From 6d87ac57e208ee10c7a83551e2d535b230b7a952 Mon Sep 17 00:00:00 2001
From: Frank Wu <frank_wu@compal.corp-partner.google.com>
Date: Mon, 17 Oct 2022 10:29:06 +0800
Subject: [PATCH] mb/google/skyrim/var/frostflow: Update GPIO settings

Configure GPIOs based on GPIO_20221014.xlsx of frostflow.

BUG=b:253506651, b:251367588
BRANCH=None
TEST=FW_NAME=frostflow emerge-skyrim coreboot

Signed-off-by: Frank Wu <frank_wu@compal.corp-partner.google.com>
Change-Id: I02272801c85a7c30d24c834a840e026225956fb8
Reviewed-on: https://review.coreboot.org/c/coreboot/+/68481
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Jon Murphy <jpmurphy@google.com>
Reviewed-by: Karthik Ramasubramanian <kramasub@google.com>
---
 .../skyrim/variants/frostflow/Makefile.inc    |  2 ++
 .../google/skyrim/variants/frostflow/gpio.c   | 22 +++++++++++++++++++
 2 files changed, 24 insertions(+)
 create mode 100644 src/mainboard/google/skyrim/variants/frostflow/gpio.c

diff --git a/src/mainboard/google/skyrim/variants/frostflow/Makefile.inc b/src/mainboard/google/skyrim/variants/frostflow/Makefile.inc
index 88e75bde52..db72b152a7 100644
--- a/src/mainboard/google/skyrim/variants/frostflow/Makefile.inc
+++ b/src/mainboard/google/skyrim/variants/frostflow/Makefile.inc
@@ -1,3 +1,5 @@
 # SPDX-License-Identifier: GPL-2.0-or-later
 
 subdirs-y += ./memory
+
+ramstage-y += gpio.c
diff --git a/src/mainboard/google/skyrim/variants/frostflow/gpio.c b/src/mainboard/google/skyrim/variants/frostflow/gpio.c
new file mode 100644
index 0000000000..a80693fac6
--- /dev/null
+++ b/src/mainboard/google/skyrim/variants/frostflow/gpio.c
@@ -0,0 +1,22 @@
+/* SPDX-License-Identifier: GPL-2.0-or-later */
+
+#include <baseboard/gpio.h>
+#include <baseboard/variants.h>
+#include <commonlib/helpers.h>
+#include <soc/gpio.h>
+
+/* GPIO configuration in ramstage */
+static const struct soc_amd_gpio override_gpio_table[] = {
+	/* EN_PWR_WWAN_X => CAM_PSW_L */
+	PAD_INT(GPIO_8, PULL_NONE, BOTH_EDGES, STATUS_DELIVERY),
+	/* SOC_SAR_INT_L => Unused */
+	PAD_NC(GPIO_17),
+	/* WWAN_RST_L => Unused */
+	PAD_NC(GPIO_42),
+};
+
+void variant_override_gpio_table(const struct soc_amd_gpio **gpio, size_t *size)
+{
+	*size = ARRAY_SIZE(override_gpio_table);
+	*gpio = override_gpio_table;
+}