Add device-tree binding documentation for the XHCI controller present
on Tegra124 and later SoCs.
Signed-off-by: Andrew Bresticker <abres...@chromium.org>
---
.../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
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