PhyCORE-Vybrid Linux BSP-PD13.1.0 Release Notes

Introduction

This BSP provides a basis for development, deployment and execution of Linux based applications on the phyCORE-Vybrid System on Module (SOM). For detailed information on the various software components included in the release and how to use them, please refer to the Quickstart.

Versioning

This Release is compatible with the following hardware:

BSP Download

Release PD13.1.0 can be downloaded from the link below:

LinuxLink | PHYTEC FTP

Quickstart

Release PD13.1.0 should be used in conjunction with Quickstart version QS1.0:

• PhyCORE-Vybrid_Quickstart-QS1.0

What’s Supported

This BSP Release supports the following components:

• Linux Kernel: 3.0
• NAND Flash: U-Boot, Linux kernel ^[1]
• QSPI NOR Flash
• UART: RS-232 via SCI_1
• USB: USB_0 in Host Mode; USB_1 in Host Mode
• SD/MMC: MMC via MCU_PTA24-29 signals
• Ethernet: 10/100 Mbit/s - ETH1 on RMII0; ETH1 on RMII1

• RTC: Internal RTC
• SPI: QSPI_A; QSPI_B
• I2C driver: I2C_2 enabled
  • EEPROM: at24 on I2C_2
  • TSC: STMPE811 on I2C_2
• PMIC
• Audio: Freescale Codec SGTL5000 connected to I2S (I2C_2)
• Display: Prime View PM070WL4 LVDS (LCD-017-070W)
• LCD Backlight: PWM
• Watchdog
• MCC: Cortex-A5 (Linux) and Cortex-M4 (MQX)

What’s Not Supported

This BSP Release does not support the following components:

• CAN: CAN_0; CAN_1
• RTC: RV-4162-C7 on I2C_2
• Light Sensor
• High Speed Timer
• Power Management: Suspend to RAM

Fixed in this Release

• Cold boot system hang after DDR initialization in U-Boot

New in this Release

• NAND boot ^[1]
• QSPI NOR Flash
• ETH1 on RMII1
• SPI: QSPI_A; QSPI_B
• LCD Backlight PWM
• Watchdog

Known Issues

• NAND Boot: Requires additional hardware setup. This will be fixed in the next hardware revision.Workaround: A hardware pull-up must be added to the NFC_R/B signal, we recommend a 4.7kΩ resistor but any value will work.

• First boot requires display connection (Theatre Images):
  • Due to ts_calibrate being part of the initial board startup, the LCD-017-070 display must be connected to the Carrier Board during the first boot.
  • Workaround (if there is no display available): Use the host machine to remove the following startup scripts from the filesystem:
    • /etc/init.d/S70-calibrate-touchscreen
    • /etc/init.d/S70-detect-mouse
    • /etc/init.d/S98-timesys-theatre
    • /etc/init.d/K02-timesys-theatre
    • /etc/init.d/K30-calibrate-touchscreen
    • /etc/init.d/K30-detect-mouse

• Touch on the display may be unresponsive after closing the timesys-theatre-demo.
  • Workaround: Reboot the system.

• Audio may fail to work correctly after closing an audio file while it is playing.
  • Workaround: Reboot the system.

• SDHC speed class 10 SD cards fail to mount the root filesystem when booting Linux. Below is an example of the boot failure:

mmc0: Timeout waiting for hardware interrupt.
mmcblk0: error -110 sending stop command, original cmd response 0x900, card status 0x400900
mmcblk0: error -110 transferring data, sector 196610, nr 2, cmd response 0x900, card status 0x0
mmcblk0: retrying using single block read
mmcblk0: error -84 transferring data, sector 196610, nr 2, cmd response 0x900, card status 0x0
end_request: I/O error, dev mmcblk0, sector 196610
mmcblk0: error -84 transferring data, sector 196611, nr 1, cmd response 0x900, card status 0x0
end_request: I/O error, dev mmcblk0, sector 196611
EXT2-fs (mmcblk0p3): error: unable to read superblock
List of all partitions:
1f00         1048576 mtdblock0  (driver?)
1f01           16384 mtdblock1  (driver?)
1f02           16384 mtdblock2  (driver?)
b300         7782400 mmcblk0  driver: mmcblk
  b301           49152 mmcblk0p1 00000000-0000-0000-0000-000000000mmcblk0p1
  b302           46080 mmcblk0p2 00000000-0000-0000-0000-000000000mmcblk0p2
  b303         7684096 mmcblk0p3 00000000-0000-0000-0000-000000000mmcblk0p3
No filesystem could mount root, tried:  ext2
Kernel panic - not syncing: VFS: Unable to mount root fs on unknown-block(179,3)
[<80033be8>] (unwind_backtrace+0x0/0xf8) from [<80356470>] (panic+0x5c/0x170)
[<80356470>] (panic+0x5c/0x170) from [<80008cf0>] (mount_block_root+0x1e0/0x224)
[<80008cf0>] (mount_block_root+0x1e0/0x224) from [<80008edc>] (mount_root+0xbc/0xdc)
[<80008edc>] (mount_root+0xbc/0xdc) from [<80009054>] (prepare_namespace+0x158/0x1b0)
[<80009054>] (prepare_namespace+0x158/0x1b0) from [<80008950>] (kernel_init+0xe4/0x110)
[<80008950>] (kernel_init+0xe4/0x110) from [<8003029c>] (kernel_thread_exit+0x0/0x8)

Workaround: Use an SDHC speed class 4 SD card with this release

Upgrade and Compatibility Information

This software release is compatible with Vybrid processor silicon 1N02G.

To upgrade to a new BSP release, simply delete the old release and extract the new release in its place.

Dependencies

N/A

Validation Information

Drivers have been tested with in-house test cases.

Technical Support

For further support please visit PHYTEC's Support Portal