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authorNick Vaccaro <nvaccaro@google.com>2018-11-30 16:02:14 -0800
committerPatrick Georgi <pgeorgi@google.com>2018-12-03 13:08:23 +0000
commitf39e0f9318c44dc51f7b439c84bfe2fbe9940960 (patch)
tree3f2ceed1a3ed2b7b9745764d020b4ff20c3053a1 /src/mainboard/google/poppy
parentc4ce11b8bff7af7c387014094fbb2877725cfe53 (diff)
downloadcoreboot-f39e0f9318c44dc51f7b439c84bfe2fbe9940960.tar.xz
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> Reviewed-on: https://review.coreboot.org/c/29988 Reviewed-by: Duncan Laurie <dlaurie@chromium.org> Reviewed-by: Furquan Shaikh <furquan@google.com> Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Diffstat (limited to 'src/mainboard/google/poppy')
-rw-r--r--src/mainboard/google/poppy/variants/nocturne/devicetree.cb2
1 files changed, 1 insertions, 1 deletions
diff --git a/src/mainboard/google/poppy/variants/nocturne/devicetree.cb b/src/mainboard/google/poppy/variants/nocturne/devicetree.cb
index 1786502365..031c7ff369 100644
--- a/src/mainboard/google/poppy/variants/nocturne/devicetree.cb
+++ b/src/mainboard/google/poppy/variants/nocturne/devicetree.cb
@@ -320,7 +320,7 @@ chip soc/intel/skylake
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"