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>
diff --git a/src/mainboard/google/poppy/variants/nami/devicetree.cb b/src/mainboard/google/poppy/variants/nami/devicetree.cb
index fdbe6ff..4d912d3 100644
--- a/src/mainboard/google/poppy/variants/nami/devicetree.cb
+++ b/src/mainboard/google/poppy/variants/nami/devicetree.cb
@@ -307,7 +307,7 @@
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)"