[yocto] Id "s0" respawning too fast on Raspberry pi3

[ChenQi]

On 08/22/2018 04:24 PM, benxi wrote:
> Hi Qi,
> Thanks for your reply. It indeed solves the problem, however I'm 
> afraid that modifying SERIAL_CONSOLES can have side effects on other 
> recipes. I also wonder if there 're any way to enable ttyS0 on my 
> raspberry pi(Since ENABLE_UART doesn't work).
>

The SERIAL_CONSOLES setting is _expected_ affect all recipes. That's why 
it's usually set in some .conf file.
Serial consoles will have different names and are device related. That's 
why we have the variable SERIAL_CONSOLES.

I think you should just change SERIAL_CONSOLES to match the raspberry pi.

Best Regards,
Chen Qi

> 在 2018-08-22 15:59:44，"ChenQi" <Qi.Chen at windriver.com> 写道：
>
>     On 08/22/2018 12:24 PM, benxi wrote:
>>     Hello Everyone,
>>         I build a rpi-hwup-image and run it on my raspberry pi3(Model
>>     B V1.2). After the system boots up, I keep seeing such message:
>>         INIT: Id "S0" respawning too fast: disabled for 5 minutes.
>>         I notice that yocto adds the following line to /etc/inittab
>>     when install sysvinit, since Serial_Console was set in
>>     raspberrypi3-64.conf:
>>     S0:12345:respawn:/bin/start_getty 115200 ttyS0 vt102
>>        I try to add ENABLE_UART = "1" in local.conf but the message
>>     keeps coming. The message can be eliminated by commenting out the
>>     corresponding line in /etc/inittab.
>>        So, is this a bug of meta-raspberrypi? Is there anyway to fix
>>     it without modifying sysvinit's recipes and /etc/inittab?
>>
>>
>
>     Could you please check the SERIAL_CONSOLES variable to see if
>     modifying its value could solve the problem?
>
>     Best Regards,
>     Chen Qi
>
>>
>>
>
>
>

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