From 2fe0d75d42904b224be344b1865a2582b20ecea2 Mon Sep 17 00:00:00 2001 From: Furquan Shaikh Date: Tue, 13 Dec 2016 09:15:07 -0800 Subject: google/reef: 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=chrome-os-partner:60194 BRANCH=None TEST=Verified that touchscreen works properly on boot-up and after suspend/resume. Change-Id: I298ca5de9c0ae302309d87e3dffb65f9be1e882e Signed-off-by: Furquan Shaikh Reviewed-on: https://review.coreboot.org/17799 Tested-by: build bot (Jenkins) Reviewed-by: Aaron Durbin Reviewed-by: Duncan Laurie --- src/mainboard/google/reef/Kconfig | 3 +++ src/mainboard/google/reef/variants/baseboard/devicetree.cb | 9 ++++++++- 2 files changed, 11 insertions(+), 1 deletion(-) (limited to 'src/mainboard') diff --git a/src/mainboard/google/reef/Kconfig b/src/mainboard/google/reef/Kconfig index c5625b68a0..0766577a1f 100644 --- a/src/mainboard/google/reef/Kconfig +++ b/src/mainboard/google/reef/Kconfig @@ -50,6 +50,9 @@ config DRIVERS_I2C_WACOM config DRIVERS_PS2_KEYBOARD default y +config DRIVERS_GENERIC_GPIO_REGULATOR + default y + config MAINBOARD_DIR string default google/reef diff --git a/src/mainboard/google/reef/variants/baseboard/devicetree.cb b/src/mainboard/google/reef/variants/baseboard/devicetree.cb index 1d9dcbb624..7db4f156b8 100644 --- a/src/mainboard/google/reef/variants/baseboard/devicetree.cb +++ b/src/mainboard/google/reef/variants/baseboard/devicetree.cb @@ -179,7 +179,14 @@ chip soc/intel/apollolake register "probed" = "1" register "pwr_mgmt_type" = "GPIO_EXPORT" register "reset_gpio" = "ACPI_GPIO_OUTPUT_ACTIVE_HIGH(GPIO_36)" - register "enable_gpio" = "ACPI_GPIO_OUTPUT_ACTIVE_HIGH(GPIO_152)" + + 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 -- cgit v1.2.3