2 files changed, 51 insertions, 0 deletions
diff --git a/src/soc/amd/cezanne/acpi/mmio.asl b/src/soc/amd/cezanne/acpi/mmio.asl
index 930ca169d3..c138cbcb03 100644
--- a/src/soc/amd/cezanne/acpi/mmio.asl
+++ b/src/soc/amd/cezanne/acpi/mmio.asl
@@ -58,6 +58,42 @@ Device (GPIO)
 	}
 }
 
+Device (MMC0)
+{
+	Name (_HID, "AMDI0040")
+	Name (_UID, 0x0)
+	Method (_CRS, 0) {
+		Local0 = ResourceTemplate() {
+			Interrupt (
+				ResourceConsumer,
+				Level,
+				ActiveLow,
+				Exclusive, , , IRQR)
+			{ 0 }
+			Memory32Fixed (ReadWrite, APU_EMMC_BASE, 0x1000)
+		}
+		CreateDWordField (Local0, IRQR._INT, IRQN)
+		If (PICM) {
+			IRQN = IMMC
+		} Else {
+			IRQN = PMMC
+		}
+		If (IRQN == 0x1f) {
+			Return (ResourceTemplate(){
+				Memory32Fixed (ReadWrite, APU_EMMC_BASE, 0x1000)
+			})
+		} Else {
+			Return (Local0)
+		}
+	}
+
+	Name (STAT, 0x0)
+	Method (_STA, 0x0, NotSerialized)
+	{
+		Return (STAT)
+	}
+}
+
 Device (FUR0)
 {
 	Name (_HID, "AMDI0020")
diff --git a/src/soc/amd/common/block/emmc/emmc.c b/src/soc/amd/common/block/emmc/emmc.c
index a068031a4f..09d235076c 100644
--- a/src/soc/amd/common/block/emmc/emmc.c
+++ b/src/soc/amd/common/block/emmc/emmc.c
@@ -1,5 +1,6 @@
 /* SPDX-License-Identifier: GPL-2.0-only */
 
+#include <acpi/acpigen.h>
 #include <amdblocks/aoac.h>
 #include <device/device.h>
 #include <soc/aoac_defs.h>
@@ -15,9 +16,23 @@ static void emmc_enable(struct device *dev)
 		power_off_aoac_device(FCH_AOAC_DEV_EMMC);
 }
 
+static const char *emmc_acpi_name(const struct device *dev)
+{
+	return "MMC0";
+}
+
+static void emmc_acpi_fill_ssdt(const struct device *dev)
+{
+	acpigen_write_scope(acpi_device_path(dev));
+	acpigen_write_store_int_to_namestr(acpi_device_status(dev), "STAT");
+	acpigen_pop_len(); /* Scope */
+}
+
 struct device_operations amd_emmc_mmio_ops = {
 	.read_resources = emmc_read_resources,
 	.set_resources = noop_set_resources,
 	.scan_bus = scan_static_bus,
 	.enable = emmc_enable,
+	.acpi_name = emmc_acpi_name,
+	.acpi_fill_ssdt = emmc_acpi_fill_ssdt,
 };