From aae963732ce7cd317d6619001ba8dfb2c2385ad5 Mon Sep 17 00:00:00 2001 From: Lijian Zhao Date: Thu, 3 Jan 2019 13:32:44 -0800 Subject: mb/google/sarien: Correct I2C bus clock for touchpad Elan touchpad require connected i2c clock to be running at 400Khz, with the modification can get 404Khz speed from Arcada EVT platform. BUG=b:119628524 TEST=Build and boot up on Arcada platform, measure the i2c clock is around 400Khz. Signed-off-by: Lijian Zhao Change-Id: If717cdd6b73394125df54d90f729ffb4ef37b087 Reviewed-on: https://review.coreboot.org/c/30653 Tested-by: build bot (Jenkins) Reviewed-by: Duncan Laurie --- src/mainboard/google/sarien/variants/arcada/devicetree.cb | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) (limited to 'src/mainboard') diff --git a/src/mainboard/google/sarien/variants/arcada/devicetree.cb b/src/mainboard/google/sarien/variants/arcada/devicetree.cb index 52840de860..5fdf8fd771 100644 --- a/src/mainboard/google/sarien/variants/arcada/devicetree.cb +++ b/src/mainboard/google/sarien/variants/arcada/devicetree.cb @@ -65,8 +65,8 @@ chip soc/intel/cannonlake }, .i2c[1] = { .speed = I2C_SPEED_FAST, - .rise_time_ns = 216, - .fall_time_ns = 28, + .rise_time_ns = 176, + .fall_time_ns = 15, }, .i2c[4] = { .early_init = 1, -- cgit v1.2.3