i.MX6 Solo X SABRE for smart devices with HDMI card

[markoroganovic]

Hallo.

I am using i.MX6 Solo X SABRE board for Smart Devices and I am trying to display to HDMI monitor over HDMI card (MCIMXHDMICARD) instead of LVDS as in Quick Start Guide, but without succsess. I tried modifing mmcargs variable in U-boot, but with no luck. Can someone help me and say what modification should be done in U-boot in order to display things over LCD extention port and HDMI card.

The default printenv in U-boot is:

printenv

baudrate=115200

boot_fdt=try

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

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

bootdelay=3

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

console=ttymxc0

ethact=FEC0

ethaddr=00:04:9f:03:85:a6

ethprime=FEC

fdt_addr=0x83000000

fdt_file=imx6sx-sdb.dtb

fdt_high=0xffffffff

image=zImage

initrd_addr=0x83800000

initrd_high=0xffffffff

ip_dyn=yes

loadaddr=0x80800000

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

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

loadimage=fatload mmc ${mmcdev}:${mmcpart} ${loadaddr} ${image}

loadm4image=fatload mmc ${mmcdev}:${mmcpart} ${loadaddr} ${m4image}

m4boot=sf probe 1:0; bootaux 0x78000000

m4image=m4_qspi.bin

mfgtool_args=setenv bootargs console=${console},${baudrate} 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=""

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

mmcautodetect=yes

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

mmcdev=2

mmcpart=1

mmcroot=/dev/mmcblk3p2 rootwait rw

netargs=setenv bootargs console=${console},${baudrate} 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} ${image}; if test ${boot_fdt} = yes || test ${boot_fdt} = try; then if ${get_cmd} ${fdt_addr} ${fdt_file}; then bootz ${loadaddr} - ${fdt_addr}; else if test ${boot_fdt} = try; then bootz; else echo WARN: Cannot load the DT; fi; fi; else bootz; fi;

panel=Hannstar-XGA

script=boot.scr

update_m4_from_sd=if sf probe 1:0; then if run loadm4image; then setexpr fw_sz ${filesize} + 0xffff; setexpr fw_sz ${fw_sz} / 0x10000; setexpr fw_sz ${fw_sz} * 0x10000; sf erase 0x0 ${fw_sz}; sf write ${loadaddr} 0x0 ${filesize}; fi; fi

Environment size: 2377/8188 bytes

Begin of boot information:

mmc2 is current device

reading boot.scr

** Unable to read file boot.scr **

reading zImage

5545424 bytes read in 257 ms (20.6 MiB/s)

Booting from mmc ...

reading imx6sx-sdb.dtb

48951 bytes read in 19 ms (2.5 MiB/s)

Kernel image @ 0x80800000 [ 0x000000 - 0x549dd0 ]

## Flattened Device Tree blob at 83000000

   Booting using the fdt blob at 0x83000000

   Using Device Tree in place at 83000000, end 8300ef36

switch to ldo_bypass mode!

Starting kernel ...

Booting Linux on physical CPU 0x0

Linux version 3.10.53-1.1.0_ga+g496fbe0 (jenkins@scmbl1) (gcc version 4.8.2 (GCC) ) #1 SMP PREEMPT Mon Jan 5 15:55:14 CST 2015

CPU: ARMv7 Processor [412fc09a] revision 10 (ARMv7), cr=10c53c7d

CPU: PIPT / VIPT nonaliasing data cache, VIPT aliasing instruction cache

Machine: Freescale i.MX6 SoloX (Device Tree), model: Freescale i.MX6 SoloX SDB Board

cma: CMA: reserved 320 MiB at ac000000

Memory policy: ECC disabled, Data cache writealloc

PERCPU: Embedded 8 pages/cpu @81598000 s8960 r8192 d15616 u32768

Built 1 zonelists in Zone order, mobility grouping on.  Total pages: 260096

Kernel command line: console=ttymxc0,115200 root=/dev/mmcblk3p2 rootwait rw

PID hash table entries: 4096 (order: 2, 16384 bytes)

Dentry cache hash table entries: 131072 (order: 7, 524288 bytes)

Inode-cache hash table entries: 65536 (order: 6, 262144 bytes)

Memory: 1024MB = 1024MB total

Memory: 697256k/697256k available, 351320k reserved, 0K highmem

I appretiate any help.

[CarlosCasillas]

Hi Marko,

I have consulted with AE team the option of using the MCIMXHDMICARD with the MCIMX6SX-SDB board, as it was originally designed for the i.MX53QSB.

I will post an update as soon as having news.

Best regards!

/Carlos

[CarlosCasillas]

Hi Marko,

It is supposed that Linux 3.14.28 should have external HDMI (sii902x) support. It is required to ensure that the correct dtb file is being used. imx6sx-sdb-lcdif1.dtb is for HDMI.

Hope this will be useful for you.
Best regards!
/Carlos

[CarlosCasillas]

Hi Marko,

As commented before, imx6sx-sdb-lcdif1.dtb should be used. Considering a just flashed bootable SD for the MCIMX6SX-SDB board, try adding the following on u-boot command line:

    setenv panel 'MCIMX28LCD'

    setenv fdt_file 'imx6sx-sdb-lcdif1.dtb'

    saveenv

    boot

Reference:MCIMX28LCD on i.MX 6SoloX SABRE board

Hope this will be useful for you.
Best regards!
/Carlos

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[markoroganovic]

Hi Carlos,

I have tried to do the environment variable changes as suggested, (see the printenv below), but it resulted in kernel panic:

=> printenv

baudrate=115200

boot_fdt=try

bootcmd=run m4boot; mmc dev ${mmcdev};if mmc rescan;then if run loadbootscript;then run bootscript;else if run loadimage;then run mmcboot;else run netboot;fi;fi; else run netboot;fi;

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

bootdelay=3

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

console=ttymxc0

ethact=FEC0

ethaddr=00:04:9f:03:85:a6

ethprime=FEC

fdt_addr=0x83000000

fdt_file=imx6sx-sdb-lcdif1.dtb

fdt_high=0xffffffff

image=zImage

initrd_addr=0x83800000

initrd_high=0xffffffff

ip_dyn=yes

loadaddr=0x80800000

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

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

loadimage=fatload mmc ${mmcdev}:${mmcpart} ${loadaddr} ${image}

loadm4image=fatload mmc ${mmcdev}:${mmcpart} ${loadaddr} ${m4image}

m4boot=sf probe 1:0; bootaux 0x78000000

m4image=m4_qspi.bin

mfgtool_args=setenv bootargs console=${console},${baudrate} 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=""

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

mmcautodetect=yes

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

mmcdev=2

mmcpart=1

mmcroot=/dev/mmcblk3p2 rootwait rw

netargs=setenv bootargs console=${console},${baudrate} 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} ${image}; if test ${boot_fdt} = yes || test ${boot_fdt} = try; then if ${get_cmd} ${fdt_addr} ${fdt_file}; then bootz ${loadaddr} - ${fdt_addr}; else if test ${boot_fdt} = try; then bootz; else echo WARN: Cannot load the DT; fi; fi; else bootz; fi;

panel=MCIMX28LCD

script=boot.scr

update_m4_from_sd=if sf probe 1:0; then if run loadm4image; then setexpr fw_sz ${filesize} + 0xffff; setexpr fw_sz ${fw_sz} / 0x10000; setexpr fw_sz ${fw_sz} * 0x10000; sf erase 0x0 ${fw_sz}; sf write ${loadaddr} 0x0 ${filesize}; fi; fi

Environment size: 2387/8188 bytes

Kernel panic at the end:

r7 : 80dc9a5c  r6 : 00000014  r5 : 80dc9a5c  r4 : 00000001

r3 : 00000000  r2 : a800f200  r1 : 00000001  r0 : 00000000

Flags: NzCv  IRQs on  FIQs on  Mode SVC_32  ISA ARM  Segment kernel

Control: 10c53c7d  Table: 8000404a  DAC: 00000015

Process swapper/0 (pid: 1, stack limit = 0xa8072238)

Stack: (0xa8073ee8 to 0xa8074000)

3ee0:                   a8072000 80d2c1d4 80d56fb8 80dc8ac0 80dc8ac0 8000889c

3f00: a800e900 80c171ec a80a2f00 806dfe84 00000000 00000000 00008ac0 80129438

3f20: 00000000 80d788f0 60000113 00000001 00000008 00000000 abfffa34 80045808

3f40: 80c0c4a4 00000007 00000007 abfffa36 80d788e0 80d62c88 00000007 80d56fb8

3f60: 80dc8ac0 80dc8ac0 0000010a 80d56fbc 00000000 80d13c54 00000007 00000007

3f80: 80d13514 8004e520 00000000 806d34d0 00000000 00000000 00000000 00000000

3fa0: 00000000 806d34d8 00000000 8000e538 00000000 00000000 00000000 00000000

3fc0: 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000

3fe0: 00000000 00000000 00000000 00000000 00000013 00000000 75be27af edf71d27

[<80d2c260>] (imx_amp_power_init) from [<8000889c>] (do_one_initcall+0xf8/0x154)

[<8000889c>] (do_one_initcall) from [<80d13c54>] (kernel_init_freeable+0x138/0x1d8)

[<80d13c54>] (kernel_init_freeable) from [<806d34d8>] (kernel_init+0x8/0xe8)

[<806d34d8>] (kernel_init) from [<8000e538>] (ret_from_fork+0x14/0x3c)

Code: e0233496 e0872102 e0844001 e5922004 (e5c31018)

---[ end trace 88d1c1c35acf052f ]---

Kernel panic - not syncing: Attempted to kill init! exitcode=0x0000000b

Should I add video variable to mmcargs? This is what is written in boot log regarding display:

MIPI DSI driver module loaded

mxsfb 2220000.lcdif: failed to find mxc display driver

DISPLAY: Power-on latency exceeded, new value 31000 ns

DISPLAY: Power-off latency exceeded, new value 24334 ns

Console: switching to colour frame buffer device 100x30

DISPLAY: Power-off latency exceeded, new value 25000 ns

mxsfb 2220000.lcdif: initialized

1. 2224000.lcdif supply lcd not found, using dummy regulator

mxsfb 2224000.lcdif: registered mxc display driver ldb

mxsfb 2224000.lcdif: initialized

Thanks and Best Regards,

Marko Roganovic

[CarlosCasillas]

Hi Marko,

You should try with a recently flashed SD card using Linux 3.14.28 (L3.14.28_1.0.0_iMX6SX_BUNDLE on the i.MX6SX downloads). In my case, I have used “fsl-image-gui-x11-imx6sxsabresd.sdcard”, and I didn’t get kernel panic issues.

Hope this will be useful for you.
Best regards!
/Carlos

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[markoroganovic]

Hi Carlos,

We added video variable in mmcargs: video=mxc_lcdif:SEIKO-WVGA,bpp=16 (beside fdt_file and panel changes as suggested), and now it is functioning.

Thanks!

Best Regards!

Marko

[CarlosCasillas]

Hi Marko,

Yes, that was also mentioned on the referenced document MCIMX28LCD on i.MX 6SoloX SABRE board.

I'm glad to hear that it is working now!

Best regards!
/Carlos

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Note: If a post answers your question, please click the Correct Answer button. Thank you!
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