P4040_CONSOLE_ttyS2

[731020999]

Hi,support

Could you tell me how to setup console to ttyS2(UART2)? ttyS0(UART0) works fine.

We have tried to modify u-boot environment variable bootargs to "root=/dev/ram console=ttyS2,115200", but it dose not work.

The filesystem we used is extracted from QorIQ-SDK-V1.8 flash image, CPU is P4040.

We have checked ttyS2(UART2), rx and tx works fine.

We wonder if any configuration file of the filesystem need to be customized.

Any suggestions would be greatly appreciated!

Have a great day!

Xiao Jun

[731020999]

Any help？

Hello？

[yipingwang]

Please edit u-boot configuration file include/configs/corenet_ds.h, please find the section "Serial Port", and change the variable "CONFIG_CONS_INDEX" to "2" instead of "1", then rebuild u-boot.

In addition, in Kernel bootargs, please change bootargs as "root=/dev/ram rw console=ttyS1,115200" rather than "console=ttyS0".

Have a great day,
TIC

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[731020999]

I have already tested ttyS1 by changing bootargs as "console=ttyS1,115200", it works fine!

However, when I change bootargs as "console=ttyS2,115200", nothing happens.

We wonder if any configuration file of the filesystem need to be customized.