From 20a332a30e01117cdb093119cd308d4538ea3fc2 Mon Sep 17 00:00:00 2001 From: Cong Yang Date: Thu, 28 Sep 2023 11:40:50 +0800 Subject: [PATCH] mb/google/starmie: Add 3 ms delay to AW37503 Power IC panel timing Based on the power sequence of the panel [1], the power on T3 sequence VSN to RESET should be larger than 1ms. Because the Power IC descending slope takes 2ms, actual measurement needs 3ms to meet the timing of panel sequence. [1] HX83102-J02_Datasheet_v03.pdf BUG=b:302212730 BRANCH=corsola TEST=emerge-staryu coreboot chromeos-bootimage and boot the panel Change-Id: I488c746d1fcfc165125b0ecccb0bccbb99231b00 Signed-off-by: Cong Yang Reviewed-on: https://review.coreboot.org/c/coreboot/+/78185 Reviewed-by: Ruihai Zhou Reviewed-by: Paul Menzel Tested-by: build bot (Jenkins) Reviewed-by: Yu-Ping Wu Reviewed-by: Yidi Lin --- src/mainboard/google/corsola/panel_starmie.c | 1 + 1 file changed, 1 insertion(+) diff --git a/src/mainboard/google/corsola/panel_starmie.c b/src/mainboard/google/corsola/panel_starmie.c index c55d82d4c7..55e9dbf1b6 100644 --- a/src/mainboard/google/corsola/panel_starmie.c +++ b/src/mainboard/google/corsola/panel_starmie.c @@ -34,6 +34,7 @@ static void mipi_panel_power_on(void) gpio_output(GPIO_EN_PP3300_DISP_X, 1); mdelay(2); gpio_output(GPIO_EN_PP3300_SDBRDG_X, 1); + mdelay(3); } else if (tps65132s_setup(&cfg) != CB_SUCCESS) { printk(BIOS_ERR, "Failed to setup tps65132s\n"); }