google/pyro: Add ELAN touch screen support
Current fw does not create ACPI device for
OS to recognize ELAN touchscreen.
List the touch screen in the devicetree so that
the correct ACPI device are created.
BUG=chrome-os-partner:61803
BRANCH=reef
TEST=emerge-pyro coreboot
Change-Id: I9015fa63ef3aba74b682da3608a05ee49c4947c5
Signed-off-by: Kevin Chiu <Kevin.Chiu@quantatw.com>
Reviewed-on: https://review.coreboot.org/18086
Tested-by: build bot (Jenkins)
Reviewed-by: Aaron Durbin <adurbin@chromium.org>
diff --git a/src/mainboard/google/reef/variants/pyro/devicetree.cb b/src/mainboard/google/reef/variants/pyro/devicetree.cb
index bc06bbb..f7551d6 100644
--- a/src/mainboard/google/reef/variants/pyro/devicetree.cb
+++ b/src/mainboard/google/reef/variants/pyro/devicetree.cb
@@ -176,6 +176,21 @@
register "hid_desc_reg_offset" = "0x1"
device i2c 0xA on end
end
+ chip drivers/i2c/generic
+ register "hid" = ""ELAN0001""
+ register "desc" = ""ELAN Touchscreen""
+ register "irq" = "IRQ_EDGE_LOW(GPIO_21_IRQ)"
+ register "probed" = "1"
+
+ chip drivers/generic/gpio_regulator
+ register "name" = ""vcc33""
+ register "gpio" = "ACPI_GPIO_OUTPUT_ACTIVE_HIGH(GPIO_152)"
+ register "enabled_on_boot" = "1"
+ device generic 0 on end
+ end
+
+ device i2c 10 on end
+ end
end # - I2C 3
device pci 17.0 on
chip drivers/i2c/generic