mb/google/geralt: Remove unnecessary delay for MIPI panel
According to eDP panel datasheet[1], the eDP panel needs 0 <= x <=200ms
delay after VDD powering on. The MIPI panel[2] does not need this delay.
Move this delay to eDP path.
[1] NE135FBM-N41 V8.0 Product Spec_P2 20191025.pdf
[2] B5 TV110C9M-LL0 Product Specification Rev.P0
BRANCH=none
BUG=none
TEST=check FW screen
TEST=check timestamp
Before:
60:device initialization 696,422 (1)
15:starting LZMA decompress (ignore for x86) 696,587 (165)
16:finished LZMA decompress (ignore for x86) 696,675 (88)
17:starting LZ4 decompress (ignore for x86) 1,340,226 (643,551)
After:
60:device initialization 724,259 (1)
15:starting LZMA decompress (ignore for x86) 724,425 (166)
16:finished LZMA decompress (ignore for x86) 724,512 (87)
17:starting LZ4 decompress (ignore for x86) 1,168,176 (443,664)
Change-Id: I92bca5ec8269f4bad4dfab4ee193cdb5665de233
Signed-off-by: Yidi Lin <yidilin@chromium.org>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/79109
Reviewed-by: Ruihai Zhou <zhouruihai@huaqin.corp-partner.google.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Yu-Ping Wu <yupingso@google.com>
Reviewed-by: Eric Lai <ericllai@google.com>
Reviewed-by: Paul Menzel <paulepanter@mailbox.org>
diff --git a/src/mainboard/google/geralt/display.c b/src/mainboard/google/geralt/display.c
index fa007a1..68a0a22 100644
--- a/src/mainboard/google/geralt/display.c
+++ b/src/mainboard/google/geralt/display.c
@@ -33,9 +33,9 @@
panel->power_on();
mtk_ddp_init();
- mdelay(200);
if (panel->disp_path == DISP_PATH_EDP) {
+ mdelay(200);
if (mtk_edp_init(&edid) < 0) {
printk(BIOS_ERR, "%s: Failed to initialize eDP\n", __func__);
return -1;