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authorShelley Chen <shchen@google.com>2018-05-30 20:15:18 -0700
committerPatrick Georgi <pgeorgi@google.com>2018-06-06 10:29:20 +0000
commite3be9c05d503739b14fb1b0a303a3ea4f8d5e032 (patch)
treef33ae0faeddf0b99edf00da2e0719a1d258db617
parent528448e3fc5c82e982817b81b643084977db9cdf (diff)
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>
-rw-r--r--src/mainboard/google/poppy/variants/nami/devicetree.cb2
1 files changed, 1 insertions, 1 deletions
diff --git a/src/mainboard/google/poppy/variants/nami/devicetree.cb b/src/mainboard/google/poppy/variants/nami/devicetree.cb
index fdbe6ffc75..4d912d3863 100644
--- a/src/mainboard/google/poppy/variants/nami/devicetree.cb
+++ b/src/mainboard/google/poppy/variants/nami/devicetree.cb
@@ -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)"