CoolStar has uploaded this change for review. ( https://review.coreboot.org/c/coreboot/+/76413?usp=email )
Change subject: acpi: Reserve hardware IDs for custom Intel GMBus I2C driver ......................................................................
acpi: Reserve hardware IDs for custom Intel GMBus I2C driver
GMBus is an I2C compatible link on Intel IGPUs. Most non-Linux OS's don't support accessing this ordinarily, so a custom driver is needed with a bit of ACPI hackery. Reserve 2 IDs from the coreboot namespace so that the 2 devices required can be populated in Windows device manager
Change-Id: I389612441e96ce2fc5e006051e523661953eba6e Signed-off-by: CoolStar coolstarorganization@gmail.com --- M src/include/acpi/acpi.h 1 file changed, 2 insertions(+), 0 deletions(-)
git pull ssh://review.coreboot.org:29418/coreboot refs/changes/13/76413/1
diff --git a/src/include/acpi/acpi.h b/src/include/acpi/acpi.h index 1704393..69bc00e 100644 --- a/src/include/acpi/acpi.h +++ b/src/include/acpi/acpi.h @@ -68,6 +68,8 @@ /* List of ACPI HID that use the coreboot ACPI ID */ 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_MAX = 0xFFFF, /* BOOTFFFF */ };