Hello Cheng,

It seems from 37000 feet (commercial plane altitude) view that you do not have the following:

[1] Appropriate Linux drivers for your W83627dhg superIO enabled in .config (make menuconfig options);

[2] These drivers (maybe) are missing from your Linux distro;

[3] If drivers are there, something fishy with these drivers, something with them is not right/correct.

I have couple of questions here:

[1] Which Linux distro are you using?

[2] Could you attach your kernel .config file?

[3] Could you attach your dmesg traces/records?

Thank you,

Zoran

On Fri, Jul 22, 2016 at 12:14 PM, cheng yichen <blessyichen@gmail.com> wrote:

Hi all

My platform is braswell SOC with W83627dhg superIO. In post stage I can get debug message over w83627 uart1(3f8/irq4). but after boot to linux, uart port is not woarkable. I test the function by minicom but I can't receive and send data. I can get uart information by dmesg command.
How to initial it in corebooot?
Thank you

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