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UPSTREAM: google/snappy: Use exported GPIOs and ACPI regulator for touchscreen

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ELAN touchscreen device expects firmware to export GPIOs and ACPI
regulators for managing power to the device. Thus, provide the
required ACPI elements for OS driver to properly manage this device.

BUG=None
BRANCH=None
TEST=Verified that touchscreen works properly on boot-up and after
suspend/resume.

Change-Id: I0b3ec47e93b064f2195ec59bd9b5b8bc1927b3bb
Signed-off-by: Patrick Georgi <pgeorgi@chromium.org>
Original-Commit-Id: bf68f2286c
Original-Change-Id: I78e0c35f60289afe338d140d90784a433ca534ae
Original-Signed-off-by: Wisley Chen <wisley.chen@quantatw.com>
Original-Reviewed-on: https://review.coreboot.org/18163
Original-Tested-by: build bot (Jenkins)
Original-Reviewed-by: Aaron Durbin <adurbin@chromium.org>
Original-Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net>
Reviewed-on: https://chromium-review.googlesource.com/430612
Commit-Ready: Aaron Durbin <adurbin@chromium.org>
Tested-by: Aaron Durbin <adurbin@chromium.org>
Reviewed-by: Aaron Durbin <adurbin@chromium.org>
This commit is contained in:
Wisley Chen 2017-01-18 10:47:37 +08:00 • committed by chrome-bot
commit 88101efe95
1 changed files with 10 additions and 0 deletions
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10
src/mainboard/google/reef/variants/snappy/devicetree.cb
View file

@ -175,6 +175,16 @@ chip soc/intel/apollolake
register "desc" = ""ELAN Touchscreen""
register "irq" = "IRQ_EDGE_LOW(GPIO_21_IRQ)"
register "probed" = "1"
register "pwr_mgmt_type" = "GPIO_EXPORT"
register "reset_gpio" = "ACPI_GPIO_OUTPUT_ACTIVE_HIGH(GPIO_36)"
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