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This is glue layer device bindings. Signed-off-by: Frank Li --- .../bindings/usb/fsl,imx8qm-cdns3.yaml | 122 ++++++++++++++++++ 1 file changed, 122 insertions(+) create mode 100644 Documentation/devicetree/bindings/usb/fsl,imx8qm-cdns3.yaml diff --git a/Documentation/devicetree/bindings/usb/fsl,imx8qm-cdns3.yaml b/Documentation/devicetree/bindings/usb/fsl,imx8qm-cdns3.yaml new file mode 100644 index 000000000000..fc24df1e4483 --- /dev/null +++ b/Documentation/devicetree/bindings/usb/fsl,imx8qm-cdns3.yaml @@ -0,0 +1,122 @@ +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) +# Copyright (c) 2020 NXP +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/usb/fsl,imx8qm-cdns3.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: NXP iMX8QM Soc USB Controller + +maintainers: + - Frank Li + +properties: + compatible: + const: fsl,imx8qm-usb3 + + reg: + items: + - description: Address and length of the register set for iMX USB3 Platform Control + + "#address-cells": + enum: [ 1, 2 ] + + "#size-cells": + enum: [ 1, 2 ] + + ranges: true + + clocks: + description: + A list of phandle and clock-specifier pairs for the clocks + listed in clock-names. + items: + - description: Standby clock. Used during ultra low power states. + - description: USB bus clock for usb3 controller. + - description: AXI clock for AXI interface. + - description: ipg clock for register access. + - description: Core clock for usb3 controller. + + clock-names: + items: + - const: usb3_lpm_clk + - const: usb3_bus_clk + - const: usb3_aclk + - const: usb3_ipg_clk + - const: usb3_core_pclk + + assigned-clocks: + items: + - description: Phandle and clock specifier of IMX_SC_PM_CLK_PER. + - description: Phandle and clock specifoer of IMX_SC_PM_CLK_MISC. + - description: Phandle and clock specifoer of IMX_SC_PM_CLK_MST_BUS. + + assigned-clock-rates: + items: + - description: Must be 125 Mhz. + - description: Must be 12 Mhz. + - description: Must be 250 Mhz. + + power-domains: + maxItems: 1 + +# Required child node: + +patternProperties: + "^usb@[0-9a-f]+$": + $ref: cdns,usb3.yaml# + +required: + - compatible + - reg + - "#address-cells" + - "#size-cells" + - ranges + - clocks + - clock-names + - power-domains + +additionalProperties: false + +examples: + - | + #include + #include + #include + + usbotg3: usb@5b110000 { + compatible = "fsl,imx8qm-usb3"; + ranges; + reg = <0x5b110000 0x10000>; + clocks = <&usb3_lpcg IMX_LPCG_CLK_1>, + <&usb3_lpcg IMX_LPCG_CLK_0>, + <&usb3_lpcg IMX_LPCG_CLK_7>, + <&usb3_lpcg IMX_LPCG_CLK_4>, + <&usb3_lpcg IMX_LPCG_CLK_5>; + clock-names = "usb3_lpm_clk", "usb3_bus_clk", "usb3_aclk", + "usb3_ipg_clk", "usb3_core_pclk"; + assigned-clocks = <&clk IMX_SC_R_USB_2 IMX_SC_PM_CLK_PER>, + <&clk IMX_SC_R_USB_2 IMX_SC_PM_CLK_MISC>, + <&clk IMX_SC_R_USB_2 IMX_SC_PM_CLK_MST_BUS>; + assigned-clock-rates = <125000000>, <12000000>, <250000000>; + power-domains = <&pd IMX_SC_R_USB_2>; + #address-cells = <1>; + #size-cells = <1>; + status = "disabled"; + + usbotg3_cdns3: usb@5b120000 { + compatible = "cdns,usb3"; + interrupt-parent = <&gic>; + interrupts = , + , + , + ; + interrupt-names = "host", "peripheral", "otg", "wakeup"; + reg = <0x5b120000 0x10000>, /* memory area for OTG/DRD registers */ + <0x5b130000 0x10000>, /* memory area for HOST registers */ + <0x5b140000 0x10000>; /* memory area for DEVICE registers */ + reg-names = "otg", "xhci", "dev"; + phys = <&usb3_phy>; + phy-names = "cdns3,usb3-phy"; + }; + };