1# SPDX-License-Identifier: GPL-2.0 2%YAML 1.2 3--- 4$id: http://devicetree.org/schemas/usb/generic-ehci.yaml# 5$schema: http://devicetree.org/meta-schemas/core.yaml# 6 7title: USB EHCI Controller Device Tree Bindings 8 9allOf: 10 - $ref: "usb-hcd.yaml" 11 12maintainers: 13 - Greg Kroah-Hartman <gregkh@linuxfoundation.org> 14 15properties: 16 compatible: 17 contains: 18 const: generic-ehci 19 20 reg: 21 maxItems: 1 22 23 interrupts: 24 maxItems: 1 25 26 resets: 27 minItems: 1 28 maxItems: 4 29 30 clocks: 31 minItems: 1 32 maxItems: 4 33 description: | 34 In case the Renesas R-Car Gen3 SoCs: 35 - if a host only channel: first clock should be host. 36 - if a USB DRD channel: first clock should be host and second 37 one should be peripheral 38 39 power-domains: 40 maxItems: 1 41 42 big-endian: 43 $ref: /schemas/types.yaml#/definitions/flag 44 description: 45 Set this flag for HCDs with big endian descriptors and big 46 endian registers. 47 48 big-endian-desc: 49 $ref: /schemas/types.yaml#/definitions/flag 50 description: 51 Set this flag for HCDs with big endian descriptors. 52 53 big-endian-regs: 54 $ref: /schemas/types.yaml#/definitions/flag 55 description: 56 Set this flag for HCDs with big endian registers. 57 58 has-transaction-translator: 59 $ref: /schemas/types.yaml#/definitions/flag 60 description: 61 Set this flag if EHCI has a Transaction Translator built into 62 the root hub. 63 64 needs-reset-on-resume: 65 $ref: /schemas/types.yaml#/definitions/flag 66 description: 67 Set this flag to force EHCI reset after resume. 68 69 companion: 70 $ref: /schemas/types.yaml#/definitions/phandle 71 description: 72 Phandle of a companion. 73 74 phys: 75 description: PHY specifier for the USB PHY 76 77 phy-names: 78 const: usb 79 80required: 81 - compatible 82 - reg 83 - interrupts 84 85additionalProperties: false 86 87examples: 88 - | 89 usb@e0000300 { 90 compatible = "ibm,usb-ehci-440epx", "generic-ehci"; 91 interrupt-parent = <&UIC0>; 92 interrupts = <0x1a 4>; 93 reg = <0 0xe0000300 90 0 0xe0000390 70>; 94 big-endian; 95 }; 96 97 - | 98 ehci0: usb@1c14000 { 99 compatible = "allwinner,sun4i-a10-ehci", "generic-ehci"; 100 reg = <0x01c14000 0x100>; 101 interrupts = <39>; 102 clocks = <&ahb_gates 1>; 103 phys = <&usbphy 1>; 104 phy-names = "usb"; 105 }; 106 107... 108