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mb/google/poppy/variants/nami: Add delay to enable_gpio during Elan power on 

During measurement of signals during Elan touchscreen power on, saw
that the enable_gpio delay was not sufficient as there is a +1.5 ms
delay during power on.  Adding more delay to take this into account.

BUG=b:78311818
BRANCH=None
TEST=probe power on signals to ensure meet timing requirements

Change-Id: Id661a202188a97aef97514ebecd0be6fc022d21e
Signed-off-by: Shelley Chen <shchen@google.com>
Reviewed-on: https://review.coreboot.org/26725
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Furquan Shaikh <furquan@google.com>
This commit is contained in:
Shelley Chen 2018-05-30 20:15:18 -07:00 committed by Patrick Georgi
parent 528448e3fc
commit e3be9c05d5
1 changed files with 1 additions and 1 deletions
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src/mainboard/google/poppy/variants/nami/devicetree.cb
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@ -307,7 +307,7 @@ chip soc/intel/skylake
register "reset_delay_ms" = "20"
register "reset_off_delay_ms" = "2"
register "enable_gpio" = "ACPI_GPIO_OUTPUT_ACTIVE_HIGH(GPP_B4)"
register "enable_delay_ms" = "1"
register "enable_delay_ms" = "5"
register "enable_off_delay_ms" = "100"
register "has_power_resource" = "1"
register "stop_gpio" = "ACPI_GPIO_OUTPUT_ACTIVE_LOW(GPP_C3)"