Can I change UART on Linux Kernel??

k.s shin

Expert 2115 points

Hello

I have 6636 custom board, I faced same problem then U-BOOT.

I can't find location to change UART number in linux kernel sorce.

Can I get a solution changing UART number in Linux kenel?? I use linux source for XTCIEVMK2x.

Thank you.

Regards.

over 10 years ago

0 Titusrathinaraj Stalin over 10 years ago

TI__Guru** 116100 points

Which serial port are you using in your custom board ?

If UART1 then use "console=ttyS1" in bootargs of u-boot.

Have you tried to use "console=ttyS1" ?

You can see the UART defintions in following file.

<linux keystone source >/arch/arm/boot/dts/keystone.dtsi

0 k.s shin over 10 years ago in reply to Titusrathinaraj Stalin

Expert 2115 points

Hi Titus S.
I think, My board use UART1.
I set "console=ttyS0", "console=ttyS1" and "console=ttyS2" bootargs in u-boot. the result is same everytime. I cannot see Kernel boot message.
Only displayed "Starting Kernel".
could I miss a different thing??

Thank you

Regards.

0 k.s shin over 10 years ago in reply to Titusrathinaraj Stalin

Expert 2115 points

Sorry I find the word "console" another line in bootargs.

Thank you.

0 Titusrathinaraj Stalin over 10 years ago in reply to k.s shin

TI__Guru** 116100 points

Glad to hear that you were abe to solve the problem.

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Can I change UART on Linux Kernel??