BBB hang while powerup when using with “GEN4-4DCAPE-70CT” cape

saurabh...@gmail.com

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Oct 25, 2018, 11:19:06 AM10/25/18

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Dear Developers,

I have bought Beaglebone black rev C (PCB rev B6) and flashed “bone-debian-9.3-lxqt-armhf-2018-01-28-4gb.img” in emmc1 on BBB and emmc0 SD card.

After I have connected “GEN4-4DCAPE-70CT” LCD with BeagleBone Black and did power cycle (using powerdown button on BBB or using shutdown -h now command ) sometime (once per 10 time) I get garbage value from debug port of BBB just before starting of Kernel and complete system hang up.

Following is debug output I get when I face this problem:




 

U-Boot SPL 2018.01-00002-g9aa111a004 (Jan 20 2018 - 12:45:29) 

Trying to boot from MMC2 

  

  

U-Boot 2018.01-00002-g9aa111a004 (Jan 20 2018 - 12:45:29 -0600), Build: jenkins-github_Bootloader-Builder-32 

  

CPU  : AM335X-GP rev 2.1 

I2C:   ready 

DRAM:  512 MiB 

No match for driver 'omap_hsmmc' 

No match for driver 'omap_hsmmc' 

Some drivers were not found 

Reset Source: Power-on reset has occurred. 

MMC:   OMAP SD/MMC: 0, OMAP SD/MMC: 1 

Using default environment 

  

Board: BeagleBone Black 

<ethaddr> not set. Validating first E-fuse MAC 

BeagleBone Black: 

Model: Element14 BeagleBone Black Industrial: 

debug: process_cape_part_number:[BB-BONE-4D7C-01] 

debug: process_cape_part_number:[42422D424F4E452D344437432D3031] 

BeagleBone: cape eeprom: i2c_probe: 0x54: /lib/firmware/BB-BONE-4D7C-01-00A1.dtbo [0xfe133cf] 

BeagleBone: cape eeprom: i2c_probe: 0x55: 

BeagleBone: cape eeprom: i2c_probe: 0x56: 

BeagleBone: cape eeprom: i2c_probe: 0x57: 

Net:   eth0: MII MODE 

cpsw, usb_ether 

Press SPACE to abort autoboot in 2 seconds 

board_name=[A335BNLT] ... 

board_rev=[EIA0] ... 

switch to partitions #0, OK 

mmc0 is current device 

SD/MMC found on device 0 

** Bad device 0:2 0x82000000 ** 

** Bad device 0:2 0x82000000 ** 

switch to partitions #0, OK 

mmc0 is current device 

Scanning mmc 0:1... 

gpio: pin 56 (gpio 56) value is 0 

gpio: pin 55 (gpio 55) value is 0 

gpio: pin 54 (gpio 54) value is 0 

gpio: pin 53 (gpio 53) value is 1 

switch to partitions #0, OK 

mmc0 is current device 

gpio: pin 54 (gpio 54) value is 1 

Checking for: /uEnv.txt ... 

Checking for: /boot.scr ... 

Checking for: /boot/boot.scr ... 

Checking for: /boot/uEnv.txt ... 

gpio: pin 55 (gpio 55) value is 1 

2061 bytes read in 46 ms (43 KiB/s) 

Loaded environment from /boot/uEnv.txt 

Checking if uname_r is set in /boot/uEnv.txt... 

gpio: pin 56 (gpio 56) value is 1 

Running uname_boot ... 

loading /boot/vmlinuz-4.9.78-ti-r94 ... 

9960536 bytes read in 665 ms (14.3 MiB/s) 

uboot_overlays: [uboot_base_dtb=am335x-boneblack-uboot.dtb] ... 

uboot_overlays: Switching too: dtb=am335x-boneblack-uboot.dtb ... 

loading /boot/dtbs/4.9.78-ti-r94/am335x-boneblack-uboot.dtb ... 

61626 bytes read in 62 ms (969.7 KiB/s) 

uboot_overlays: [fdt_buffer=0x60000] ... 

uboot_overlays: loading /lib/firmware/BB-BONE-4D7C-01-00A1.dtbo ... 

4578 bytes read in 92 ms (47.9 KiB/s) 

uboot_overlays: loading /lib/firmware/BB-BONE-eMMC1-01-00A0.dtbo ... 

1105 bytes read in 255 ms (3.9 KiB/s) 

uboot_overlays: loading /lib/firmware/BB-ADC-00A0.dtbo ... 

695 bytes read in 550 ms (1000 Bytes/s) 

uboot_overlays: [uboot_detected_capes=BB-BONE-4D7C-01,] ... 

uboot_overlays: cape universal disabled, external cape enabled or detected... 

loading /boot/initrd.img-4.9.78-ti-r94 ... 

6300596 bytes read in 429 ms (14 MiB/s) 

debug: [console=ttyO0,115200n8 bone_capemgr.uboot_capemgr_enabled=1 root=/dev/mmcblk0p1 ro rootfstype=ext4 rootwait uboot_detected_capes=BB-BONE-4D7C-. 

debug: [bootz 0x82000000 0x88080000:6023b4 88000000] ... 

## Flattened Device Tree blob at 88000000 

   Booting using the fdt blob at 0x88000000 

   Loading Ramdisk to 8f9fd000, end 8ffff3b4 ... OK 

   reserving fdt memory region: addr=88000000 size=70000 

   Loading Device Tree to 8f98a000, end 8f9fcfff ... OK 

  

// Note problem occur before starting kernel 

  

i~�}�^�u~�u.�Mi^�u�( i��e~'ih�yxu~�u.���������������������

Please inform me what can be possible reason for this issue and how can I solve it or if you need any other information from me..Thank you very much :)

Robert Nelson

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Oct 25, 2018, 12:02:48 PM10/25/18

to Beagle Board, saurabh...@gmail.com

On Thu, Oct 25, 2018, 10:19 AM <saurabh...@gmail.com> wrote:

Dear Developers,

I have bought Beaglebone black rev C (PCB rev B6) and flashed “bone-debian-9.3-lxqt-armhf-2018-01-28-4gb.img” in emmc1 on BBB and emmc0 SD card.

After I have connected “GEN4-4DCAPE-70CT” LCD with BeagleBone Black and did power cycle (using powerdown button on BBB or using shutdown -h now command ) sometime (once per 10 time) I get garbage value from debug port of BBB just before starting of Kernel and complete system hang up.

Please reflash with latest image..

http://beagleboard.org/latest-images

Regards,

Saurabh Jain

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Oct 26, 2018, 5:19:15 AM10/26/18

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Hello Mr Nelson,

Using image bone-debian-9.5-lxqt-armhf-2018-10-07-4gb.img has solved this problem. Thank you very much for your help. Can you please also inform me, why exactly sometime I was getting problem with "bone-debian-9.3-lxqt-armhf-2018-01-28-4gb.img".

Kind regards

Saurabh Jain

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Oct 30, 2018, 6:23:01 AM10/30/18

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Dear Mr Nelson,

Today I have faced same problem that when I boot BBB using SD card, I get garbage value on serial port and operating system in BBB hangs. Presently I am using bone-debian-9.5-lxqt-armhf-2018-10-07-4gb.img (latest) to work with BBB.

Kindly inform me how can I find out main cause of problem and how can I fix it.

Thanks and Regards

Saurabh Jain

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