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MIO-5355 Yocto User Guide

Product Introduction​

Product Features​

  • Qualcomm® QCS6490/QCS5430 on 3.5" SBC, support extend operating temperature -20~70°C
  • Powerful but Low Power with 8x Kryo 670 CPU from 1.9 up to 2.7 GHz + Adreno GPU 643 + up to 12.3 TOPs iNPU
  • Rugged Design with On-board 8GB LPDDR5 and 128GB UFS or eMMC
  • Flexible Displays with HDMI and LVDS or eDP & Rich I/Os: 2x GbE, 6x USB, 4x COM, 2x MIPI-CSI, 1x Audio
  • 3x M.2 Expansions: M.2 E-Key 2230 for WiFi/BT, M.2 B-Key 3052 for 4G/LTE, M.2 B-Key 2280 for NVMe Storage
  • Various OS Support: Yocto, Windows on Arm and Ubuntu

MIO-5355

Hardware Interface Introduction​

Layout​

TOPSIDE

BOTTOMSIDE

Switch / Jumper Settings​

SW1

  • SW1 ( 1-on ) : USB EDL Mode (Forced Recovery)
  • SW1 ( 1-off ) : Normal Boot
  • SW1 ( 2-on ) : AT Mode
  • SW1 ( 2-off ) : ATX Mode
  • SW1 ( 3-on ) : UFS
  • SW1 ( 3-off ) : EMMC
  • SW1 ( 4-on ) : LVDS (DVT Support)
  • SW1 ( 4-off ) : eDP (DVT Support)

SW2

  • LVDS Resolution setting

LVDS_Resolution

SW3

  • SW3 ( 1-on ) : COM1 TERM RX Enable
  • SW3 ( 1-off ) : COM1 TERM RX Disable
  • SW3 ( 2-on ) : COM2 TERM RX Enable
  • SW3 ( 2-off ) : COM2 TERM RX Disable

VDD1

  • VDD1 ( Select 1,3 ): 3.3V
  • VDD1 ( Select 3,5 ): 5V
  • VDD1 ( Select 3,4 ): 12V

OS Download​

Yocto 4.0: 2025-10-14

Recovery & Rescue Method​

  1. Download the Qualcomm Software Center

  2. Open the Qualcomm Software Center

  3. Search "PCAT" in the search bar

    Search PCAT

  4. Click Qualcomm® Product Configuration Assistant Tool

  5. Select Qualcomm® Product Configuration Assistant Tool version

    • Version: 2.33.2.119

    PCAT Version

  6. Install Qualcomm® Product Configuration Assistant Tool 2.33.2.119

  7. Search "QUTS" in the search bar

    QUTS Search

  8. Click the Qualcomm® Unified Tools Services

  9. Select Qualcomm® Unified Tools Services version

    • Version : 1.75.2.9

  10. Install Qualcomm® Unified Tools Services 1.75.2.9

    QUTS Version

  11. You will find the new application in your Windows system.

    New Tools

  12. Unzip the UFS File and eMMC File. For example:

    • mio5355a1_yocto4.0.18-le1.1_v2.0.0_kernel-6.6.28_qcs6490_8g_emmc_2025-10-14.tgz
    • mio5355a1_yocto4.0.18-le1.1_v2.0.0_kernel-6.6.28_qcs6490_8g_ufs_2025-10-14.tgz

  13. Connect your device via Micro USB.

  14. If your PC cannot identify the USB, please download the "Qualcomm USB Driver".

  15. Search "Qualcomm USB Driver" in the search bar, then install the driver.

    USB Driver

Flash UFS​

For confirmation, we will erase the partition before UFS installation.

  1. Change the SW1

    • Flash UFS: the SW1 switch to 1-on, 3-on

  2. Turn on the power

  3. Open "PCATApp" Tool

  4. Select "Qualcomm HS-USB QDLoader 9008" and click connect

    Connect

  5. When you connected successfully, it will show green words: Qualcomm HS-USB QDLoader 9008 (COM 11)

    Connected

  6. Select UFS Folder in PCAT Tool, the Tool will help load Files automatically and Select "MEMORY_TYPE_UFS"

    Select

  7. Select provision button

    Provision Button

    Provision Icon

  8. Add the prog_firehose_ddr.elf and provision_ufs31.xml in UFS folder.

    UFS Provision

  9. Then press "OK", it will start to do USF Provision.

    Provision Running

  10. When the Provision finished, you can see the result in message window.

    Provision Log

  11. Click "Download"

    UFS Download

  12. UFS Download completed

    UFS Finished

  13. When you finish the download process, please change the switch.

    • Flash UFS: the SW1 switch to 1-off

Flash eMMC​

  1. Turn off the Power

  2. Change the SW1

    • Flash eMMC: the SW1 switch to 1-on, 3-off

  3. Turn on the power

  4. Make sure the device connection status.

  5. If the device disconnects with PCAT Tool, please connect it again.

    Connect

  6. Select EMMC Folder in PCAT Tool, the Tool will help load Files automatically and Select "MEMORY_TYPE_EMMC"

    EMMC Select

  7. Make sure the setting, then press "Download" button.

    EMMC Flash

  8. eMMC Download completed

    EMMC Finished

  9. When the eMMC installation finished, Close the PCAT tool.

  10. Please remove the Micro USB cable, turn off the power.

  11. eMMC boot up: SW1 switch to 1-off

  12. Connect debug cable and open the terminal, turn on the power.

Linux BSP Compile Method​

Yocto 4.0 (LE 1.1)

Basic Function Test​

Test SOP