Document the DWC3 USB bindings for Realtek SoCs. Signed-off-by: Stanley Chang <stanley_chang@xxxxxxxxxxx> --- .../devicetree/bindings/usb/realtek,dwc3.yaml | 107 ++++++++++++++++++ 1 file changed, 107 insertions(+) create mode 100644 Documentation/devicetree/bindings/usb/realtek,dwc3.yaml diff --git a/Documentation/devicetree/bindings/usb/realtek,dwc3.yaml b/Documentation/devicetree/bindings/usb/realtek,dwc3.yaml new file mode 100644 index 000000000000..74d388809924 --- /dev/null +++ b/Documentation/devicetree/bindings/usb/realtek,dwc3.yaml @@ -0,0 +1,107 @@ +# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause) +# Copyright 2023 Realtek Semiconductor Corporation +%YAML 1.2 +--- +$id: "http://devicetree.org/schemas/usb/realtek,dwc3.yaml#"; +$schema: "http://devicetree.org/meta-schemas/core.yaml#"; + +title: Realtek DWC3 USB SoC Controller Glue + +maintainers: + - Stanley Chang <stanley_chang@xxxxxxxxxxx> + +description: + The Realtek DHC SoC embeds a DWC3 USB IP Core configured for USB 2.0 + and USB 3.0 in host or dual-role mode. + +properties: + compatible: + items: + - enum: + - realtek,rtd1295-dwc3 + - realtek,rtd1315e-dwc3 + - realtek,rtd1319-dwc3 + - realtek,rtd1319d-dwc3 + - realtek,rtd1395-dwc3 + - realtek,rtd1619-dwc3 + - realtek,rtd1619b-dwc3 + - const: realtek,rtd-dwc3 + + reg: + maxItems: 1 + + '#address-cells': + const: 1 + + '#size-cells': + const: 1 + + ranges: true + + realtek,unlink-usb3-port: + description: Disable link between USB 3.0 PHY and USB mac. + Only for RTD1619 SoC, if the board design support maximum 2.0 speed. + type: boolean + + realtek,disable-usb3-phy: + description: Close USB 3.0 PHY if the board design not support USB 3.0. + type: boolean + + realtek,enable-l4icg: + description: Enable the power saving feature l4icg by hardware clock. + gating. + type: boolean + +patternProperties: + "^usb@[0-9a-f]+$": + $ref: snps,dwc3.yaml# + description: Required child node + +required: + - compatible + - reg + - "#address-cells" + - "#size-cells" + - ranges + +allOf: + - if: + not: + properties: + compatible: + contains: + enum: + - realtek,rtd1619-dwc3 + then: + properties: + realtek,unlink-usb3-port: false + +additionalProperties: false + +examples: + - | + usb@98013e00 { + compatible = "realtek,rtd1319d-dwc3", "realtek,rtd-dwc3"; + reg = <0x98013e00 0x200>; + #address-cells = <1>; + #size-cells = <1>; + ranges; + status = "okay"; + realtek,disable-usb3-phy; + realtek,enable-l4icg; + + usb@98050000 { + compatible = "snps,dwc3"; + reg = <0x98050000 0x9000>; + interrupts = <0 94 4>; + phys = <&usb2phy &usb3phy>; + phy-names = "usb2-phy", "usb3-phy"; + dr_mode = "otg"; + usb-role-switch; + role-switch-default-mode = "host"; + snps,dis_u2_susphy_quirk; + snps,parkmode-disable-ss-quirk; + snps,parkmode-disable-hs-quirk; + maximum-speed = "high-speed"; + }; + }; -- 2.34.1
