2023-08-30 17:31:07 +02:00
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# SPDX-License-Identifier: GPL-2.0
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%YAML 1.2
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---
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$id: http://devicetree.org/schemas/usb/smsc,usb3503.yaml#
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$schema: http://devicetree.org/meta-schemas/core.yaml#
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title: SMSC USB3503 High-Speed Hub Controller
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maintainers:
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- Dongjin Kim <tobetter@gmail.com>
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properties:
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compatible:
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enum:
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- smsc,usb3503
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- smsc,usb3503a
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2023-10-24 12:59:35 +02:00
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- smsc,usb3803
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2023-08-30 17:31:07 +02:00
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reg:
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maxItems: 1
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connect-gpios:
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maxItems: 1
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description: >
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GPIO for connect
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intn-gpios:
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maxItems: 1
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description: >
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GPIO for interrupt
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reset-gpios:
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maxItems: 1
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description: >
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GPIO for reset
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2023-10-24 12:59:35 +02:00
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bypass-gpios:
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maxItems: 1
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description: >
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GPIO for bypass.
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Control signal to select between HUB MODE and BYPASS MODE.
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2023-08-30 17:31:07 +02:00
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disabled-ports:
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$ref: /schemas/types.yaml#/definitions/uint32-array
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minItems: 1
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maxItems: 3
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items:
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minimum: 1
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maximum: 3
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description: >
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Specifies the ports unused using their port number. Do not describe this
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property if all ports have to be enabled.
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initial-mode:
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$ref: /schemas/types.yaml#/definitions/uint32
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description: >
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Specifies initial mode. 1 for Hub mode, 2 for standby mode and 3 for bypass mode.
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In bypass mode the downstream port 3 is connected to the upstream port with low
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switch resistance R_on.
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2023-08-30 17:31:07 +02:00
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clocks:
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maxItems: 1
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description: >
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Clock used for driving REFCLK signal. If not provided the driver assumes
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that clock signal is always available, its rate is specified by REF_SEL
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pins and a value from the primary reference clock frequencies table is
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used.
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clock-names:
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const: refclk
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refclk-frequency:
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$ref: /schemas/types.yaml#/definitions/uint32
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description: >
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Frequency of the REFCLK signal as defined by REF_SEL pins. If not
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provided, driver will not set rate of the REFCLK signal and assume that a
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value from the primary reference clock frequencies table is used.
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required:
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- compatible
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2023-10-24 12:59:35 +02:00
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allOf:
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- if:
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not:
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properties:
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compatible:
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enum:
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- smsc,usb3803
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then:
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properties:
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bypass-gpios: false
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- if:
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required:
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- bypass-gpios
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then:
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properties:
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initial-mode:
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enum: [1, 2, 3]
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else:
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properties:
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initial-mode:
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enum: [1, 2]
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2023-08-30 17:31:07 +02:00
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additionalProperties: false
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examples:
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- |
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i2c {
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#address-cells = <1>;
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#size-cells = <0>;
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usb-hub@8 {
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compatible = "smsc,usb3503";
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reg = <0x08>;
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connect-gpios = <&gpx3 0 1>;
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disabled-ports = <2 3>;
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intn-gpios = <&gpx3 4 1>;
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reset-gpios = <&gpx3 5 1>;
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initial-mode = <1>;
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clocks = <&clks 80>;
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clock-names = "refclk";
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};
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};
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2023-10-24 12:59:35 +02:00
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- |
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i2c {
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#address-cells = <1>;
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#size-cells = <0>;
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usb-hub@8 {
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compatible = "smsc,usb3803";
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reg = <0x08>;
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connect-gpios = <&gpx3 0 1>;
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disabled-ports = <2 3>;
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intn-gpios = <&gpx3 4 1>;
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reset-gpios = <&gpx3 5 1>;
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bypass-gpios = <&gpx3 6 1>;
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initial-mode = <3>;
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clocks = <&clks 80>;
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clock-names = "refclk";
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};
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};
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2023-08-30 17:31:07 +02:00
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- |
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#include <dt-bindings/gpio/gpio.h>
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usb-hub {
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/* I2C is not connected */
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compatible = "smsc,usb3503";
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initial-mode = <1>; /* initialize in HUB mode */
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disabled-ports = <1>;
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intn-gpios = <&pio 7 5 GPIO_ACTIVE_HIGH>; /* PH5 */
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reset-gpios = <&pio 4 16 GPIO_ACTIVE_LOW>; /* PE16 */
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connect-gpios = <&pio 4 17 GPIO_ACTIVE_HIGH>; /* PE17 */
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refclk-frequency = <19200000>;
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};
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...
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