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Introduction

A firmware update to the USB controller may solve USB or Ethernet connectivity issues on the Dragonwing RB3 Gen 2 device.

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Prerequisites

  • Ensure that you upgrade the software as described in Update the software before updating the Renesas firmware.
  • Ensure that you install the ADB tool. Fastboot comes installed along with it.
  • Connect the device to the Ubuntu host computer using a USB Type-C cable.

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Procedure

  • Register and sign in to Renesas.
  • Download the firmware from Renesas.
  • Rename the downloaded firmware file to renesas_usb_fw.mem.
  • Connect the device to the host computer using ADB.
  • Push the firmware to the device using one of the following commands: 
    adb push renesas_usb_fw.mem /lib/firmware
    OR 
    scp renesas_usb_fw.mem root@<ip-address-of-device>:/lib/firmware
    Sample command
    scp renesas_usb_fw.mem root@10.92.175.138:/lib/firmware
  • Activate the firmware using either of the following options:
    • Reboot target for USB type A ports.
    • Manually bind the Renesas xHCI driver:
    echo "0001:04:00.0" > /sys/bus/pci/drivers/xhci-pci-renesas/bind
  • Retrieve the device ID: 
    sh-5.3# lspci
    In the following sample output, 0001:04:00.0 is the device ID:
    Sample output
    0001:00:00.0 PCI bridge: Qualcomm Technologies, Inc SM8250 PCIe Root Complex [Snapdragon 865/870 5G]
0001:01:00.0 PCI bridge: Toshiba Corporation Device 0623
0001:02:01.0 PCI bridge: Toshiba Corporation Device 0623
0001:02:02.0 PCI bridge: Toshiba Corporation Device 0623
0001:02:03.0 PCI bridge: Toshiba Corporation Device 0623
0001:04:00.0 USB controller: Renesas Electronics Corp. uPD720201 USB 3.0 Host Controller (rev 03)
0001:05:00.0 Ethernet controller: Toshiba Corporation Device 0220
0001:05:00.1 Ethernet controller: Toshiba Corporation Device 0220
  • Verify firmware enumeration: 
    dmesg