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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>
This commit is contained in:
CoolStar 2023-10-15 16:51:54 -07:00 committed by Matt DeVillier
parent ef68e98ff4
commit ce84a347bf
1 changed files with 1 additions and 0 deletions
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src/include/acpi/acpi.h
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@ -70,6 +70,7 @@ enum coreboot_acpi_ids {
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 */
};