Hi Laurent-san,
Thanks for your comment,

On 2015年03月09日 16:06, Laurent Pinchart wrote:
> Hello Hiep-san,
>
> On Monday 09 March 2015 10:07:04 Cao Minh Hiep wrote:
>> Hi Laurent-san
>>
>> I am Hiep from Jinzai Solution.
>> I'm sorry to bother you again!
> No worries.
>
>> We are testing the linux ver v4.0-rc2 on Koelsch, We can not boot the
>> kernel v4.0-rc2 on Koelsch,
>> Then we found a patch has changed as below:
>> "1f75cda ARM: shmobile: koelsch: Rename SCIF[01] serial ports to ttySC[01]"
>>
>> Please see it when you have time!
> Could you please detail your boot failure ? You might need to change your
> /etc/inittab to adjust to the serial port new name, but apart from that there
> shouldn't be any issue. I can boot my Koelsch board on 4.0-v2.
Sure, I use the rootfs of Linaro-nano 2014.09 to test v4.0-rc2.
When booting kernel with default config, bootlogs showed until these 
messages appearing.
"init: auto-serial-console main process ended, respawning
init: auto-serial-console main process ended, respawning
init: auto-serial-console main process ended, respawning
init: tty1 main process (1449) killed by TERM signal
init: auto-serial-console respawning too fast, stopped"

Then, my Koelsch board stoped here.(my Lager board is the same)
(I attached the bootlogs_file)

So, When I tried to add "console=ttySC0," into bootargs (at .dts file), 
i can boot my Koelsch board without any problems.
And these are the same on Lager board.

Thank you!
Jinso/Hiep
=========
information:
Actually, on v4.0-rc2, we have two patches related each other as below:
79e69d1 ARM: shmobile: koelsch dts:Drop console= bootargs parameter BAD.
1f75cda ARM: shmobile: koelsch: Rename SCIF01 serial ports to ttySC01

And for Lager:
569dd56 ARM: shmobile: lager dts: Drop console= bootargs parameter
78c11ec ARM: shmobile: lager: Rename SCIFA[01] serial ports to ttySC[01]

There is only 79e69d1 patch on v3.19-rcX, I also had a problem with 
bootting Koelsch on v3.19-rcX
(using linaro-nano 2014.09). But it was good on Yocto and 
linaro-nano-2013.02