BSP

Component Status Remarks
Power_prep + boots via MFG and from eMMC
Boot_prep + boots via MFG and from eMMC
U-Boot + boots via MFG and from eMMC
Component Status Remarks
Boot + using U-Boot via TFTP or from eMMC
Ethernet +
eMMC + no DDR, cf. problems
ext. SD +
Display +
Touch +
USB +
Sound +/? HP OUT works, Mic IN works in general, noisy. SGTL5000 at I2C Bus sporadically hangs
EEProm + Reading and writing via sysfs works
CAN + CAN0 ↔ CAN1 Controller via Bus tested
DUART +
GPIO +/? GPIO Port 0 measured at PCA9954 Chip @0x20 - works. More tests required.
AUART0 + RS-422 tested
AUART1 +
AUART2 ./. not connected
AUART3 + RTS/CTS not tested
AUART4 + RTS/CTS not tested
Akku/Goldcap ?
Buzzer + Edge 0→1 at Pin 24 of GPIO Bank 0 creates short beep
Subject Description Status Remark
Rescue Mode Rescue Mode Installation sporadically hangs
Sound SGTL5000 at I2C Bus sporadically hangs
MDIO Timeout Re-initialization the FEC interface results in MDIO Timeout, interface permanently down afterwards Workaround
DDR eMMC doesn't work Workaround DDR disabled
Crash I2C sporadic crashes during kernel boot and I2C initialization OKAY currently not occuring any more
Kernel Oops at reboot and halt OKAY currently not occuring any more
USB upper USB-Port does not get power OKAY
Ethernet ethernet hangs to often after re-initialization OKAY workaround “Reset PHY” seems to work (SVN r50)
MMC Card Insertion Detection should be configurable seperately for each interfacce (eMMC vs. ext. SD) OKAY
Link status the link status of the PHYs is not recognized correctly (U-Boot + Kernel) OKAY hardware has been modified (Phy Addr 0 was connected to FEC1 and Phy Addr 1 to FEC0)
Boot eMMC does not work, ROM Booter not accessing the eMMC OKAY HW problem, pull-ups required at LCD_D00+03
OTP fuses OTP fuses cannot be blown, no tool available OKAY tool not necessarily required. Programm only available from Freescale under NDA, kernel provides OTP Treiber, may be worth trying
Subject Comment
Goldcap Goldcap for RTC
rechargeable battery battery operation, charging
PM analysis of power management, battery management
Kernel 3.0 clarification required on how comprehensive the iMX28 is supported in the current kernel
  • Last modified: 2022/08/04 15:02