diff options
Diffstat (limited to 'Documentation/devicetree/bindings/usb')
21 files changed, 455 insertions, 66 deletions
diff --git a/Documentation/devicetree/bindings/usb/analogix,anx7411.yaml b/Documentation/devicetree/bindings/usb/analogix,anx7411.yaml index e4d893369d57bf..3f5857aee3b0e9 100644 --- a/Documentation/devicetree/bindings/usb/analogix,anx7411.yaml +++ b/Documentation/devicetree/bindings/usb/analogix,anx7411.yaml @@ -23,24 +23,11 @@ properties: connector: type: object $ref: ../connector/usb-connector.yaml - unevaluatedProperties: false - - description: - Properties for usb c connector. properties: compatible: const: usb-c-connector - power-role: true - - data-role: true - - try-power-role: true - - required: - - compatible - required: - compatible - reg diff --git a/Documentation/devicetree/bindings/usb/ci-hdrc-usb2.yaml b/Documentation/devicetree/bindings/usb/ci-hdrc-usb2.yaml index b7e664f7395b33..3b56e0edb1c676 100644 --- a/Documentation/devicetree/bindings/usb/ci-hdrc-usb2.yaml +++ b/Documentation/devicetree/bindings/usb/ci-hdrc-usb2.yaml @@ -313,7 +313,7 @@ properties: usb-phy: description: phandle for the PHY device. Use "phys" instead. - $ref: /schemas/types.yaml#/definitions/phandle + maxItems: 1 deprecated: true fsl,usbphy: diff --git a/Documentation/devicetree/bindings/usb/fcs,fsa4480.yaml b/Documentation/devicetree/bindings/usb/fcs,fsa4480.yaml index f9410eb76a621a..8b25b9a01ced35 100644 --- a/Documentation/devicetree/bindings/usb/fcs,fsa4480.yaml +++ b/Documentation/devicetree/bindings/usb/fcs,fsa4480.yaml @@ -27,13 +27,8 @@ properties: vcc-supply: description: power supply (2.7V-5.5V) - mode-switch: - description: Flag the port as possible handle of altmode switching - type: boolean - - orientation-switch: - description: Flag the port as possible handler of orientation switching - type: boolean + mode-switch: true + orientation-switch: true port: $ref: /schemas/graph.yaml#/$defs/port-base @@ -79,6 +74,9 @@ required: - reg - port +allOf: + - $ref: usb-switch.yaml# + additionalProperties: false examples: diff --git a/Documentation/devicetree/bindings/usb/generic-ehci.yaml b/Documentation/devicetree/bindings/usb/generic-ehci.yaml index 87986c45be88ef..2ed178f16a7822 100644 --- a/Documentation/devicetree/bindings/usb/generic-ehci.yaml +++ b/Documentation/devicetree/bindings/usb/generic-ehci.yaml @@ -77,6 +77,7 @@ properties: - const: usb-ehci - enum: - generic-ehci + - marvell,ac5-ehci - marvell,armada-3700-ehci - marvell,orion-ehci - nuvoton,npcm750-ehci diff --git a/Documentation/devicetree/bindings/usb/gpio-sbu-mux.yaml b/Documentation/devicetree/bindings/usb/gpio-sbu-mux.yaml index d3b2b666ec2a4c..88e1607cf053ac 100644 --- a/Documentation/devicetree/bindings/usb/gpio-sbu-mux.yaml +++ b/Documentation/devicetree/bindings/usb/gpio-sbu-mux.yaml @@ -33,13 +33,8 @@ properties: vcc-supply: description: power supply - mode-switch: - description: Flag the port as possible handle of altmode switching - type: boolean - - orientation-switch: - description: Flag the port as possible handler of orientation switching - type: boolean + mode-switch: true + orientation-switch: true port: $ref: /schemas/graph.yaml#/properties/port @@ -54,6 +49,9 @@ required: - orientation-switch - port +allOf: + - $ref: usb-switch.yaml# + additionalProperties: false examples: diff --git a/Documentation/devicetree/bindings/usb/hisilicon,hi3798mv200-dwc3.yaml b/Documentation/devicetree/bindings/usb/hisilicon,hi3798mv200-dwc3.yaml new file mode 100644 index 00000000000000..f3011694393d82 --- /dev/null +++ b/Documentation/devicetree/bindings/usb/hisilicon,hi3798mv200-dwc3.yaml @@ -0,0 +1,99 @@ +# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause) +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/usb/hisilicon,hi3798mv200-dwc3.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: HiSilicon Hi3798MV200 DWC3 USB SoC controller + +maintainers: + - Yang Xiwen <forbidden405@foxmail.com> + +properties: + compatible: + const: hisilicon,hi3798mv200-dwc3 + + '#address-cells': + const: 1 + + '#size-cells': + const: 1 + + ranges: true + + clocks: + items: + - description: Controller bus clock + - description: Controller suspend clock + - description: Controller reference clock + - description: Controller gm clock + - description: Controller gs clock + - description: Controller utmi clock + - description: Controller pipe clock + + clock-names: + items: + - const: bus + - const: suspend + - const: ref + - const: gm + - const: gs + - const: utmi + - const: pipe + + resets: + maxItems: 1 + + reset-names: + const: soft + +patternProperties: + '^usb@[0-9a-f]+$': + $ref: snps,dwc3.yaml# + +required: + - compatible + - ranges + - '#address-cells' + - '#size-cells' + - clocks + - clock-names + - resets + - reset-names + +additionalProperties: false + +examples: + - | + #include <dt-bindings/interrupt-controller/arm-gic.h> + + usb { + compatible = "hisilicon,hi3798mv200-dwc3"; + ranges; + #address-cells = <1>; + #size-cells = <1>; + clocks = <&clk_bus>, + <&clk_suspend>, + <&clk_ref>, + <&clk_gm>, + <&clk_gs>, + <&clk_utmi>, + <&clk_pipe>; + clock-names = "bus", "suspend", "ref", "gm", "gs", "utmi", "pipe"; + resets = <&crg 0xb0 12>; + reset-names = "soft"; + + usb@98a0000 { + compatible = "snps,dwc3"; + reg = <0x98a0000 0x10000>; + interrupts = <GIC_SPI 69 IRQ_TYPE_LEVEL_HIGH>; + clocks = <&clk_bus>, + <&clk_suspend>, + <&clk_ref>; + clock-names = "bus_early", "suspend", "ref"; + phys = <&usb2_phy1_port2>, <&combphy0 0>; + phy-names = "usb2-phy", "usb3-phy"; + maximum-speed = "super-speed"; + dr_mode = "host"; + }; + }; diff --git a/Documentation/devicetree/bindings/usb/ite,it5205.yaml b/Documentation/devicetree/bindings/usb/ite,it5205.yaml new file mode 100644 index 00000000000000..36ec4251b5f208 --- /dev/null +++ b/Documentation/devicetree/bindings/usb/ite,it5205.yaml @@ -0,0 +1,72 @@ +# SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/usb/ite,it5205.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: ITE IT5202 Type-C USB Alternate Mode Passive MUX + +maintainers: + - AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com> + - Tianping Fang <tianping.fang@mediatek.com> + +properties: + compatible: + const: ite,it5205 + + reg: + maxItems: 1 + + vcc-supply: + description: Power supply for VCC pin (3.3V) + + mode-switch: + description: Flag the port as possible handle of altmode switching + type: boolean + + orientation-switch: + description: Flag the port as possible handler of orientation switching + type: boolean + + ite,ovp-enable: + description: Enable Over Voltage Protection functionality + type: boolean + + port: + $ref: /schemas/graph.yaml#/properties/port + description: + A port node to link the IT5205 to a TypeC controller for the purpose of + handling altmode muxing and orientation switching. + +required: + - compatible + - reg + - orientation-switch + - port + +additionalProperties: false + +examples: + - | + #include <dt-bindings/interrupt-controller/irq.h> + i2c2 { + #address-cells = <1>; + #size-cells = <0>; + + typec-mux@48 { + compatible = "ite,it5205"; + reg = <0x48>; + + mode-switch; + orientation-switch; + + vcc-supply = <&mt6359_vibr_ldo_reg>; + + port { + it5205_usbss_sbu: endpoint { + remote-endpoint = <&typec_controller>; + }; + }; + }; + }; +... diff --git a/Documentation/devicetree/bindings/usb/mediatek,mtu3.yaml b/Documentation/devicetree/bindings/usb/mediatek,mtu3.yaml index a59d91243ac836..d4e187c78a0b52 100644 --- a/Documentation/devicetree/bindings/usb/mediatek,mtu3.yaml +++ b/Documentation/devicetree/bindings/usb/mediatek,mtu3.yaml @@ -185,7 +185,10 @@ properties: 2 - used by mt2712 etc, revision 2 with following IPM rule; 101 - used by mt8183, specific 1.01; 102 - used by mt8192, specific 1.02; - enum: [1, 2, 101, 102] + 103 - used by mt8195, IP0, specific 1.03; + 105 - used by mt8195, IP2, specific 1.05; + 106 - used by mt8195, IP3, specific 1.06; + enum: [1, 2, 101, 102, 103, 105, 106] mediatek,u3p-dis-msk: $ref: /schemas/types.yaml#/definitions/uint32 diff --git a/Documentation/devicetree/bindings/usb/microchip,usb5744.yaml b/Documentation/devicetree/bindings/usb/microchip,usb5744.yaml index 445183d9d6db1a..e2a72deae77601 100644 --- a/Documentation/devicetree/bindings/usb/microchip,usb5744.yaml +++ b/Documentation/devicetree/bindings/usb/microchip,usb5744.yaml @@ -72,8 +72,6 @@ allOf: i2c-bus: false else: $ref: /schemas/usb/usb-device.yaml - required: - - peer-hub additionalProperties: false diff --git a/Documentation/devicetree/bindings/usb/nxp,ptn36502.yaml b/Documentation/devicetree/bindings/usb/nxp,ptn36502.yaml index eee548ac1abea3..d805dde80796f3 100644 --- a/Documentation/devicetree/bindings/usb/nxp,ptn36502.yaml +++ b/Documentation/devicetree/bindings/usb/nxp,ptn36502.yaml @@ -20,13 +20,8 @@ properties: vdd18-supply: description: Power supply for VDD18 pin - retimer-switch: - description: Flag the port as possible handle of SuperSpeed signals retiming - type: boolean - - orientation-switch: - description: Flag the port as possible handler of orientation switching - type: boolean + orientation-switch: true + retimer-switch: true ports: $ref: /schemas/graph.yaml#/properties/ports @@ -49,6 +44,9 @@ required: - compatible - reg +allOf: + - $ref: usb-switch.yaml# + additionalProperties: false examples: diff --git a/Documentation/devicetree/bindings/usb/nxp,ptn5110.yaml b/Documentation/devicetree/bindings/usb/nxp,ptn5110.yaml index eaedb4cc6b6cce..65a8632b4d9ed8 100644 --- a/Documentation/devicetree/bindings/usb/nxp,ptn5110.yaml +++ b/Documentation/devicetree/bindings/usb/nxp,ptn5110.yaml @@ -11,7 +11,9 @@ maintainers: properties: compatible: - const: nxp,ptn5110 + items: + - const: nxp,ptn5110 + - const: tcpci reg: maxItems: 1 @@ -41,7 +43,7 @@ examples: #size-cells = <0>; tcpci@50 { - compatible = "nxp,ptn5110"; + compatible = "nxp,ptn5110", "tcpci"; reg = <0x50>; interrupt-parent = <&gpio3>; interrupts = <3 IRQ_TYPE_LEVEL_LOW>; diff --git a/Documentation/devicetree/bindings/usb/onnn,nb7vpq904m.yaml b/Documentation/devicetree/bindings/usb/onnn,nb7vpq904m.yaml index c0201da002f629..589914d22bf250 100644 --- a/Documentation/devicetree/bindings/usb/onnn,nb7vpq904m.yaml +++ b/Documentation/devicetree/bindings/usb/onnn,nb7vpq904m.yaml @@ -21,14 +21,8 @@ properties: description: power supply (1.8V) enable-gpios: true - - retimer-switch: - description: Flag the port as possible handle of SuperSpeed signals retiming - type: boolean - - orientation-switch: - description: Flag the port as possible handler of orientation switching - type: boolean + orientation-switch: true + retimer-switch: true ports: $ref: /schemas/graph.yaml#/properties/ports @@ -95,6 +89,9 @@ required: - compatible - reg +allOf: + - $ref: usb-switch.yaml# + additionalProperties: false examples: diff --git a/Documentation/devicetree/bindings/usb/qcom,dwc3.yaml b/Documentation/devicetree/bindings/usb/qcom,dwc3.yaml index 63d150b216c528..38a3404ec71bbb 100644 --- a/Documentation/devicetree/bindings/usb/qcom,dwc3.yaml +++ b/Documentation/devicetree/bindings/usb/qcom,dwc3.yaml @@ -102,7 +102,7 @@ properties: description: | Different types of interrupts are used based on HS PHY used on target: - pwr_event: Used for wakeup based on other power events. - - hs_phY_irq: Apart from DP/DM/QUSB2 PHY interrupts, there is + - hs_phy_irq: Apart from DP/DM/QUSB2 PHY interrupts, there is hs_phy_irq which is not triggered by default and its functionality is mutually exclusive to that of {dp/dm}_hs_phy_irq and qusb2_phy_irq. diff --git a/Documentation/devicetree/bindings/usb/qcom,pmic-typec.yaml b/Documentation/devicetree/bindings/usb/qcom,pmic-typec.yaml index 55df3129a0bc73..d9694570c419e8 100644 --- a/Documentation/devicetree/bindings/usb/qcom,pmic-typec.yaml +++ b/Documentation/devicetree/bindings/usb/qcom,pmic-typec.yaml @@ -14,8 +14,19 @@ description: properties: compatible: - enum: - - qcom,pm8150b-typec + oneOf: + - enum: + - qcom,pmi632-typec + - qcom,pm8150b-typec + - items: + - enum: + - qcom,pm6150-typec + - const: qcom,pm8150b-typec + - items: + - enum: + - qcom,pm4125-typec + - const: qcom,pmi632-typec + connector: type: object @@ -24,9 +35,11 @@ properties: reg: description: Type-C port and pdphy SPMI register base offsets + minItems: 1 maxItems: 2 interrupts: + minItems: 8 items: - description: Type-C CC attach notification, VBUS error, tCCDebounce done - description: Type-C VCONN powered @@ -46,6 +59,7 @@ properties: - description: Power Domain Fast Role Swap event interrupt-names: + minItems: 8 items: - const: or-rid-detect-change - const: vpd-detect @@ -81,7 +95,33 @@ required: - interrupts - interrupt-names - vdd-vbus-supply - - vdd-pdphy-supply + +allOf: + - if: + properties: + compatible: + contains: + enum: + - qcom,pmi632-typec + then: + properties: + reg: + maxItems: 1 + interrupts: + maxItems: 8 + interrupt-names: + maxItems: 8 + vdd-pdphy-supply: false + else: + properties: + reg: + maxItems: 2 + interrupts: + minItems: 16 + interrupt-names: + maxItems: 16 + required: + - vdd-pdphy-supply additionalProperties: false diff --git a/Documentation/devicetree/bindings/usb/qcom,wcd939x-usbss.yaml b/Documentation/devicetree/bindings/usb/qcom,wcd939x-usbss.yaml index 7ddfd3313a1858..96346723f3e9c9 100644 --- a/Documentation/devicetree/bindings/usb/qcom,wcd939x-usbss.yaml +++ b/Documentation/devicetree/bindings/usb/qcom,wcd939x-usbss.yaml @@ -35,13 +35,8 @@ properties: vdd-supply: description: USBSS VDD power supply - mode-switch: - description: Flag the port as possible handle of altmode switching - type: boolean - - orientation-switch: - description: Flag the port as possible handler of orientation switching - type: boolean + mode-switch: true + orientation-switch: true ports: $ref: /schemas/graph.yaml#/properties/ports @@ -63,6 +58,9 @@ required: - reg - ports +allOf: + - $ref: usb-switch.yaml# + additionalProperties: false examples: diff --git a/Documentation/devicetree/bindings/usb/realtek,rts5411.yaml b/Documentation/devicetree/bindings/usb/realtek,rts5411.yaml index f0784d2e86dae0..0874fc21f66fbb 100644 --- a/Documentation/devicetree/bindings/usb/realtek,rts5411.yaml +++ b/Documentation/devicetree/bindings/usb/realtek,rts5411.yaml @@ -21,6 +21,12 @@ properties: reg: true + '#address-cells': + const: 1 + + '#size-cells': + const: 0 + vdd-supply: description: phandle to the regulator that provides power to the hub. @@ -30,6 +36,36 @@ properties: description: phandle to the peer hub on the controller. + ports: + $ref: /schemas/graph.yaml#/properties/ports + + properties: + port@1: + $ref: /schemas/graph.yaml#/properties/port + description: + 1st downstream facing USB port + + port@2: + $ref: /schemas/graph.yaml#/properties/port + description: + 2nd downstream facing USB port + + port@3: + $ref: /schemas/graph.yaml#/properties/port + description: + 3rd downstream facing USB port + + port@4: + $ref: /schemas/graph.yaml#/properties/port + description: + 4th downstream facing USB port + +patternProperties: + '^.*@[1-4]$': + description: The hard wired USB devices + type: object + $ref: /schemas/usb/usb-device.yaml + required: - peer-hub - compatible @@ -50,6 +86,13 @@ examples: reg = <1>; vdd-supply = <&pp3300_hub>; peer-hub = <&hub_3_0>; + #address-cells = <1>; + #size-cells = <0>; + /* USB 2.0 device on port 2 */ + device@2 { + compatible = "usb123,4567"; + reg = <2>; + }; }; /* 3.0 hub on port 2 */ @@ -58,5 +101,17 @@ examples: reg = <2>; vdd-supply = <&pp3300_hub>; peer-hub = <&hub_2_0>; + + ports { + #address-cells = <1>; + #size-cells = <0>; + /* Type-A connector on port 4 */ + port@4 { + reg = <4>; + endpoint { + remote-endpoint = <&usb_a0_ss>; + }; + }; + }; }; }; diff --git a/Documentation/devicetree/bindings/usb/ti,am62-usb.yaml b/Documentation/devicetree/bindings/usb/ti,am62-usb.yaml index fec5651f560296..f6e6d084d1c5a7 100644 --- a/Documentation/devicetree/bindings/usb/ti,am62-usb.yaml +++ b/Documentation/devicetree/bindings/usb/ti,am62-usb.yaml @@ -14,7 +14,10 @@ properties: const: ti,am62-usb reg: - maxItems: 1 + minItems: 1 + items: + - description: USB CFG register space + - description: USB PHY2 register space ranges: true @@ -82,7 +85,8 @@ examples: usbss1: usb@f910000 { compatible = "ti,am62-usb"; - reg = <0x00 0x0f910000 0x00 0x800>; + reg = <0x00 0x0f910000 0x00 0x800>, + <0x00 0x0f918000 0x00 0x400>; clocks = <&k3_clks 162 3>; clock-names = "ref"; ti,syscon-phy-pll-refclk = <&wkup_conf 0x4018>; diff --git a/Documentation/devicetree/bindings/usb/ti,usb8020b.yaml b/Documentation/devicetree/bindings/usb/ti,usb8020b.yaml new file mode 100644 index 00000000000000..8ef117793e1132 --- /dev/null +++ b/Documentation/devicetree/bindings/usb/ti,usb8020b.yaml @@ -0,0 +1,69 @@ +# SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/usb/ti,usb8020b.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: TI USB8020B USB 3.0 hub controller + +maintainers: + - Macpaul Lin <macpaul.lin@mediatek.com> + +allOf: + - $ref: usb-device.yaml# + +properties: + compatible: + enum: + - usb451,8025 + - usb451,8027 + + reg: true + + reset-gpios: + items: + - description: GPIO specifier for GRST# pin. + + vdd-supply: + description: + VDD power supply to the hub + + peer-hub: + $ref: /schemas/types.yaml#/definitions/phandle + description: + phandle to the peer hub on the controller. + +required: + - compatible + - reg + - peer-hub + +additionalProperties: false + +examples: + - | + #include <dt-bindings/gpio/gpio.h> + + usb { + dr_mode = "host"; + #address-cells = <1>; + #size-cells = <0>; + + /* 2.0 hub on port 1 */ + hub_2_0: hub@1 { + compatible = "usb451,8027"; + reg = <1>; + peer-hub = <&hub_3_0>; + reset-gpios = <&pio 7 GPIO_ACTIVE_HIGH>; + vdd-supply = <&usb_hub_fixed_3v3>; + }; + + /* 3.0 hub on port 2 */ + hub_3_0: hub@2 { + compatible = "usb451,8025"; + reg = <2>; + peer-hub = <&hub_2_0>; + reset-gpios = <&pio 7 GPIO_ACTIVE_HIGH>; + vdd-supply = <&usb_hub_fixed_3v3>; + }; + }; diff --git a/Documentation/devicetree/bindings/usb/usb-nop-xceiv.yaml b/Documentation/devicetree/bindings/usb/usb-nop-xceiv.yaml index 6734f4d3aa789f..9b3ea23654af6e 100644 --- a/Documentation/devicetree/bindings/usb/usb-nop-xceiv.yaml +++ b/Documentation/devicetree/bindings/usb/usb-nop-xceiv.yaml @@ -37,10 +37,11 @@ properties: description: Should specify the GPIO detecting a VBus insertion maxItems: 1 - vbus-regulator: - description: Should specify the regulator supplying current drawn from - the VBus line. - $ref: /schemas/types.yaml#/definitions/phandle + vbus-supply: + description: regulator supplying VBUS. It will be enabled and disabled + dynamically in OTG mode. If the regulator is controlled by a + GPIO line, this should be modeled as a regulator-fixed and + referenced by this supply. wakeup-source: description: @@ -65,7 +66,7 @@ examples: vcc-supply = <&hsusb1_vcc_regulator>; reset-gpios = <&gpio1 7 GPIO_ACTIVE_LOW>; vbus-detect-gpio = <&gpio2 13 GPIO_ACTIVE_HIGH>; - vbus-regulator = <&vbus_regulator>; + vbus-supply = <&vbus_regulator>; #phy-cells = <0>; }; diff --git a/Documentation/devicetree/bindings/usb/usb-switch.yaml b/Documentation/devicetree/bindings/usb/usb-switch.yaml new file mode 100644 index 00000000000000..da76118e73a53c --- /dev/null +++ b/Documentation/devicetree/bindings/usb/usb-switch.yaml @@ -0,0 +1,67 @@ +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/usb/usb-switch.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: USB Orientation and Mode Switches Common Properties + +maintainers: + - Greg Kroah-Hartman <gregkh@linuxfoundation.org> + +description: + Common properties for devices handling USB mode and orientation switching. + +properties: + mode-switch: + description: Possible handler of altmode switching + type: boolean + + orientation-switch: + description: Possible handler of orientation switching + type: boolean + + retimer-switch: + description: Possible handler of SuperSpeed signals retiming + type: boolean + + port: + $ref: /schemas/graph.yaml#/properties/port + description: + A port node to link the device to a TypeC controller for the purpose of + handling altmode muxing and orientation switching. + + ports: + $ref: /schemas/graph.yaml#/properties/ports + properties: + port@0: + $ref: /schemas/graph.yaml#/properties/port + description: + Super Speed (SS) Output endpoint to the Type-C connector + + port@1: + $ref: /schemas/graph.yaml#/$defs/port-base + description: + Super Speed (SS) Input endpoint from the Super-Speed PHY + unevaluatedProperties: false + + properties: + endpoint: + $ref: /schemas/graph.yaml#/$defs/endpoint-base + unevaluatedProperties: false + properties: + data-lanes: + $ref: /schemas/types.yaml#/definitions/uint32-array + minItems: 1 + maxItems: 8 + uniqueItems: true + items: + maximum: 8 + +oneOf: + - required: + - port + - required: + - ports + +additionalProperties: true diff --git a/Documentation/devicetree/bindings/usb/usb.yaml b/Documentation/devicetree/bindings/usb/usb.yaml index 326b14f05d1c41..1761b7aa92f052 100644 --- a/Documentation/devicetree/bindings/usb/usb.yaml +++ b/Documentation/devicetree/bindings/usb/usb.yaml @@ -25,6 +25,8 @@ properties: usb-phy: $ref: /schemas/types.yaml#/definitions/phandle-array + items: + maxItems: 1 description: List of all the USB PHYs on this HCD to be accepted by the legacy USB Physical Layer subsystem. |