[coreboot-gerrit] Change in ...coreboot[master]: google/kukui: turn off backlight before config display

[jitao shi (Code Review)]

jitao shi has uploaded this change for review. ( https://review.coreboot.org/c/coreboot/+/33571

Change subject: google/kukui: turn off backlight before config display
......................................................................

google/kukui: turn off backlight before config display

Turn off backlight before display config and then turn on backlight
after display config. Avoid flash white screen when configuring
display.

BUG=b:129299873
BRANCH=none

Change-Id: Icc16c4297eb3c6b6a4770a36661a2e3cab418048
Signed-off-by: Jitao Shi 
---
M src/mainboard/google/kukui/panel_kukui.c
1 file changed, 3 insertions(+), 2 deletions(-)

git pull ssh://review.coreboot.org:29418/coreboot refs/changes/71/33571/1

diff --git a/src/mainboard/google/kukui/panel_kukui.c b/src/mainboard/google/kukui/panel_kukui.c
index be76aa4..887634f 100644
--- a/src/mainboard/google/kukui/panel_kukui.c
+++ b/src/mainboard/google/kukui/panel_kukui.c
@@ -145,10 +145,11 @@
    return false;
 };

+/* Setup backlight control pins as output pin and power-off by default */
 static int kukui_backlight(struct board_display_intf *intf)
 {
-	gpio_output(GPIO(PERIPHERAL_EN13), 1);
-	gpio_output(GPIO(DISP_PWM), 1);	/* DISP_PWM0 */
+	gpio_output(GPIO(PERIPHERAL_EN13), 0);
+	gpio_output(GPIO(DISP_PWM), 0);

return 0;
 };