Config I2C high / low time in device tree to ensure I2C
CLK runs accurately at I2C_SPEED_FAST (400 kHz).
These tuning value is applied from touchpad as a base line,
and EE measured touchscreen/audio runs at 399/396.7kHz after tuning.
BUG=b:173709409
BRANCH=dedede
TEST=Build and check after tuning I2C clock is under 400kHz
Change-Id: I970d69e6361d7cf6fcfc4e5b0b3c5fbfa885367c
Signed-off-by: Tony Huang <tony-huang@quanta.corp-partner.google.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/49020
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Paul Fagerburg <pfagerburg@chromium.org>
Reviewed-by: Karthik Ramasubramanian <kramasub@google.com>
50dc0633db