topic P4040_CONSOLE_ttyS2 in P-Series

P4040_CONSOLE_ttyS2

731020999 — Thu, 20 Jul 2017 16:07:12 GMT

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

Re: P4040_CONSOLE_ttyS2

731020999 — Mon, 24 Jul 2017 15:20:27 GMT

Any help？

Hello？

Re: P4040_CONSOLE_ttyS2

yipingwang — Tue, 25 Jul 2017 06:22:06 GMT

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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Re: P4040_CONSOLE_ttyS2

731020999 — Wed, 26 Jul 2017 12:42:55 GMT

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.