earlycon serial support for imx8mq

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earlycon serial support for imx8mq

686 次查看
amitt
Contributor I

Hello

Wondering if earlycon support has well tested on imx8mq based SoC ?

We are working on, boundry device provided Nitrogen8m board based on imx8mq SoC.

Nitrogen8M - An NXP i.MX8 M Single Board Computer Platform .

While testing earlycon serial support we just see garbage on our console, This is how our chosen node looks like:

      chosen {
                    bootargs = "console=ttymxc0,115200 earlycon=ec_imx6q,0x30860000,115200";
                    stdout-path = &uart1;
        };

We don't have anything set in bootargs from u-boot and following is how we load our kernel

setenv ipaddr 10.105.2.28;setenv serverip 10.105.2.27;tftp 0x40480000 Image;tftp 0x43000000 imx8mq-nitrogen8m.dtb
booti 0x40480000 - 0x43000000

Starting kernel ...

� ����� ������� � ���� � ��� �� ��� � ����� � � � �� �� ���� ����� ������� �� ��� � �� � � � ������ � �������� � ���� �� �� � �� �� �� � � � � � � � ���� � ��������� �� �

All, we see is random chars on console.

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424 次查看
b36401
NXP TechSupport
NXP TechSupport

There should be nothing special to earlycon.
Please make sure that you are set the same serial port options in bootargs and terminal running on the PC.

Have a great day,
Victor

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