Nick Vaccaro has uploaded this change for review. ( https://review.coreboot.org/c/coreboot/+/29988
Change subject: mb/google/poppy/variant/nocturne: increase touch panel power-on delay ......................................................................
mb/google/poppy/variant/nocturne: increase touch panel power-on delay
The WACOM 5C01 touch panel power-up delay of 10mS is too aggressive and causes "failed to change power setting" errors in the kernel, so this change increases the power-up delay to 20mS which allows enough time for the WACOM device's i2c controller to wake up.
BUG=b:120090384 BRANCH=none TEST=flash and boot nocturne, log into kernel, execute the following command and make sure the string is not found : dmesg | grep "failed to change power setting"
Change-Id: I1db0b3f5ce666b79d8ada2939ec865233ce52a56 Signed-off-by: Nick Vaccaro nvaccaro@google.com --- M src/mainboard/google/poppy/variants/nocturne/devicetree.cb 1 file changed, 1 insertion(+), 1 deletion(-)
git pull ssh://review.coreboot.org:29418/coreboot refs/changes/88/29988/1
diff --git a/src/mainboard/google/poppy/variants/nocturne/devicetree.cb b/src/mainboard/google/poppy/variants/nocturne/devicetree.cb index 1786502..031c7ff 100644 --- a/src/mainboard/google/poppy/variants/nocturne/devicetree.cb +++ b/src/mainboard/google/poppy/variants/nocturne/devicetree.cb @@ -320,7 +320,7 @@ register "generic.speed" = "I2C_SPEED_FAST_PLUS" register "generic.probed" = "1" register "generic.reset_gpio" = "ACPI_GPIO_OUTPUT_ACTIVE_LOW(GPP_E11)" - register "generic.reset_delay_ms" = "10" + register "generic.reset_delay_ms" = "20" register "generic.enable_gpio" = "ACPI_GPIO_OUTPUT_ACTIVE_HIGH(GPP_C22)" register "generic.enable_delay_ms" = "1" register "generic.has_power_resource" = "1"