diff options
| author | Wisley Chen <wisley.chen@quantatw.com> | 2017-01-18 10:47:37 +0800 |
|---|---|---|
| committer | Martin Roth <martinroth@google.com> | 2017-01-20 17:22:14 +0100 |
| commit | bf68f2286c4850f175a3ea350ebfa67a463f3f33 (patch) | |
| tree | 805a8c4f26c15bea6640e730fb6bd8e4d37aad3a /src | |
| parent | 32997fb0bcb9f4183789331a91fd83138776b96f (diff) | |
| download | coreboot-bf68f2286c4850f175a3ea350ebfa67a463f3f33.tar.xz | |
google/snappy: Use exported GPIOs and ACPI regulator for touchscreen
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: I78e0c35f60289afe338d140d90784a433ca534ae
Signed-off-by: Wisley Chen <wisley.chen@quantatw.com>
Reviewed-on: https://review.coreboot.org/18163
Tested-by: build bot (Jenkins)
Reviewed-by: Aaron Durbin <adurbin@chromium.org>
Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net>
Diffstat (limited to 'src')
| -rw-r--r-- | src/mainboard/google/reef/variants/snappy/devicetree.cb | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/src/mainboard/google/reef/variants/snappy/devicetree.cb b/src/mainboard/google/reef/variants/snappy/devicetree.cb index d420481180..d249e53952 100644 --- a/src/mainboard/google/reef/variants/snappy/devicetree.cb +++ b/src/mainboard/google/reef/variants/snappy/devicetree.cb @@ -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 |