Linux/AM3358: Red and Blue inverted on HDMI

Samy Ab

Part Number: AM3358

Tool/software: Linux

Hi,

I was able to boot my custom board on TI SDK 05.02. On HDMI, red and blue colors are inverted. I followed instructions on this link but it did not make a difference.

Custom board is based on beaglebone and its wired for 16 bit HDMI display, which according to errata should give correct colors, but instead it's giving red and blue inverted.

Please help to fix this issue.

Thanks

over 5 years ago

0 Margarita Gashova over 5 years ago

TI__Guru* 80190 points

Hello,

Please recheck your settings files.
Please check blue-and-red-wiring and video-ports settings in your dts file.

BR,
Margarita

0 Samy Ab over 5 years ago in reply to Margarita Gashova

Prodigy 190 points

Where can I find the source code for dts for kernel 4.14.79?

0 Margarita Gashova over 5 years ago in reply to Samy Ab

TI__Guru* 80190 points

Hello,

This question is discussed here also:
e2e.ti.com/.../769990

BR
Margarita

0 Samy Ab over 5 years ago in reply to Margarita Gashova

Prodigy 190 points

This link doesn't explain where to get dts for kernel 4.14.79. Can you please share the link for dts and how to compile it.
Thank you

0 Margarita Gashova over 5 years ago in reply to Samy Ab

TI__Guru* 80190 points

Hello,

The dts files are under /psdk/board-support/linux-x.xx.xx+gitAUTOINC+xxx/arch/arm/boot/dts
Refer this guide
software-dl.ti.com/.../Foundational_Components_Kernel_Users_Guide.html
search for "Compiling the Device Tree Binaries"

BR
Margarita

0 Samy Ab over 5 years ago in reply to Margarita Gashova

Prodigy 190 points

I followed instructions in the provided link but I got this error:

root@work-1:~/ti-processor-sdk-linux-am335x-evm-05.02.00.10/board-support/linux-4.14.79+gitAUTOINC+bde58ab01e-gbde58ab01e/arch/arm/boot/dts# make ARCH=arm CROSS_COMPILE=arm-linux-gnueabihf- am335x-boneblack.dtb
make: *** No rule to make target 'am335x-boneblack.dtb'. Stop.

Please assist.

Thank you

0 Margarita Gashova over 5 years ago in reply to Samy Ab

TI__Guru* 80190 points

Hello,

You must run this command in main linux folder. In your case this is :
/ti-processor-sdk-linux-am335x-evm-05.02.00.10/board-support/linux-4.14.79+gitAUTOINC+bde58ab01e-gbde58ab01e

Hope this helps.

BR
Margarita

0 Samy Ab over 5 years ago in reply to Margarita Gashova

Prodigy 190 points

Hi Margarita,

I tried that but got this error:

root@work-1:~/ti-processor-sdk-linux-am335x-evm-05.02.00.10/board-support/linux-4.14.79+gitAUTOINC+bde58ab01e-gbde58ab01e# make ARCH=arm CROSS_COMPILE=arm-linux-gnueabihf- am335x-boneblack.dtb
./scripts/gcc-version.sh: line 26: arm-linux-gnueabihf-gcc: command not found
./scripts/gcc-version.sh: line 27: arm-linux-gnueabihf-gcc: command not found
make: arm-linux-gnueabihf-gcc: Command not found
make: arm-linux-gnueabihf-gcc: Command not found
scripts/kconfig/conf --silentoldconfig Kconfig
***
*** Configuration file ".config" not found!
***
*** Please run some configurator (e.g. "make oldconfig" or
*** "make menuconfig" or "make xconfig").
***
scripts/kconfig/Makefile:38: recipe for target 'silentoldconfig' failed
make[2]: *** [silentoldconfig] Error 1
Makefile:518: recipe for target 'silentoldconfig' failed
make[1]: *** [silentoldconfig] Error 2
make: arm-linux-gnueabihf-gcc: Command not found
make: *** No rule to make target 'include/config/auto.conf', needed by 'scripts'. Stop.

0 Samy Ab over 5 years ago in reply to Samy Ab

Prodigy 190 points

I got the dts to compile. I had to enter full path for CROSS_COMPILE=/home/work/ti-processor-sdk-linux-am335x-evm-05.02.00.10/linux-devkit/sysroot/x86_64-arago-linux/usr/bin/arm-linux-gnueabihf- and I also had to set defconfig "tisdk_am335x-evm_defconfig".

I changed dts to have blue-and-red-wiring=crossed and I also tried with blue-and-red-wiring=straight. Both gave the same results, where blue and red colors are inverted on HDMI.
Please suggest any solutions.

0 Manisha Agrawal over 5 years ago in reply to Samy Ab

TI__Mastermind 22386 points

Can you please share output for following applications?
#kmsprint

#kmstest -f RG16

#kmstest -f XR24

#kmstest -f BG16

#kmstest -f XB2

0 Margarita Gashova over 5 years ago in reply to Samy Ab

TI__Guru* 80190 points

Hello,

I’m assuming you were able to resolve your issue.
So I am closing this thread. If is not, you could open a new thread if this is locked.

BR
Margarita

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Linux/AM3358: Red and Blue inverted on HDMI