mb/google/skyrim: Fix eSPI configuration

* Use GPE 24 since it doesn't conflict with any existing GEVENTS.
* Remove IRQ 12 mapping since it's not used.
* Unmask IRQ1 in PM registers.
* Use the new SMITYPE_ESPI_SCI_B SCI.

BUG=b:227282870
TEST=Build and boot to OS in Skyrim.

Signed-off-by: Jon Murphy <jpmurphy@google.com>
Signed-off-by: Raul E Rangel <rrangel@chromium.org>
Change-Id: I7e9816d67500365ed1d2ee39ef184a1f60321ca1
Reviewed-on: https://review.coreboot.org/c/coreboot/+/63704
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Karthik Ramasubramanian <kramasub@google.com>
diff --git a/src/mainboard/google/skyrim/ec.c b/src/mainboard/google/skyrim/ec.c
index bc29833..05994eb 100644
--- a/src/mainboard/google/skyrim/ec.c
+++ b/src/mainboard/google/skyrim/ec.c
@@ -10,8 +10,8 @@
 
 static const struct sci_source espi_sci_sources[] = {
 	{
-		.scimap = SMITYPE_ESPI_SYS,
-		.gpe = GEVENT_3,
+		.scimap = SMITYPE_ESPI_SCI_B,
+		.gpe = EC_SCI_GPI,
 		.direction = SMI_SCI_LVL_HIGH, /* enum smi_sci_lvl */
 		.level = SMI_SCI_EDG, /* enum smi_sci_dir */
 	}
diff --git a/src/mainboard/google/skyrim/mainboard.c b/src/mainboard/google/skyrim/mainboard.c
index 7c89f49..cb91555 100644
--- a/src/mainboard/google/skyrim/mainboard.c
+++ b/src/mainboard/google/skyrim/mainboard.c
@@ -1,5 +1,6 @@
 /* SPDX-License-Identifier: GPL-2.0-or-later */
 
+#include <amdblocks/acpimmio.h>
 #include <amdblocks/amd_pci_util.h>
 #include <baseboard/variants.h>
 #include <console/console.h>
@@ -111,6 +112,10 @@
 	init_tables();
 	/* Initialize the PIRQ data structures for consumption */
 	pirq_setup();
+
+	/* TODO: b/184678786 - Move into espi_config */
+	/* Unmask eSPI IRQ 1 (Keyboard) */
+	pm_write32(PM_ESPI_INTR_CTRL, PM_ESPI_DEV_INTR_MASK & ~(BIT(1)));
 }
 
 struct chip_operations mainboard_ops = {
diff --git a/src/mainboard/google/skyrim/variants/baseboard/devicetree.cb b/src/mainboard/google/skyrim/variants/baseboard/devicetree.cb
index a6894ee..f0d1039 100644
--- a/src/mainboard/google/skyrim/variants/baseboard/devicetree.cb
+++ b/src/mainboard/google/skyrim/variants/baseboard/devicetree.cb
@@ -35,7 +35,7 @@
 		.oob_ch_en = 0,
 		.flash_ch_en = 0,
 
-		.vw_irq_polarity = ESPI_VW_IRQ_LEVEL_HIGH(1) | ESPI_VW_IRQ_LEVEL_HIGH(12),
+		.vw_irq_polarity = ESPI_VW_IRQ_LEVEL_HIGH(1),
 	}"
 
 	register "i2c_scl_reset" = "GPIO_I2C0_SCL | GPIO_I2C1_SCL |
diff --git a/src/mainboard/google/skyrim/variants/baseboard/include/baseboard/ec.h b/src/mainboard/google/skyrim/variants/baseboard/include/baseboard/ec.h
index d66d3cb..f10146d 100644
--- a/src/mainboard/google/skyrim/variants/baseboard/include/baseboard/ec.h
+++ b/src/mainboard/google/skyrim/variants/baseboard/include/baseboard/ec.h
@@ -52,7 +52,7 @@
  */
 
 /* Set GPI for SCI */
-#define EC_SCI_GPI GEVENT_3 /* eSPI system event -> GPE 3 */
+#define EC_SCI_GPI GEVENT_24 /* eSPI system event -> GPE 24 */
 
 /* Enable LID switch and provide wake pin for EC */
 #define EC_ENABLE_LID_SWITCH