QiyangSupport › FAQ

FAQ

Linux FAQ


1. Each link's specific address in [EZ335X-EVB bootloader]
    SPI:                    0x0                                                      128K
    SPLbackup1:     MTDPART_OFS_APPEND 0X20000    128k
    SPLbackup2:     MTDPART_OFS_APPEND 0X40000    128k
    SPLbackup3:     MTDPART_OFS_APPEND 0X60000    128k
    U-boot:              MTDPART_OFS_APPEND 0X80000    15*128k
    U-boot Env:       MTDPART_OFS_APPEND 0X260000   128K
    kernel:               MTDPART_OFS_APPEND 0X280000   40*128K
    File System:      MTDPART_OFS_APPEND 0X780000    MTDPART_SIZ_FULL


2. Q: How to close [dhcp] for EZ335X-EVB ?
  A:[vi /etc/network/interfaces],edit, shield [iface eth0 inet dhcp].

3.Q: Does AM335X network card could switch between [switch]mode and Double [MAC] mode ?
    A:Please refer to [http://processors.wiki.ti.com/index.php/AM335x_CPSW_(Ethernet)_Driver's_Guide]


4. EZ335X set MAC address, unable to set, it needs read from the hardware automatically, [mac] on carrier board is the next for the [mac] on core board.

5. Q:Why the files in [/dev] could not be extracted from file system source file ?
A: A:It because that it do not use [sudo], the universal user could not generate node file.In the doucumenatation, it mentions that use user [root] to work. I do not use user [root], so I have this problem.


6. Q: About [Unable making SD card for booting ] ?
     A: A:my system is Chinese,so the inputing command by [fdisk] command is Chinese too. But,the [grep]command could be check from [fdisk]command by look up the word [disk]. It could not be found, so we could not do formatting partition for SD card.


7. Q:Where is EZ335X button 's driver ?
     A:drivers/input/keyboard/gpio_key.c


8. Q:Where is 9G45 uboot's parameters ?
     A:It is in source code's path [includeconfigsat91sam9m10g45ek.h]


9. Q: Where is serial driver 's path in 335x kernel source ?
    A: Serial driver's path:linux-3.2.0-04.06.00.08/drivers/tty/serial/omap-serial.c


10. Q: Why 335x buzzer is always buzzering ?
    A: Modify files:
1、arch/arm/include/asm/arch-ti81xx/cpu.h
2、board/ti/am335x/pll.c
3、board/ti/am335x/common_def.h
4、arch/arm/cpu/armv7/omap-common/spl.c