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# SPDX-License-Identifier: GPL-2.0
%YAML 1.2
---
$id: http://devicetree.org/schemas/usb/generic-ehci.yaml#
$schema: http://devicetree.org/meta-schemas/core.yaml#
title: USB EHCI Controller Device Tree Bindings
maintainers:
- Greg Kroah-Hartman <gregkh@linuxfoundation.org>
allOf:
- $ref: "usb-hcd.yaml"
- if:
properties:
compatible:
not:
contains:
const: ibm,usb-ehci-440epx
then:
properties:
reg:
maxItems: 1
properties:
compatible:
contains:
const: generic-ehci
reg:
minItems: 1
maxItems: 2
interrupts:
maxItems: 1
resets:
minItems: 1
maxItems: 4
clocks:
minItems: 1
maxItems: 4
description: |
In case the Renesas R-Car Gen3 SoCs:
- if a host only channel: first clock should be host.
- if a USB DRD channel: first clock should be host and second
one should be peripheral
power-domains:
maxItems: 1
big-endian:
$ref: /schemas/types.yaml#/definitions/flag
description:
Set this flag for HCDs with big endian descriptors and big
endian registers.
big-endian-desc:
$ref: /schemas/types.yaml#/definitions/flag
description:
Set this flag for HCDs with big endian descriptors.
big-endian-regs:
$ref: /schemas/types.yaml#/definitions/flag
description:
Set this flag for HCDs with big endian registers.
has-transaction-translator:
$ref: /schemas/types.yaml#/definitions/flag
description:
Set this flag if EHCI has a Transaction Translator built into
the root hub.
needs-reset-on-resume:
$ref: /schemas/types.yaml#/definitions/flag
description:
Set this flag to force EHCI reset after resume.
companion:
$ref: /schemas/types.yaml#/definitions/phandle
description:
Phandle of a companion.
phys:
description: PHY specifier for the USB PHY
phy-names:
const: usb
iommus:
maxItems: 1
required:
- compatible
- reg
- interrupts
additionalProperties: false
examples:
- |
usb@e0000300 {
compatible = "ibm,usb-ehci-440epx", "generic-ehci";
interrupt-parent = <&UIC0>;
interrupts = <0x1a 4>;
reg = <0xe0000300 90>, <0xe0000390 70>;
big-endian;
};
- |
ehci0: usb@1c14000 {
compatible = "allwinner,sun4i-a10-ehci", "generic-ehci";
reg = <0x01c14000 0x100>;
interrupts = <39>;
clocks = <&ahb_gates 1>;
phys = <&usbphy 1>;
phy-names = "usb";
};
...
|
