[XS] Change in coreboot[main]: mb/google/rex/var/kanix: Add Synaptics touchpad

[Subrata Banik (Code Review)]

Subrata Banik has submitted this change. ( https://review.coreboot.org/c/coreboot/+/85776?usp=email )

Change subject: mb/google/rex/var/kanix: Add Synaptics touchpad
......................................................................

mb/google/rex/var/kanix: Add Synaptics touchpad

BUG=None
BRANCH=firmware-rex-15709.B
TEST=1. emerge-rex coreboot
     2. check touchpad function is working properly.

Change-Id: I89b9e24f98c1e7af571507283469411fd389431a
Signed-off-by: Kenneth Chan 
Reviewed-on: https://review.coreboot.org/c/coreboot/+/85776
Tested-by: build bot (Jenkins) 
Reviewed-by: Subrata Banik 
Reviewed-by: Tyler Wang 
---
M src/mainboard/google/rex/variants/kanix/overridetree.cb
1 file changed, 9 insertions(+), 0 deletions(-)

Approvals:
  Tyler Wang: Looks good to me, approved
  Subrata Banik: Looks good to me, approved
  build bot (Jenkins): Verified

diff --git a/src/mainboard/google/rex/variants/kanix/overridetree.cb b/src/mainboard/google/rex/variants/kanix/overridetree.cb
index 244f974..abe5f3e 100644
--- a/src/mainboard/google/rex/variants/kanix/overridetree.cb
+++ b/src/mainboard/google/rex/variants/kanix/overridetree.cb
@@ -450,6 +450,15 @@
    			register "hid_desc_reg_offset" = "0x20"
    			device i2c 68 on end
    		end
+			chip drivers/i2c/hid
+				register "generic.hid" = ""PNP0C50""
+				register "generic.desc" = ""Synaptics Touchpad""
+				register "generic.irq" = "ACPI_IRQ_WAKE_LEVEL_LOW(GPP_B00_IRQ)"
+				register "generic.wake" = "GPE0_DW0_00"
+				register "generic.detect" = "1"
+				register "hid_desc_reg_offset" = "0x20"
+				device i2c 2c on end
+			end
    	end
    	device ref i2c4 on
    		chip drivers/i2c/tpm