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authorTony Huang <tony-huang@quanta.corp-partner.google.com>2020-12-31 09:47:10 +0800
committerKarthik Ramasubramanian <kramasub@google.com>2021-01-07 05:32:56 +0000
commit50dc0633dbb5a839e5b4e19f8ecc8faa5e682ad2 (patch)
treed8d3e64b0e63240c034d1a463239fc93e646a317 /src/mainboard/google/dedede/chromeos.c
parent3564c739a2d9c64936ab73c45ce702bd8067c183 (diff)
mb/google/dedede/var/lantis: Config I2C high and low time for touchscreen/audio
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>
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