diff options
| author | Furquan Shaikh <furquan@chromium.org> | 2016-12-12 09:23:01 -0800 |
|---|---|---|
| committer | Martin Roth <martinroth@google.com> | 2016-12-16 18:26:22 +0100 |
| commit | 98915bb7a9ab696b3facf9a2fff3525ebb87531f (patch) | |
| tree | 41f3104d59e746a537dfcc9093c086fc9f7a6e79 /src/mainboard/google/reef/variants | |
| parent | c804826be9b528b53fa9d6842f5c4489d7eff924 (diff) | |
drivers/i2c/generic: Allow mainboards to export reset and enable GPIOs
Add power management type config option that allows mainboards to
either:
1. Define a power resource that uses the reset and enable gpios to
power on and off the device using _ON and _OFF methods, or
2. Export reset and enable GPIOs in _CRS and _DSD so that the OS can
directly toggle the GPIOs as required.
GPIO type needs to be updated in drivers_i2c_generic_config to use
acpi_gpio type so that it can be used for both the above cases.
BUG=chrome-os-partner:60194
BRANCH=None
TEST=Verified that elan touchscreen works fine on reef using exported
GPIOs.
Change-Id: I4d76f193f615cfc4520869dedc55505c109042f6
Signed-off-by: Furquan Shaikh <furquan@chromium.org>
Reviewed-on: https://review.coreboot.org/17797
Tested-by: build bot (Jenkins)
Reviewed-by: Duncan Laurie <dlaurie@chromium.org>
Diffstat (limited to 'src/mainboard/google/reef/variants')
| -rw-r--r-- | src/mainboard/google/reef/variants/baseboard/devicetree.cb | 7 |
1 files changed, 3 insertions, 4 deletions
diff --git a/src/mainboard/google/reef/variants/baseboard/devicetree.cb b/src/mainboard/google/reef/variants/baseboard/devicetree.cb index 49c1ba65d6..1d9dcbb624 100644 --- a/src/mainboard/google/reef/variants/baseboard/devicetree.cb +++ b/src/mainboard/google/reef/variants/baseboard/devicetree.cb @@ -177,10 +177,9 @@ chip soc/intel/apollolake register "desc" = ""ELAN Touchscreen"" register "irq" = "IRQ_EDGE_LOW(GPIO_21_IRQ)" register "probed" = "1" - register "reset_gpio" = "GPIO_36" - register "reset_delay_ms" = "20" - register "enable_gpio" = "GPIO_152" - register "enable_delay_ms" = "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)" device i2c 10 on end end end # - I2C 3 |