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mb/google/sarein: Add power control for Arcada touchscreen 

This change will save touchscreen power leakage 2-3mW in S0iX and
increase T2 display time delay to meet display panel requirement.

BUG=b:129899315
TEST= Measure touchscreen power from Arcada during S0iX

Change-Id: I4b8f3fdc0d107b080c5febe6fa5d29ea5d1ed0fc
Signed-off-by: Roy Mingi Park <roy.mingi.park@intel.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/32311
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Lijian Zhao <lijian.zhao@intel.com>
This commit is contained in:
Roy Mingi Park 2019-04-12 21:29:14 -07:00 committed by Patrick Georgi
parent e98a751823
commit ba851170fb
1 changed files with 4 additions and 2 deletions
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6
src/mainboard/google/sarien/variants/arcada/devicetree.cb
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@ -302,8 +302,10 @@ chip soc/intel/cannonlake
register "generic.desc" = ""Wacom Touchscreen"" register "generic.desc" = ""Wacom Touchscreen""
register "generic.irq" = "ACPI_IRQ_LEVEL_LOW(GPP_C23_IRQ)" register "generic.irq" = "ACPI_IRQ_LEVEL_LOW(GPP_C23_IRQ)"
register "generic.probed" = "1" register "generic.probed" = "1"
register "generic.enable_gpio" = "ACPI_GPIO_OUTPUT_ACTIVE_HIGH(GPP_E7)" register "generic.reset_gpio" = "ACPI_GPIO_OUTPUT_ACTIVE_LOW(GPP_E7)"
register "generic.enable_delay_ms" = "5" register "generic.reset_delay_ms" = "10"
register "generic.enable_gpio" = "ACPI_GPIO_OUTPUT_ACTIVE_HIGH(GPP_B21)"
register "generic.enable_delay_ms" = "55"
register "generic.has_power_resource" = "1" register "generic.has_power_resource" = "1"
register "generic.disable_gpio_export_in_crs" = "1" register "generic.disable_gpio_export_in_crs" = "1"
register "hid_desc_reg_offset" = "0x1" register "hid_desc_reg_offset" = "0x1"