5ba93f2c13
* Add detailed hardware info for Helios64
- Button
- Ethernet
- Front Panel
- GPIO
- I2C
- Jumper
- LED
- M.2
- PMIC
- PWM Fan
- RTC
- SATA
- SPI
- UEXT
- UPS
- USB
* Cosmetic upgrade and adapt to latest mkdocs-material version
Co-authored-by: nurix <nurix@pnsnc.local>
Co-authored-by: Aditya Prayoga <aditya@kobol.io>
107 lines
3.7 KiB
Markdown
107 lines
3.7 KiB
Markdown
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## USB Controller Types
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There are 3 types of USB controller available on RK3399 SoC. Each type has 2 controllers, so in total there are 6 USB controllers. Below a description of each controller type.
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### Generic OHCI USB 1.1 Controller
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This controller is Host only controller that is compatible with USB 1.1.
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Supported speeds:
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- Full Speed (12 Mbps)
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- Low Speed (1.5 Mbps)
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### Generic EHCI USB 2.0 Controller
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This controller is Host only controller that is compatible with USB 2.0. The controller shared port with
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*Generic OHCI USB 1.1 Controller* therefore any USB 1.1 device connected to the port, will be automatically routed to *Generic OHCI USB 1.1 Controller*.
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Supported speed:
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- High Speed (480 Mbps)
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### Synopsys DesignWare USB 3.0 Dual-Role Device Controller
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This controller support On-The-Go / Dual Role which means it can be configured as Host or as Device.
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Supported speeds:
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- Super Speed (5 Gbps)
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- High Speed (480 Mbps)
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- Full Speed (12 Mbps)
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- Low Speed (1.5 Mbps)
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This controller is connected to RK3399 Type-C PHY.
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## USB on Helios64
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* The first USB 3.0 Dual-Role Device Controller is connected to USB Type-C connector (J15) and configured as OTG with help of [FUSB302](https://www.onsemi.com/products/interfaces/usb-type-c/fusb302).
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* The second USB 3.0 Dual-Role Device Controller is connected to USB Hub 3.1 Gen 1 and configured as Host only.
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* One of EHCI Controller (and OHCI Controller) is connected to M.2 socket.
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### Power Budget
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Each external USB port is protected by a Power Distribution switch with following current limit.
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| Port | Voltage | Maximum Current | Remarks |
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|------------|-------|------------------|---------|
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| USB 3.0 Upper Back Panel | 5V | 900 mA | |
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| USB 3.0 Lower Back Panel | 5V | 900 mA | |
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| USB 3.0 Front Panel | 5V | 900 mA | |
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| Type-C | 5V | 1200 mA | PDO source only |
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## Type-C Functionality on Helios64
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To minimize number of interfaces and cables, Helios64 combined 4 functions into the USB Type-C interface :
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* Serial Console
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* Display Port
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* Host Mode
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* Device Mode (aka DAS mode)
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Helios64 uses an High Speed multiplexer on USB 2.0 signal. By default the USB 2.0 signal is routed to USB Serial Console.
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The multiplexer can be override using [jumper P13](/helios64/jumper/#usb-consolerecovery-mode-p13) or by software via GPIO.
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### Serial Console
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Serial Console of Helios64 is connected to FT232 USB Serial converter and the USB 2.0 signal of the FT232 is connected to USB 2.0 signals of USB Type-C Port.
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### Display Port
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Using USB Type-C to DisplayPort cable, Helios64 can be connected to monitor to display Linux Desktop or others GUI applications.
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Using USB Type-C to HDMI cable/dongle, Helios64 can be connected to a TV and used as a media center.
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*USB Type-C to HDMI dongle*
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*USB Type-C to HDMI cable*
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!!! note
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- DisplayPort Alternate Mode is NOT supported on U-Boot.
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- USB Type-C to HDMI cable might not work if it used DisplayPort dual mode (DP++).
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### Host Mode
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Using OTG cable (Type-C to Type A female) such as,
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Helios64 can act as USB host and can be connected to various USB devices.
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### Device Mode
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Using Type-C to Type A male cable such as,
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Helios64 can be used as Direct Attached Storage (DAS) with the required software configuration. It can also be used as "USB eMMC reader/writer" during system recovery mode.
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