mb/google/eve: set ACPI subsystem ID
Set the ACPI SSID using Google's project campfire ID for EVE, to allow
coolstar's Windows drivers to identify the device (since it uses a
generic ACPI _HID). Custom drivers are necessary under Windows since
the touchpad firmware is not fully I2C-HID compliant.
TEST=build/boot Win11 on google/eve, verify touchpad fully functional.
Change-Id: I3b8d56ff01d4cca7ba5c02f1aaab1a7049607dbc
Signed-off-by: Matt DeVillier <matt.devillier@gmail.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/76802
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Kyösti Mälkki <kyosti.malkki@gmail.com>
Reviewed-by: CoolStar <coolstarorganization@gmail.com>
diff --git a/src/mainboard/google/eve/devicetree.cb b/src/mainboard/google/eve/devicetree.cb
index 3a78869..d25d582 100644
--- a/src/mainboard/google/eve/devicetree.cb
+++ b/src/mainboard/google/eve/devicetree.cb
@@ -303,6 +303,7 @@
device pci 15.2 on
chip drivers/i2c/hid
register "generic.hid" = ""ACPI0C50""
+ register "generic.sub" = ""1AE0006B""
register "generic.desc" = ""Touchpad""
register "generic.irq" = "ACPI_IRQ_LEVEL_LOW(GPP_B3_IRQ)"
register "hid_desc_reg_offset" = "0x1"