[coreboot-gerrit] Change in coreboot[master]: mb/google/kukui: Fix LCD sequence T3 fail issue

[Tao Xia (Code Review)]

Tao Xia has uploaded this change for review. ( https://review.coreboot.org/c/coreboot/+/47443 )

Change subject: mb/google/kukui: Fix LCD sequence T3 fail issue
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mb/google/kukui: Fix LCD sequence T3 fail issue

There is a delay between PPVARN_LCD_EN and PPVARN_LCD.
An extra 9ms delay should be added on LCM_RST_1V8 in order to meet the Spec.

BUG=b:172201138
BRANCH=kukui
TEST=The LCD sequence T3 is larger than 5ms when power on.

Signed-off-by: Tao Xia 
Change-Id: Iaf7ae494e30c4c207103d949287b335288688c54
---
M src/mainboard/google/kukui/mainboard.c
1 file changed, 1 insertion(+), 1 deletion(-)

git pull ssh://review.coreboot.org:29418/coreboot refs/changes/43/47443/1

diff --git a/src/mainboard/google/kukui/mainboard.c b/src/mainboard/google/kukui/mainboard.c
index 268b7ca..cbcb5da 100644
--- a/src/mainboard/google/kukui/mainboard.c
+++ b/src/mainboard/google/kukui/mainboard.c
@@ -91,7 +91,7 @@
    gpio_output(GPIO_PPVARN_LCD_EN, 1);
    gpio_output(GPIO_PP1800_LCM_EN, 1);
    gpio_output(GPIO_PP3300_LCM_EN, 1);
-	mdelay(6);
+	mdelay(15);
    gpio_output(GPIO_LCM_RST_1V8, 1);
    mdelay(6);
 }