Change in coreboot[master]: mb/google/dedede/var/blipper: Enable touchpad support

[zanxi chen (Code Review)]

zanxi chen has uploaded this change for review. ( https://review.coreboot.org/c/coreboot/+/51188 )

Change subject: mb/google/dedede/var/blipper: Enable touchpad support
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mb/google/dedede/var/blipper: Enable touchpad support

Add touchpad into devicetree for blipper.

BUG=b:172787208
BRANCH=dedede
TEST=built storo firmware and verified touchpad function

Change-Id: I2c9b61ba9d282f994e2f756bafe4af1091d4d617
Signed-off-by: Zanxi Chen 
---
M src/mainboard/google/dedede/variants/blipper/overridetree.cb
1 file changed, 19 insertions(+), 1 deletion(-)

git pull ssh://review.coreboot.org:29418/coreboot refs/changes/88/51188/1

diff --git a/src/mainboard/google/dedede/variants/blipper/overridetree.cb b/src/mainboard/google/dedede/variants/blipper/overridetree.cb
index 404024b..82f15c6 100644
--- a/src/mainboard/google/dedede/variants/blipper/overridetree.cb
+++ b/src/mainboard/google/dedede/variants/blipper/overridetree.cb
@@ -37,6 +37,24 @@
    }"

device domain 0 on
-		device pci 15.0 on end
+		device pci 15.0 on
+			chip drivers/i2c/generic
+				register "hid" = ""ELAN0000""
+				register "desc" = ""ELAN Touchpad""
+				register "irq" = "ACPI_IRQ_WAKE_EDGE_LOW(GPP_B3_IRQ)"
+				register "wake" = "GPE0_DW0_03"
+				register "probed" = "1"
+				device i2c 15 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_B3_IRQ)"
+				register "generic.wake" = "GPE0_DW0_03"
+				register "generic.probed" = "1"
+				register "hid_desc_reg_offset" = "0x20"
+				device i2c 0x2c on end
+			end
+		end # I2C 0
    end
 end