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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>
This commit is contained in:
Kevin Chiu 2017-01-10 22:31:05 +08:00 committed by Aaron Durbin
parent 7a9ec36fd4
commit 5aadea9d76
1 changed files with 15 additions and 0 deletions
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15
src/mainboard/google/reef/variants/pyro/devicetree.cb
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@ -176,6 +176,21 @@ chip soc/intel/apollolake
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