From 46df9e1d38f638f66be092fc8ec64a118581b0b5 Mon Sep 17 00:00:00 2001
From: Subrata Banik <subratabanik@google.com>
Date: Fri, 13 Dec 2024 01:40:44 +0530
Subject: [PATCH] mb/google/brya/var/marasov: Enable GPP_F9 GPIO for early
 panel power-on

This change enables the GPP_F9 GPIO, which controls the SLP_S0_GATE_R
signal and subsequently the SYS_SLP_S0IX_L signal.

By enabling GPP_F9 early in the boot process, we ensure the panel is
powered on correctly and able to render the eSOL message.

BUG=b:372737590
TEST=Verified panel power-on by observing eSOL during build on
google/marasov.

Change-Id: I727a72d9583575b2bbebe2c3b75c980170dd36b9
Signed-off-by: Subrata Banik <subratabanik@google.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/85574
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Dinesh Gehlot <digehlot@google.com>
Reviewed-by: Eric Lai <ericllai@google.com>
Reviewed-by: Kapil Porwal <kapilporwal@google.com>
Reviewed-by: Nick Vaccaro <nvaccaro@google.com>
---
 src/mainboard/google/brya/variants/marasov/gpio.c | 12 ++++++++++++
 1 file changed, 12 insertions(+)

diff --git a/src/mainboard/google/brya/variants/marasov/gpio.c b/src/mainboard/google/brya/variants/marasov/gpio.c
index 15760fdc2a..3c6f638899 100644
--- a/src/mainboard/google/brya/variants/marasov/gpio.c
+++ b/src/mainboard/google/brya/variants/marasov/gpio.c
@@ -2,6 +2,7 @@
 
 #include <baseboard/variants.h>
 #include <boardid.h>
+#include <intelblocks/early_graphics.h>
 #include <soc/gpio.h>
 
 /* Pad configuration in ramstage */
@@ -222,6 +223,17 @@ static const struct pad_config romstage_gpio_table[] = {
 	PAD_CFG_GPO(GPP_D2, 0, DEEP),
 };
 
+static const struct pad_config early_graphics_gpio_table[] = {
+	/* F9  : BOOTMPC ==> SLP_S0_GATE_R */
+	PAD_CFG_GPO(GPP_F9, 1, PLTRST),
+};
+
+const struct pad_config *variant_early_graphics_gpio_table(size_t *num)
+{
+	*num = ARRAY_SIZE(early_graphics_gpio_table);
+	return early_graphics_gpio_table;
+}
+
 const struct pad_config *variant_gpio_override_table(size_t *num)
 {
 	*num = ARRAY_SIZE(override_gpio_table);