Dear Donghwa Lee,
In message 50D02454.2050609@samsung.com you wrote:
Where exactly will this driver be used inside U-Boot? So far, we don't have any GUI support, do what is a touch driver good for?
...
We are testing various codes on TRATS board. If this patch would be submitted, we can test the codes in a pleasant working environment. If this driver is not used for any other purposes in the u-boot, we would use it only inside the local tree.
As long as there is no code in mainline U-Boot that actually uses such a driver, it would only be dead code, that does not even get compile-tested. If you are going to add any such code, then please submit the driver again as part of the patch series that includes the "user".
Thanks.
Best regards,
Wolfgang Denk