[PATCH v2 1/3] dt-bindings: usb: cdns-imx8qm: add imx8qm cdns3 glue bindings

[Frank Li <Frank.Li@nxp.com>]

NXP imx8qm integrates 1 cdns3 IP. This is glue layer device bindings.

Signed-off-by: Frank Li <Frank.Li@nxp.com>
---
 .../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 <Frank.Li@nxp.com>
+
+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 <dt-bindings/clock/imx8-lpcg.h>
+    #include <dt-bindings/firmware/imx/rsrc.h>
+    #include <dt-bindings/interrupt-controller/arm-gic.h>
+
+    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 = <GIC_SPI 271 IRQ_TYPE_LEVEL_HIGH>,
+                       <GIC_SPI 271 IRQ_TYPE_LEVEL_HIGH>,
+                       <GIC_SPI 271 IRQ_TYPE_LEVEL_HIGH>,
+                       <GIC_SPI 271 IRQ_TYPE_LEVEL_HIGH>;
+          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";
+      };
+    };
-- 
2.34.1


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