Meliks uses panel-built-in touch screen, it needs to set panel power
and reset signal to high for touch screen to work.
On user mode, coreboot doesn't initialize graphics since there is no
screen display before OS. So we would add a WA to initialize required
signals on user mode. It takes under 30 ms delay on booting time.
Bugzzy has fixed the same issue, copied the WA code from bugzzy.
- 1106bcce0d: `bugzzy: Initialize display signals on user mode`
Reference: HX83121-A panel specification (Page 60 - 64):
https://drive.google.com/file/d/1Q0wjzHmSOa_r2FwiNe4PtKWmhhacBw4W/view?pli=1&resourcekey=0-pnGgp8yzf68UpyqNE1Caew
BUG=b:412584604, b:398703068
BRANCH=nissa
TEST=Verified touch screen worked with test coreboot without FW splash
screen. (crrev/c/6647126)
- A part of `cbmem -t` result before this change:
```
115:finished elog init 914,227 (2,679)
70:device setup done 915,121 (893)
...
1101:jumping to kernel 1,055,074 (9,849)
Total Time: 1,055,039
```
- A part of `cbmem -t` result after this change:
```
115:finished elog init 911,708 (2,674)
70:device setup done 936,680 (24,971)
...
1101:jumping to kernel 1,073,415 (9,360)
Total Time: 1,073,379
```
Change-Id: I92c7754cfbdf73e84a25b6d45b062ba9cafb04ab
Signed-off-by: Seunghwan Kim <sh_.kim@samsung.corp-partner.google.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/88107
Reviewed-by: Eric Lai <ericllai@google.com>
Reviewed-by: Subrata Banik <subratabanik@google.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Kapil Porwal <kapilporwal@google.com>
a60c5d205b