target/linux/mediatek/patches-4.4/0018-dt-bindings-Add-a-binding-for-Mediatek-xHCI-host-con.patch

   1 From ba126a519da8a036dae0032e9d5a89e47570e5fb Mon Sep 17 00:00:00 2001
   2 From: "chunfeng.yun@mediatek.com" <chunfeng.yun@mediatek.com>
   3 Date: Tue, 17 Nov 2015 17:18:39 +0800
   4 Subject: [PATCH 018/102] dt-bindings: Add a binding for Mediatek xHCI host
   5  controller
   6
   7 add a DT binding documentation of xHCI host controller for the
   8 MT8173 SoC from Mediatek.
   9
  10 Signed-off-by: Chunfeng Yun <chunfeng.yun@mediatek.com>
  11 ---
  12  .../devicetree/bindings/usb/mt8173-xhci.txt        |   51 ++++++++++++++++++++
  13  1 file changed, 51 insertions(+)
  14  create mode 100644 Documentation/devicetree/bindings/usb/mt8173-xhci.txt
  15
  16 --- /dev/null
  17 +++ b/Documentation/devicetree/bindings/usb/mt8173-xhci.txt
  18 @@ -0,0 +1,51 @@
  19 +MT8173 xHCI
  20 +
  21 +The device node for Mediatek SOC USB3.0 host controller
  22 +
  23 +Required properties:
  24 + - compatible : should contain "mediatek,mt8173-xhci"
  25 + - reg : specifies physical base address and size of the registers,
  26 +       the first one for MAC, the second for IPPC
  27 + - interrupts : interrupt used by the controller
  28 + - power-domains : a phandle to USB power domain node to control USB's
  29 +       mtcmos
  30 + - vusb33-supply : regulator of USB avdd3.3v
  31 +
  32 + - clocks : a list of phandle + clock-specifier pairs, one for each
  33 +       entry in clock-names
  34 + - clock-names : must contain
  35 +       "sys_ck": for clock of xHCI MAC
  36 +       "wakeup_deb_p0": for USB wakeup debounce clock of port0
  37 +       "wakeup_deb_p0": for USB wakeup debounce clock of port1
  38 +
  39 + - phys : a list of phandle + phy specifier pairs
  40 +
  41 +Optional properties:
  42 + - mediatek,wakeup-src : 1: ip sleep wakeup mode; 2: line state wakeup
  43 +       mode;
  44 + - mediatek,syscon-wakeup : phandle to syscon used to access USB wakeup
  45 +       control register, it depends on "mediatek,wakeup-src".
  46 + - vbus-supply : reference to the VBUS regulator;
  47 + - usb3-lpm-capable : supports USB3.0 LPM
  48 +
  49 +Example:
  50 +usb30: usb@11270000 {
  51 +       compatible = "mediatek,mt8173-xhci";
  52 +       reg = <0 0x11270000 0 0x1000>,
  53 +             <0 0x11280700 0 0x0100>;
  54 +       interrupts = <GIC_SPI 115 IRQ_TYPE_LEVEL_LOW>;
  55 +       power-domains = <&scpsys MT8173_POWER_DOMAIN_USB>;
  56 +       clocks = <&topckgen CLK_TOP_USB30_SEL>,
  57 +                <&pericfg CLK_PERI_USB0>,
  58 +                <&pericfg CLK_PERI_USB1>;
  59 +       clock-names = "sys_ck",
  60 +                     "wakeup_deb_p0",
  61 +                     "wakeup_deb_p1";
  62 +       phys = <&phy_port0 PHY_TYPE_USB3>,
  63 +              <&phy_port1 PHY_TYPE_USB2>;
  64 +       vusb33-supply = <&mt6397_vusb_reg>;
  65 +       vbus-supply = <&usb_p1_vbus>;
  66 +       usb3-lpm-capable;
  67 +       mediatek,syscon-wakeup = <&pericfg>;
  68 +       mediatek,wakeup-src = <1>;
  69 +};