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|
# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
# Copyright 2019 BayLibre, SAS
%YAML 1.2
---
$id: "http://devicetree.org/schemas/usb/amlogic,meson-g12a-usb-ctrl.yaml#"
$schema: "http://devicetree.org/meta-schemas/core.yaml#"
title: Amlogic Meson G12A DWC3 USB SoC Controller Glue
maintainers:
- Neil Armstrong <narmstrong@baylibre.com>
description: |
The Amlogic G12A embeds a DWC3 USB IP Core configured for USB2 and USB3
in host-only mode, and a DWC2 IP Core configured for USB2 peripheral mode
only.
A glue connects the DWC3 core to USB2 PHYs and optionally to an USB3 PHY.
One of the USB2 PHYs can be re-routed in peripheral mode to a DWC2 USB IP.
The DWC3 Glue controls the PHY routing and power, an interrupt line is
connected to the Glue to serve as OTG ID change detection.
properties:
compatible:
enum:
- amlogic,meson-g12a-usb-ctrl
ranges: true
"#address-cells":
enum: [ 1, 2 ]
"#size-cells":
enum: [ 1, 2 ]
clocks:
minItems: 1
resets:
minItems: 1
reg:
maxItems: 1
interrupts:
maxItems: 1
phy-names:
items:
- const: usb2-phy0 # USB2 PHY0 if USBHOST_A port is used
- const: usb2-phy1 # USB2 PHY1 if USBOTG_B port is used
- const: usb3-phy0 # USB3 PHY if USB3_0 is used
phys:
minItems: 1
maxItems: 3
dr_mode: true
power-domains:
maxItems: 1
vbus-supply:
description: VBUS power supply when used in OTG switchable mode
patternProperties:
"^usb@[0-9a-f]+$":
type: object
additionalProperties: false
required:
- compatible
- "#address-cells"
- "#size-cells"
- ranges
- clocks
- resets
- reg
- interrupts
- phy-names
- phys
- dr_mode
examples:
- |
usb: usb@ffe09000 {
compatible = "amlogic,meson-g12a-usb-ctrl";
reg = <0x0 0xffe09000 0x0 0xa0>;
interrupts = <16>;
#address-cells = <1>;
#size-cells = <1>;
ranges;
clocks = <&clkc_usb>;
resets = <&reset_usb>;
dr_mode = "otg";
phys = <&usb2_phy0>, <&usb2_phy1>, <&usb3_phy0>;
phy-names = "usb2-phy0", "usb2-phy1", "usb3-phy0";
dwc2: usb@ff400000 {
compatible = "amlogic,meson-g12a-usb", "snps,dwc2";
reg = <0xff400000 0x40000>;
interrupts = <31>;
clocks = <&clkc_usb1>;
clock-names = "otg";
phys = <&usb2_phy1>;
dr_mode = "peripheral";
g-rx-fifo-size = <192>;
g-np-tx-fifo-size = <128>;
g-tx-fifo-size = <128 128 16 16 16>;
};
dwc3: usb@ff500000 {
compatible = "snps,dwc3";
reg = <0xff500000 0x100000>;
interrupts = <30>;
dr_mode = "host";
snps,dis_u2_susphy_quirk;
snps,quirk-frame-length-adjustment;
};
};
|
