topic Re: i.mx6dl hdmi error in i.MX Processors

i.mx6dl hdmi error

bharadwaaj — Wed, 25 Feb 2015 06:46:03 GMT

Hi just booted the iMX 6 Dl sabrae AI board with core-image-sato image built from yocto ... console works fine but unable to see anything on the HDMI screen got this error during boot. Getting this error on the boot log

mxc_hdmi 20e0000.hdmi_video: Read EDID again

mxc_hdmi 20e0000.hdmi_video: No modes read from edid

mxc_hdmi 20e0000.hdmi_video: create default modelist

have also attached the bootlog.

Thanks in advance.

Original Attachment has been moved to: boot.txt.zip

Re: i.mx6dl hdmi error

saurabh206 — Wed, 25 Feb 2015 06:56:26 GMT

Hi,

What is a bootargs used?

Can you add following to your bootargs ?

video=mxcfb0:dev=hdmi,1920x1080M@60,if=RGB24

Thanks

Saurabh

Re: i.mx6dl hdmi error

bharadwaaj — Wed, 25 Feb 2015 08:57:46 GMT

Hi I have added those please find my bootargs below...

baudrate=115200

boot_fdt=try

bootargs=video=mxcfb0:dev=hdmi,1920x1080M@60,if=RGB24

bootcmd=mmc dev ${mmcdev};if mmc rescan; then if run loadbootscript; then run bootscript; else if run loaduimage; then run mmcboot; else run netboot; fi; fi; else run netboot; fi

bootcmd_mfg=run mfgtool_args;bootm ${loadaddr} ${initrd_addr} ${fdt_addr};

bootdelay=1

bootscript=echo Running bootscript from mmc ...; source

console=ttymxc3

ethact=FEC

ethaddr=00:04:9f:03:51:53

ethprime=FEC

fdt_addr=0x18000000

fdt_file=imx6dl-sabreauto.dtb

fdt_high=0xffffffff

initrd_addr=0x12C00000

initrd_high=0xffffffff

ip_dyn=yes

loadaddr=0x12000000

loadbootscript=fatload mmc ${mmcdev}:${mmcpart} ${loadaddr} ${script};

loadfdt=fatload mmc ${mmcdev}:${mmcpart} ${fdt_addr} ${fdt_file}

loaduimage=fatload mmc ${mmcdev}:${mmcpart} ${loadaddr} ${uimage}

mfgtool_args=setenv bootargs console=ttymxc3,115200 rdinit=/linuxrc g_mass_storage.stall=0 g_mass_storage.removable=1 g_mass_storage.idVendor=0x066F g_mass_storage.idProduct=0x37FF g_mass_storage.iSerialNumber="" enable_wait_mode=off

mmcargs=setenv bootargs console=${console},${baudrate} ${smp} root=${mmcroot}

mmcboot=echo Booting from mmc ...; run mmcargs; if test ${boot_fdt} = yes || test ${boot_fdt} = try; then if run loadfdt; then bootm ${loadaddr} - ${fdt_addr}; else if test ${boot_fdt} = try; then bootm; else echo WARN: Cannot load the DT; fi; fi; else bootm; fi;

mmcdev=1

mmcpart=1

mmcroot=/dev/mmcblk0p2 rootwait rw

netargs=setenv bootargs console=${console},${baudrate} ${smp} root=/dev/nfs ip=dhcp nfsroot=${serverip}:${nfsroot},v3,tcp

netboot=echo Booting from net ...; run netargs; if test ${ip_dyn} = yes; then setenv get_cmd dhcp; else setenv get_cmd tftp; fi; ${get_cmd} ${uimage}; if test ${boot_fdt} = yes || test ${boot_fdt} = try; then if ${get_cmd} ${fdt_addr} ${fdt_file}; then bootm ${loadaddr} - ${fdt_addr}; else if test ${boot_fdt} = try; then bootm; else echo WARN: Cannot load the DT; fi; fi; else bootm; fi;

script=boot.scr

uimage=uImage

Environment size: 2056/8188 bytes

still my problem is not solved :smileysad:

Re: i.mx6dl hdmi error

saurabh206 — Wed, 25 Feb 2015 09:06:13 GMT

Are you using HDMI monitor or DVI monitor?

HDMI to DVI connection is not working with some of the case.

Try to connect only HDMI monitor and check

Re: i.mx6dl hdmi error

bharadwaaj — Wed, 25 Feb 2015 09:15:05 GMT

Hi am using HDMI monitor only(provided by freescale along with the AI board) ... just now realized that the error message

mxc_hdmi 20e0000.hdmi_video: Read EDID again

mxc_hdmi 20e0000.hdmi_video: No modes read from edid

mxc_hdmi 20e0000.hdmi_video: create default modelist

is getting displayed again and again when i switch the monitor on.... else no message is getting displayed....

I have checked the monitor with other laptops it works fine...

Re: i.mx6dl hdmi error

bharadwaaj — Wed, 25 Feb 2015 11:49:08 GMT

Hi Thank you for your suggestion I have changed my boot args look like the following

baudrate=115200

boot_fdt=try

bootcmd=mmc dev ${mmcdev};if mmc rescan; then if run loadbootscript; then run bootscript; else if run loaduimage; then run mmcboot; else run netboot; fi; fi; else run netboot; fi

bootcmd_mfg=run mfgtool_args;bootm ${loadaddr} ${initrd_addr} ${fdt_addr};

bootdelay=1

bootscript=echo Running bootscript from mmc ...; source

console=ttymxc3

displayinfo=video=mxcfb0:dev=hdmi,920x1080M@60,if=RGB24

ethact=FEC

ethaddr=00:04:9f:03:51:53

ethprime=FEC

fdt_addr=0x18000000

fdt_file=imx6dl-sabreauto.dtb

fdt_high=0xffffffff

initrd_addr=0x12C00000

initrd_high=0xffffffff

ip_dyn=yes

loadaddr=0x12000000

loadbootscript=fatload mmc ${mmcdev}:${mmcpart} ${loadaddr} ${script};

loadfdt=fatload mmc ${mmcdev}:${mmcpart} ${fdt_addr} ${fdt_file}

loaduimage=fatload mmc ${mmcdev}:${mmcpart} ${loadaddr} ${uimage}

mmcargs=setenv bootargs console=${console},${baudrate} ${smp} root=${mmcroot} ${displayinfo}

mmcdev=1

mmcpart=1

mmcroot=/dev/mmcblk0p2 rootwait rw

netargs=setenv bootargs console=${console},${baudrate} ${smp} root=/dev/nfs ip=dhcp nfsroot=${serverip}:${nfsroot},v3,tcp

script=boot.scr

uimage=uImage

now things work perfectly.... :smileyhappy: