From 1e7d69944d3c406bae4c31ac21e7967681f432a6 Mon Sep 17 00:00:00 2001 From: Dtrain Hsu Date: Wed, 16 Jan 2019 18:07:46 +0800 Subject: mb/google/sarien/variants/sarien: Adjust TP/TS/H1 I2C CLK to meet spec After adjustment on Sarien EVT TouchScreen: 380.7 KHz TouchPad: 379.3 KHz H1: 392.2 KHz BUG=b:122657195 BRANCH=master TEST=emerge-sarien coreboot chromeos-bootimage measure by scope Signed-off-by: Dtrain Hsu Change-Id: I0dd92b054d934b38a17898dc8ce9cc18bda1633f Reviewed-on: https://review.coreboot.org/c/30949 Reviewed-by: Lijian Zhao Reviewed-by: Duncan Laurie Reviewed-by: Paul Menzel Tested-by: build bot (Jenkins) --- src/mainboard/google/sarien/variants/sarien/devicetree.cb | 10 ++++++---- 1 file changed, 6 insertions(+), 4 deletions(-) diff --git a/src/mainboard/google/sarien/variants/sarien/devicetree.cb b/src/mainboard/google/sarien/variants/sarien/devicetree.cb index 4334c45083..59f1f30c88 100644 --- a/src/mainboard/google/sarien/variants/sarien/devicetree.cb +++ b/src/mainboard/google/sarien/variants/sarien/devicetree.cb @@ -81,17 +81,19 @@ chip soc/intel/cannonlake .chipset_lockdown = CHIPSET_LOCKDOWN_COREBOOT, .i2c[0] = { .speed = I2C_SPEED_FAST, + .rise_time_ns = 190, + .fall_time_ns = 120, }, .i2c[1] = { .speed = I2C_SPEED_FAST, - .rise_time_ns = 176, - .fall_time_ns = 15, + .rise_time_ns = 52, + .fall_time_ns = 110, }, .i2c[4] = { .early_init = 1, .speed = I2C_SPEED_FAST, - .rise_time_ns = 280, - .fall_time_ns = 90, + .rise_time_ns = 36, + .fall_time_ns = 99, }, }" -- cgit v1.2.3