Hi Mr. Nelson,
I could compile the kernel and Boot Chipsee LCD with BBB with Yocto build,
Thank you, Very much for help,
*I am putting steps here so that if someone wants to achieve similar thing
can refer it.*
I downloaded the Yocto_daisy(1.6) toolchain and installed it in my PC. And
compiled the Linux external to Yocto build. Here are steps.
I followed below steps in my virtualbox installed ubuntu.
in Yocto_daisy build core-image-sato, using following command,
bitbake core-image-sato
Prepare micro SD card with rootfile system, SPL & U-Boot, uImage, dtb,
uEnv.txt.
Clone beaglebone black Linux using following command
git clone --depth=1 https://github.com/beagleboard/linux
Download yocto-1.6(daisy) toolchain from following link.
http://downloads.yoctoproject.org/releases/yocto/yocto-1.6/toolchain/
Based on your machine type download from either i686 or x86_64
I downloaded following toochain.
http://downloads.yoctoproject.org/releases/yocto/yocto-1.6/toolchain/i686/poky-eglibc-i686-core-image-sato-armv7a-vfp-neon-toolchain-1.6.sh
Install toolchain by running download toolchain script. By default it
installs into opt directory, I installed it in default path.
In terminal traverse to the above downloaded Linux directory. and set
toolchain environment by running following command,
source
/opt/poky/1.6/environment-setup-armv7a-vfp-neon-poky-linux-gnueabi
Now configure kernel using following command,
make bb.org_defconfig
and then build kernel using following command
make uImage LOADADDR=0x80008000 -j4
now we shall install the modules into local directory using following
commands,
mkdir bbb_modules
export INSTALL_MOD_PATH=/home/ankur/linux/bbb_modules/
make modules_install
when kernel is built copy uImage(from /arch/arm/boot) and
am335x-boneblack-bbb-exp-c.dtb(from /arch/arm/boot) to the BOOT partition
of the micro SD card.
For FYI my uEnv.txt looks like this
Disable: HDMI
bootargs=console=ttyO1,115200n8 root=/dev/mmcblk0p2 rootfstype=ext4 rw
rootwait;
bootcmd=mmc rescan ; mmc dev 0 ; fatload mmc 0 0x80007fc0 uImage ; fatload
mmc 0 0x80F80000 am335x-boneblack-bbb-exp-c.dtb ; echo Ankur... ${bootcmd};
bootm 0x80007fc0 - 0x80F80000;
uenvcmd=boot;
11 . Now copy modules from local directory to the micro SD card, using
following commands,
cp -a /home/ankur/linux/bbb_modules/lib /media/ankur/ROOT/
sync
12. Eject the card put it into Beaglbone Black and power on the BBB+LCD.
I am yet to get the Touch calibration working for LCD but once i find it i
will update the answer.
Another pending thing is build above kernel into Yocto build system. I will
update the answer once i am done with that.
Hope this helps someone with the same issue.
Thank you,
Regards,
Ankur
On Thursday, 11 June 2015 23:18:21 UTC+5:30, RobertCNelson wrote:
>
> On Thu, Jun 11, 2015 at 2:09 AM, Ankur Tank <[email protected]
> <javascript:>> wrote:
> > Hi Experts,
> >
> > I think, I am almost there in getting Chipsee LCD work with BBB and
> Yocto.
> >
> > Here are my simple question,
> >
> > In my understanding,
> > Linux kernel from below location and "am335x-bone-bbb-exp-c.dts" can
> get
> > Chipsee 7 inch LCD working.
> > https://github.com/beagleboard/linux
> >
> > Que1 : Am I right ?
>
> It works in either:
>
> https://github.com/beagleboard/linux/tree/3.14
>
> https://github.com/beagleboard/linux/tree/4.1
>
> using "bb.org_defconfig"
>
> >
> > I couldn't fetch and build above kernel in my yocto_daisy, (Yet to learn
> > Yocto fully).
> >
> > So I am thinking of using Yocto Linux kernel (3.14.39 )
> > https://git.yoctoproject.org/cgit/cgit.cgi/linux-yocto-3.14/refs/tags
> >
> > and using dtb and configuration (uEnv.txt) from below link.
> > https://github.com/beagleboard/bb.org-overlays
> >
> > Que2: Will this combination work ?
>
> Nope... bb.org-overlays is for 4.1.x based kernels..
>
> >
> > I have already tried many things so I am asking this to know if I am in
> > right direction or not.
>
> Regards,
>
> --
> Robert Nelson
> https://rcn-ee.com/
>
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