-specifier pairs for the
  51 +                               clocks listed in clock-names
  52 +- clock-names: Should contain the following:
  53 +  "ref"                        Reference clock used in host mode.
  54 +- v1p8-supply: phandle to the regulator for the 1.8v supply to HSPHY.
  55 +- vddcx-supply: phandle to the regulator for the vdd supply for HSPHY
  56 +                digital circuit operation.
  57 +
  58 +Optional clocks:
  59 +  "xo"                 External reference clock
  60 +
  61 +QCOM DWC3 controller wrapper
  62 +===========================
  63 +Required properties:
  64 +- compatible:  should contain "qcom,dwc3"
  65 +- clocks:              A list of phandle + clock-specifier pairs for the
  66 +                               clocks listed in clock-names
  67 +- clock-names: Should contain the following:
  68 +  "core"               Master/Core clock, have to be >= 125 MHz for SS
  69 +                               operation and >= 60MHz for HS operation
  70 +
  71 +Optional clocks:
  72 +  "iface"              System bus AXI clock.  Not present on all platforms
  73 +  "sleep"              Sleep clock, used when USB3 core goes into low
  74 +                               power mode (U3).
  75 +
  76 +Optional regulator:
  77 +- gdsc-supply: phandle to the regulator from globally distributed
  78 +                               switch controller
  79 +
  80 +Required child node:
  81 +A child node must exist to represent the core DWC3 IP block. The name of
  82 +the node is not important. The content of the node is defined in dwc3.txt.
  83 +
  84 +Example device nodes:
  85 +
  86 +               hs_phy_0: phy@110f8800 {
  87 +                       compatible = "qcom,dwc3-hsphy";
  88 +                       reg = <0x110f8800 0x30>;
  89 +                       clocks = <&gcc USB30_0_UTMI_CLK>;
  90 +                       clock-names = "utmi";
  91 +
  92 +                       status = "disabled";
  93 +               };
  94 +
  95 +               ss_phy_0: phy@110f8830 {
  96 +                       compatible = "qcom,dwc3-ssphy";
  97 +                       reg = <0x110f8830 0x30>;
  98 +
  99 +                       clocks = <&gcc USB30_0_MASTER_CLK>;
 100 +                       clock-names = "ref";
 101 +
 102 +                       status = "disabled";
 103 +               };
 104 +
 105 +               usb3_0: usb30@0 {
 106 +                       compatible = "qcom,dwc3";
 107 +                       #address-cells = <1>;
 108 +                       #size-cells = <1>;
 109 +                       clocks = <&gcc USB30_0_MASTER_CLK>;
 110 +                       clock-names = "core";
 111 +
 112 +                       ranges;
 113 +
 114 +                       status = "disabled";
 115 +
 116 +                       dwc3@11000000 {
 117 +                               compatible = "snps,dwc3";
 118 +                               reg = <0x11000000 0xcd00>;
 119 +                               interrupts = <0 110 0x4>;
 120 +                               usb-phy = <&hs_phy_0>, <&ss_phy_0>;
 121 +                               phy-names = "usb2-phy", "usb3-phy";
 122 +                               tx-fifo-resize;
 123 +                               dr_mode = "host";
 124 +                       };
 125 +               };