1 files changed, 53 insertions, 0 deletions
diff --git a/src/mainboard/amd/pademelon/gpio.c b/src/mainboard/amd/pademelon/gpio.c
new file mode 100644
index 000000000000..0de2c0a1904f
--- /dev/null
+++ b/src/mainboard/amd/pademelon/gpio.c
@@ -0,0 +1,53 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+
+#include <amdblocks/agesawrapper.h>
+#include <amdblocks/BiosCallOuts.h>
+#include <soc/gpio.h>
+#include <soc/southbridge.h>
+#include "gpio.h"
+
+/*
+ * As a rule of thumb, GPIO pins used by coreboot should be initialized at
+ * bootblock while GPIO pins used only by the OS should be initialized at
+ * ramstage.
+ */
+static const struct soc_amd_gpio gpio_set_stage_reset[] = {
+	/* GFX presence detect */
+	PAD_GPI(GPIO_9, PULL_DOWN),
+	/* VDDP_VCTRL */
+	PAD_GPO(GPIO_40, HIGH),
+	/* PC SPKR */
+	PAD_NF(GPIO_91, SPKR, PULL_NONE),
+};
+
+static const struct soc_amd_gpio gpio_set_stage_ram[] = {
+#if CONFIG(HAVE_ACPI_RESUME)
+	/* PCIE_WAKE - default, do not program */
+
+	/* DEVSLP1 */
+	PAD_NF(GPIO_70, DEVSLP1, PULL_UP),
+	/* WLAND */
+	PAD_WAKE(GPIO_137, PULL_UP, LEVEL_LOW, S3),
+#else
+	/* PCIE_WAKE, SCI */
+	PAD_NF_SCI(GPIO_2, WAKE_L, PULL_UP, EDGE_LOW),
+	/* DEVSLP1 - default as GPIO, do not program */
+
+	/* WLAND - default as GPIO, do not program */
+
+#endif /* HAVE_ACPI_RESUME */
+	/* BLINK - reselect GPIO OUTPUT HIGH to force BLINK */
+	PAD_GPO(GPIO_11, HIGH),
+};
+
+const struct soc_amd_gpio *early_gpio_table(size_t *size)
+{
+	*size = ARRAY_SIZE(gpio_set_stage_reset);
+	return gpio_set_stage_reset;
+}
+
+const struct soc_amd_gpio *gpio_table(size_t *size)
+{
+	*size = ARRAY_SIZE(gpio_set_stage_ram);
+	return gpio_set_stage_ram;
+}