new file mode 100644
@@ -0,0 +1,90 @@
+NVIDIA Tegra xHCI controller
+============================
+
+The Tegra xHCI controller supports both USB2 and USB3 interfaces exposed
+by the Tegra XUSB pad controller.
+
+Required properties:
+--------------------
+ - compatible: For Tegra124, must contain "nvidia,tegra124-xhci".
+ Otherwise, must contain '"nvidia,<chip>-xhci", "nvidia,tegra124-xhci"'
+ where <chip> is tegra132.
+ - 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_host_src
+ - xusb_falcon_src
+ - xusb_ss
+ - xusb_ss_src
+ - xusb_ss_div2
+ - 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
+ - xusb_src
+ Note that xusb_src is the shared reset for xusb_{ss,hs,fs,falcon,host}_src.
+ - mboxes: Must contain an entry for the XUSB mailbox channel.
+ See ../mailbox/mailbox.txt for details.
+ - mbox-names: Must include the following entries:
+ - xusb
+ - avddio-pex-supply: PCIe/USB3 analog logic power supply. Must supply 1.05V.
+ - dvddio-pex-supply: PCIe/USB3 digital logic power supply. Must supply 1.05V.
+ - avdd-usb-supply: USB controller power supply. Must supply 3.3V.
+ - avdd-pll-utmip-supply: UTMI PLL power supply. Must supply 1.8V.
+ - avdd-pll-erefe-supply: PLLE reference PLL power supply. Must supply 1.05V.
+ - avdd-usb-ss-pll-supply: PCIe/USB3 PLL power supply. Must supply 1.05V.
+ - hvdd-usb-ss-supply: High-voltage PCIe/USB3 power supply. Must supply 3.3V.
+ - hvdd-usb-ss-pll-e-supply: High-voltage PLLE power supply. Must supply 3.3V.
+
+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.
+ Names must be of the form "<type>-<number>" where <type> is one of "utmi",
+ "hsic", or "usb3" and <number> is a 0-based index. On Tegra124, there may
+ be up to 3 UTMI, 2 HSIC, and 2 USB3 PHYs.
+
+Example:
+--------
+ usb-host {
+ compatible = "nvidia,tegra124-xhci";
+ clocks = <&tegra_car TEGRA124_CLK_XUSB_HOST>,
+ <&tegra_car TEGRA124_CLK_XUSB_HOST_SRC>,
+ <&tegra_car TEGRA124_CLK_XUSB_FALCON_SRC>,
+ <&tegra_car TEGRA124_CLK_XUSB_SS>,
+ <&tegra_car TEGRA124_CLK_XUSB_SS_DIV2>,
+ <&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_host_src", "xusb_falcon_src",
+ "xusb_ss", "xusb_ss_div2", "xusb_ss_src",
+ "xusb_hs_src", "xusb_fs_src", "pll_u_480m",
+ "clk_m", "pll_e";
+ resets = <&tegra_car 89>, <&tegra_car 156>, <&tegra_car 143>;
+ reset-names = "xusb_host", "xusb_ss", "xusb_src";
+ mboxes = <&xusb_mbox>;
+ mbox-names = "xusb";
+ 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";
+ avddio-pex-supply = <&vdd_1v05_run>;
+ dvddio-pex-supply = <&vdd_1v05_run>;
+ avdd-usb-supply = <&vdd_3v3_lp0>;
+ avdd-pll-utmip-supply = <&vddio_1v8>;
+ avdd-pll-erefe-supply = <&avdd_1v05_run>;
+ avdd-usb-ss-pll-supply = <&vdd_1v05_run>;
+ hvdd-usb-ss-supply = <&vdd_3v3_lp0>;
+ hvdd-usb-ss-pll-e-supply = <&vdd_3v3_lp0>;
+ };
Add device-tree binding documentation for the xHCI controller present on Tegra124 and later SoCs. Signed-off-by: Andrew Bresticker <abrestic@chromium.org> Cc: Rob Herring <robh+dt@kernel.org> Cc: Pawel Moll <pawel.moll@arm.com> Cc: Mark Rutland <mark.rutland@arm.com> Cc: Ian Campbell <ijc+devicetree@hellion.org.uk> Cc: Kumar Gala <galak@codeaurora.org> Cc: Mathias Nyman <mathias.nyman@intel.com> Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> --- Changes from v6: - Removed XUSB_DEV related clocks/resets. They will be consumed by a separate driver and binding. - Removed reg/interrupts properties. No changes from v5. Changes from v4: - Updated regulator names, as suggested by Thierry. No changes from v3. Changes from v2: - Added mbox-names property. Changes from v1: - Updated to use common mailbox bindings. - Added remaining XUSB-related clocks and resets. - Updated list of power supplies to be more accurate wrt to the hardware. --- .../bindings/usb/nvidia,tegra124-xhci.txt | 90 ++++++++++++++++++++++ 1 file changed, 90 insertions(+) create mode 100644 Documentation/devicetree/bindings/usb/nvidia,tegra124-xhci.txt