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| -rw-r--r-- | Documentation/devicetree/bindings/usb/aspeed,usb-vhub.yaml | 139 |
1 files changed, 139 insertions, 0 deletions
diff --git a/Documentation/devicetree/bindings/usb/aspeed,usb-vhub.yaml b/Documentation/devicetree/bindings/usb/aspeed,usb-vhub.yaml new file mode 100644 index 000000000..a86bcd951 --- /dev/null +++ b/Documentation/devicetree/bindings/usb/aspeed,usb-vhub.yaml @@ -0,0 +1,139 @@ +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) +# Copyright (c) 2020 Facebook Inc. +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/usb/aspeed,usb-vhub.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: ASPEED USB 2.0 Virtual Hub Controller + +maintainers: + - Benjamin Herrenschmidt <benh@kernel.crashing.org> + +description: |+ + The ASPEED USB 2.0 Virtual Hub Controller implements 1 set of USB Hub + register and several sets of Device and Endpoint registers to support + the Virtual Hub's downstream USB devices. + + Supported number of devices and endpoints vary depending on hardware + revisions. AST2400 and AST2500 Virtual Hub supports 5 downstream devices + and 15 generic endpoints, while AST2600 Virtual Hub supports 7 downstream + devices and 21 generic endpoints. + +properties: + compatible: + enum: + - aspeed,ast2400-usb-vhub + - aspeed,ast2500-usb-vhub + - aspeed,ast2600-usb-vhub + + reg: + maxItems: 1 + + clocks: + maxItems: 1 + + interrupts: + maxItems: 1 + + aspeed,vhub-downstream-ports: + description: Number of downstream ports supported by the Virtual Hub + $ref: /schemas/types.yaml#/definitions/uint32 + default: 5 + minimum: 1 + maximum: 7 + + aspeed,vhub-generic-endpoints: + description: Number of generic endpoints supported by the Virtual Hub + $ref: /schemas/types.yaml#/definitions/uint32 + default: 15 + minimum: 1 + maximum: 21 + + vhub-vendor-id: + description: vhub Vendor ID + $ref: /schemas/types.yaml#/definitions/uint32 + maximum: 65535 + + vhub-product-id: + description: vhub Product ID + $ref: /schemas/types.yaml#/definitions/uint32 + maximum: 65535 + + vhub-device-revision: + description: vhub Device Revision in binary-coded decimal + $ref: /schemas/types.yaml#/definitions/uint32 + maximum: 65535 + + vhub-strings: + type: object + additionalProperties: false + + properties: + '#address-cells': + const: 1 + + '#size-cells': + const: 0 + + patternProperties: + '^string@[0-9a-f]+$': + type: object + additionalProperties: false + description: string descriptors of the specific language + + properties: + reg: + maxItems: 1 + description: 16-bit Language Identifier defined by USB-IF + + manufacturer: + description: vhub manufacturer + $ref: /schemas/types.yaml#/definitions/string + + product: + description: vhub product name + $ref: /schemas/types.yaml#/definitions/string + + serial-number: + description: vhub device serial number + $ref: /schemas/types.yaml#/definitions/string + +required: + - compatible + - reg + - clocks + - interrupts + - aspeed,vhub-downstream-ports + - aspeed,vhub-generic-endpoints + +additionalProperties: false + +examples: + - | + #include <dt-bindings/clock/aspeed-clock.h> + vhub: usb-vhub@1e6a0000 { + compatible = "aspeed,ast2500-usb-vhub"; + reg = <0x1e6a0000 0x300>; + interrupts = <5>; + clocks = <&syscon ASPEED_CLK_GATE_USBPORT1CLK>; + aspeed,vhub-downstream-ports = <5>; + aspeed,vhub-generic-endpoints = <15>; + pinctrl-names = "default"; + pinctrl-0 = <&pinctrl_usb2ad_default>; + + vhub-vendor-id = <0x1d6b>; + vhub-product-id = <0x0107>; + vhub-device-revision = <0x0100>; + vhub-strings { + #address-cells = <1>; + #size-cells = <0>; + + string@409 { + reg = <0x409>; + manufacturer = "ASPEED"; + product = "USB Virtual Hub"; + serial-number = "0000"; + }; + }; + }; |