3 files changed, 37 insertions, 0 deletions
diff --git a/src/soc/intel/common/block/include/intelblocks/lpc_lib.h b/src/soc/intel/common/block/include/intelblocks/lpc_lib.h
index 0c4780b89c..bb28fc35cf 100644
--- a/src/soc/intel/common/block/include/intelblocks/lpc_lib.h
+++ b/src/soc/intel/common/block/include/intelblocks/lpc_lib.h
@@ -53,6 +53,9 @@ void lpc_open_mmio_window(uintptr_t base, size_t size);
 /* Init SoC Specific LPC features. Common definition will be weak and
 each soc will need to define the init. */
 void lpc_soc_init(struct device *dev);
+/* Create SoC specific SSDT, by default it does nothing so that static
+DSDT could be used. */
+void lpc_soc_fill_ssdt(const struct device *dev);
 /* Fill up LPC IO resource structure inside SoC directory */
 void pch_lpc_soc_fill_io_resources(struct device *dev);
 /* Set LPC BIOS Control BILD bit. */
diff --git a/src/soc/intel/common/block/lpc/lpc.c b/src/soc/intel/common/block/lpc/lpc.c
index b05ee590d4..db06db9a06 100644
--- a/src/soc/intel/common/block/lpc/lpc.c
+++ b/src/soc/intel/common/block/lpc/lpc.c
@@ -16,6 +16,15 @@ __weak void lpc_soc_init(struct device *dev)
 	/* no-op */
 }
 
+/* Create SoC specific SSDT */
+__weak void lpc_soc_fill_ssdt(const struct device *dev)
+{
+	/*
+	 * no-op
+	 * by default it does nothing so that static DSDT could be used
+	 */
+}
+
 /* Fill up LPC IO resource structure inside SoC directory */
 __weak void pch_lpc_soc_fill_io_resources(struct device *dev)
 {
@@ -134,6 +143,7 @@ struct device_operations lpc_ops = {
 #if CONFIG(HAVE_ACPI_TABLES)
 	.write_acpi_tables	= southbridge_write_acpi_tables,
 	.acpi_name		= lpc_acpi_name,
+	.acpi_fill_ssdt	        = lpc_soc_fill_ssdt,
 #endif
 	.init			= lpc_soc_init,
 	.scan_bus		= scan_static_bus,
diff --git a/src/soc/intel/xeon_sp/lpc_gen6.c b/src/soc/intel/xeon_sp/lpc_gen6.c
index d2aaec1888..d4045a877d 100644
--- a/src/soc/intel/xeon_sp/lpc_gen6.c
+++ b/src/soc/intel/xeon_sp/lpc_gen6.c
@@ -6,6 +6,30 @@
 #include <intelblocks/pcr.h>
 #include <soc/pcr_ids.h>
 
+#include <acpi/acpigen.h>
+#include <acpi/acpigen_pci.h>
+
+void lpc_soc_fill_ssdt(const struct device *dev)
+{
+	const char *scope = acpi_device_scope(dev);
+	const char *name = acpi_device_name(dev);
+
+	if (!scope || !name) {
+		printk(BIOS_ERR, "%s: Missing ACPI path/scope\n", dev_path(dev));
+		return;
+	}
+
+	/* Device */
+	acpigen_write_scope(scope);
+	acpigen_write_device(name);
+
+	printk(BIOS_DEBUG, "%s.%s: %s\n", scope, name, dev_path(dev));
+	acpigen_write_ADR_pci_device(dev);
+
+	acpigen_write_device_end(); /* Device */
+	acpigen_write_scope_end(); /* Scope */
+}
+
 void lpc_soc_init(struct device *dev)
 {
 	printk(BIOS_SPEW, "pch: lpc_init\n");