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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 <lijian.zhao@intel.com>
Change-Id: If717cdd6b73394125df54d90f729ffb4ef37b087
Reviewed-on: https://review.coreboot.org/c/30653
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Duncan Laurie <dlaurie@chromium.org>
This commit is contained in:
Lijian Zhao 2019-01-03 13:32:44 -08:00 committed by Patrick Georgi
parent 08618bd2ab
commit aae963732c
1 changed files with 2 additions and 2 deletions
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4
src/mainboard/google/sarien/variants/arcada/devicetree.cb
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@ -65,8 +65,8 @@ chip soc/intel/cannonlake
}, },
.i2c[1] = { .i2c[1] = {
.speed = I2C_SPEED_FAST, .speed = I2C_SPEED_FAST,
.rise_time_ns = 216, .rise_time_ns = 176,
.fall_time_ns = 28, .fall_time_ns = 15,
}, },
.i2c[4] = { .i2c[4] = {
.early_init = 1, .early_init = 1,