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mb/google/hatch/akemi: Tune I2C bus 1 clock 

Tune I2C bus 1 clock and insure it meets I2C spec.

BUG=b:142683257
TEST==flash coreboot to the DUT and measure I2C bus 1 clock
frequency less than 400KHz

Signed-off-by: Peichao.Wang <peichao.wang@bitland.corp-partner.google.com>
Change-Id: Id4cdbad4dd9d451763fb536988402d6e6fe3a378
Reviewed-on: https://review.coreboot.org/c/coreboot/+/36050
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Tim Wawrzynczak <twawrzynczak@chromium.org>
This commit is contained in:
Peichao Wang 2019-10-15 11:29:36 +08:00 committed by Patrick Georgi
parent f88c011546
commit 04b5123aed
1 changed files with 2 additions and 0 deletions
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2
src/mainboard/google/hatch/variants/akemi/overridetree.cb
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@ -35,6 +35,8 @@ chip soc/intel/cannonlake
}, },
.i2c[0] = { .i2c[0] = {
.speed = I2C_SPEED_FAST, .speed = I2C_SPEED_FAST,
.rise_time_ns = 50,
.fall_time_ns = 15,
}, },
.i2c[1] = { .i2c[1] = {
.speed = I2C_SPEED_FAST, .speed = I2C_SPEED_FAST,