Add device-tree binding documentation for the XHCI controller present on Tegra124 and later SoCs. Signed-off-by: Andrew Bresticker <abrestic@xxxxxxxxxxxx> --- .../bindings/usb/nvidia,tegra124-xhci.txt | 76 ++++++++++++++++++++++ 1 file changed, 76 insertions(+) create mode 100644 Documentation/devicetree/bindings/usb/nvidia,tegra124-xhci.txt diff --git a/Documentation/devicetree/bindings/usb/nvidia,tegra124-xhci.txt b/Documentation/devicetree/bindings/usb/nvidia,tegra124-xhci.txt new file mode 100644 index 0000000..fdb8624 --- /dev/null +++ b/Documentation/devicetree/bindings/usb/nvidia,tegra124-xhci.txt @@ -0,0 +1,76 @@ +NVIDIA Tegra XHCI controller +============================ + +The Tegra XHCI controller supports both USB2 and USB3 interfaces exposed +by the Tegra XUSB pad controller. + +Required properties: +-------------------- + - compatible: Should be "nvidia,tegra124-xhci". + - reg: Address and length of the register sets. There should be three + entries in the following order: XHCI host registers, FPCI registers, and + IPFS registers. + - interrupts: XHCI host interrupt. + - clocks: Must contain an entry for each entry in clock-names. + See ../clock/clock-bindings.txt for details. + - clock-names: Must include the following entries: + - xusb_host + - xusb_falcon_src + - xusb_ss + - xusb_ss_src + - xusb_hs_src + - xusb_fs_src + - pll_u_480m + - clk_m + - pll_e + - resets: Must contain an entry for each entry in reset-names. + See ../reset/reset.txt for details. + - reset-names: Must include the following entries: + - xusb_host + - xusb_ss + - nvidia,xusb-mbox: Handle to the Tegra XUSB mailbox node. + +Optional properties: +-------------------- + - phys: Must contain an entry for each entry in phy-names. + See ../phy/phy-bindings.txt for details. + - phy-names: Should include an entry for each PHY used by the controller. + May be a subset of the following: + - utmi-{0,1,2} + - hsic-{0,1} + - usb3-{0,1} + - s1p05v-supply: 1.05V supply regulator. + - s1p8v-supply: 1.8V supply regulator. + - s3p3v-supply: 3.3V supply regulator. + +Example: +-------- + usb@0,70090000 { + compatible = "nvidia,tegra124-xhci"; + reg = <0x0 0x70090000 0x0 0x8000>, + <0x0 0x70098000 0x0 0x1000>, + <0x0 0x70099000 0x0 0x1000>; + interrupts = <GIC_SPI 39 IRQ_TYPE_LEVEL_HIGH>; + clocks = <&tegra_car TEGRA124_CLK_XUSB_HOST>, + <&tegra_car TEGRA124_CLK_XUSB_FALCON_SRC>, + <&tegra_car TEGRA124_CLK_XUSB_SS>, + <&tegra_car TEGRA124_CLK_XUSB_SS_SRC>, + <&tegra_car TEGRA124_CLK_XUSB_HS_SRC>, + <&tegra_car TEGRA124_CLK_XUSB_FS_SRC>, + <&tegra_car TEGRA124_CLK_PLL_U_480M>, + <&tegra_car TEGRA124_CLK_CLK_M>, + <&tegra_car TEGRA124_CLK_PLL_E>; + clock-names = "xusb_host", "xusb_falcon_src", "xusb_ss", + "xusb_ss_src", "xusb_hs_src", "xusb_fs_src", + "pll_u_480m", "clk_m", "pll_e"; + resets = <&tegra_car 89>, <&tegra_car 156>; + reset-names = "xusb_host", "xusb_ss"; + nvidia,xusb-mbox = <&mbox>; + phys = <&padctl TEGRA_XUSB_PADCTL_UTMI_P1>, /* mini-PCIe USB */ + <&padctl TEGRA_XUSB_PADCTL_UTMI_P2>, /* USB A */ + <&padctl TEGRA_XUSB_PADCTL_USB3_P0>; /* USB A */ + phy-names = "utmi-1", "utmi-2", "usb3-0"; + s1p05v-supply = <&vdd_1v05_run>; + s3p3v-supply = <&vdd_3v3_lp0>; + s1p8v-supply = <&vddio_1v8>; + }; -- 2.0.0.526.g5318336 -- To unsubscribe from this list: send the line "unsubscribe linux-usb" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html