acpi: Reserve hardware ID for custom AMD ACP driver
AMD Audio CoProcessor handles I2S audio on AMD SoC's. Prior to AMD
Ryzen platforms (e.g. STONEY) it is located on the Integrated GFX
device. As the proprietary AMD driver does not support accessing this
easily, reserve a custom ACPI ID from the coreboot namespace so that
another driver can be attached in Windows device manager.
Change-Id: I855b81908ed9ad0587b6367b052c726c36350208
Signed-off-by: CoolStar <coolstarorganization@gmail.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/78405
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Matt DeVillier <matt.devillier@gmail.com>
diff --git a/src/include/acpi/acpi.h b/src/include/acpi/acpi.h
index acd5538..fe7e5fd 100644
--- a/src/include/acpi/acpi.h
+++ b/src/include/acpi/acpi.h
@@ -70,6 +70,7 @@
COREBOOT_ACPI_ID_CBTABLE = 0x0000, /* BOOT0000 */
COREBOOT_ACPI_ID_IGD_GMBUS_ARB = 0x0001, /* BOOT0001 */
COREBOOT_ACPI_ID_IGD_GMBUS_LINK = 0x0002, /* BOOT0002 */
+ COREBOOT_ACPI_ID_AMDGFX_ACP = 0x0003, /* BOOT0003 */
COREBOOT_ACPI_ID_MAX = 0xFFFF, /* BOOTFFFF */
};