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    Subject[PATCH RFC 1/5] dt-bindings: add binding for CDNSP-DRD controller
    Date
    This patch aim at documenting USB related dt-bindings for the
    Cadence CDNSP-DRD controller.

    Signed-off-by: Pawel Laszczak <pawell@cadence.com>
    ---
    .../devicetree/bindings/usb/cdns-cdnsp.yaml | 104 ++++++++++++++++++
    1 file changed, 104 insertions(+)
    create mode 100644 Documentation/devicetree/bindings/usb/cdns-cdnsp.yaml

    diff --git a/Documentation/devicetree/bindings/usb/cdns-cdnsp.yaml b/Documentation/devicetree/bindings/usb/cdns-cdnsp.yaml
    new file mode 100644
    index 000000000000..83d353711e31
    --- /dev/null
    +++ b/Documentation/devicetree/bindings/usb/cdns-cdnsp.yaml
    @@ -0,0 +1,104 @@
    +# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
    +%YAML 1.2
    +---
    +$id: "http://devicetree.org/schemas/usb/cdns-cdnsp.yaml#"
    +$schema: "http://devicetree.org/meta-schemas/core.yaml#"
    +
    +title: Device tree binding for Cadence CDNSP (Super Speed Plus) controller
    +
    +maintainers:
    + - Pawel Laszczak <pawell@cadence.com>
    +
    +description:
    + The Cadence CDNSP controller support Host, Device and DRD mode.
    + It also supports Full Speed, Hight Speed, Super Speed and
    + Super Speed Plus protocols.
    +
    +properties:
    + compatible:
    + items:
    + - enum:
    + - cdns,usbssp
    +
    + reg:
    + description: Physical base address and size of the
    + controller's register areas. Controller has
    + three different regions.
    + minItems: 2
    + maxItems: 3
    + items:
    + - description: HOST registers area.
    + - description: DEVICE registers area.
    + - description: OTG/DRD registers area.
    +
    + reg-names:
    + items:
    + - const: xhci
    + - const: dev
    + - const: otg
    +
    + interrupts:
    + minItems: 2
    + maxItems: 3
    + items:
    + - description: Interrupt used by XHCI driver.
    + - description: Interrupt used by device driver.
    + - description: Interrupt used by DRD part of driver.
    +
    + interrupt-names:
    + items:
    + - const: host
    + - const: peripheral
    + - const: otg
    +
    + maximum-speed:
    + enum:
    + - full-speed
    + - high-speed
    + - super-speed
    + - super-speed-plus
    +
    + dr_mode:
    + enum:
    + - host
    + - peripheral
    + - otg
    +
    + phys:
    + description:
    + Reference to the USB PHY.
    + Must contain an entry for each entry in phy-names.
    + See ../phy/phy-bindings.txt for details.
    +
    + phy-names:
    + items:
    + - const: cdnsp,usb2-phy
    + - const: cdnsp,usb3-phy
    +
    +required:
    + - compatible
    + - reg
    + - reg-names
    + - interrupts
    + - interrupt-names
    +
    +examples:
    + - |
    + #include <dt-bindings/interrupt-controller/arm-gic.h>
    +
    + usb_otg: usb@f3000000 {
    + compatible = "cdns,usbssp";
    + reg = <0x00 0x01c13000 0x00 0x0400>,
    + <0x00 0xf3010000 0x00 0x10000>,
    + <0x00 0xf3020000 0x00 0x10000>;
    + reg-names = "xhci", "dev", "otg";
    + interrupts = <GIC_SPI 7 IRQ_TYPE_LEVEL_HIGH>,
    + <GIC_SPI 7 IRQ_TYPE_LEVEL_HIGH>,
    + <GIC_SPI 8 IRQ_TYPE_LEVEL_HIGH>;
    + interrupt-names = "host", "peripheral", "otg";
    + phys = <&usbphy 0>;
    + phy-names = "cdnsp,usb2-phy", "cdnsp,usb3-phy";
    + dr_mode = "peripheral";
    + };
    +
    +...
    --
    2.17.1
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