mb/google/poppy/atlas: Enable trackpad
This enables the i2c trackpad on atlas.
BUG=b:75454415
TEST=able to move pointer using trackpad
Change-Id: If4a82aa605ec68fd38e52c13406eaf803f9e86cc
Signed-off-by: Caveh Jalali <caveh@chromium.org>
Reviewed-on: https://review.coreboot.org/25759
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Furquan Shaikh <furquan@google.com>
diff --git a/src/mainboard/google/poppy/variants/atlas/devicetree.cb b/src/mainboard/google/poppy/variants/atlas/devicetree.cb
index 3d31c40..4444549 100644
--- a/src/mainboard/google/poppy/variants/atlas/devicetree.cb
+++ b/src/mainboard/google/poppy/variants/atlas/devicetree.cb
@@ -247,7 +247,17 @@
device pci 14.2 on end # Thermal Subsystem
device pci 15.0 on end # I2C #0 - Touchscreen
device pci 15.1 off end # I2C #1
- device pci 15.2 on end # I2C #2 - Trackpad
+ device pci 15.2 on
+ chip drivers/i2c/generic
+ register "hid" = ""ELAN0000""
+ register "desc" = ""ELAN Touchpad""
+ register "irq" = "ACPI_IRQ_EDGE_LOW(GPP_A19_IRQ)"
+ # TODO(caveh): fix wake source
+ #register "wake" = "GPE0_DWx_19" not possible?
+ register "probed" = "1" # may not be present
+ device i2c 0x15 on end
+ end
+ end # I2C #2 - Trackpad
device pci 15.3 on end # I2C #3 - Camera
device pci 16.0 on end # Management Engine Interface 1
device pci 16.1 off end # Management Engine Interface 2