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mb/google/hatch/akemi: Set touchpad data hold time more than 

300ns

According to SI team and vendor request, need to tune I2C bus
0 data hold time more than 300ns

BUG=b:146163044
TEST=build firmware and measure I2C bus 0 data hold time

Signed-off-by: Peichao Wang <peichao.wang@bitland.corp-partner.google.com>
Change-Id: I75e33419cbaef746487de6ee8628d07cf08adaa9
Reviewed-on: https://review.coreboot.org/c/coreboot/+/37322
Reviewed-by: Tim Wawrzynczak <twawrzynczak@chromium.org>
Reviewed-by: Philip Chen <philipchen@google.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
This commit is contained in:
Peichao Wang 2019-11-28 17:26:19 +08:00 committed by Patrick Georgi
parent 58ececfb28
commit da6170a223
1 changed files with 1 additions and 0 deletions
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1
src/mainboard/google/hatch/variants/akemi/overridetree.cb
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@ -57,6 +57,7 @@ chip soc/intel/cannonlake
.speed = I2C_SPEED_FAST, .speed = I2C_SPEED_FAST,
.rise_time_ns = 50, .rise_time_ns = 50,
.fall_time_ns = 15, .fall_time_ns = 15,
.data_hold_time_ns = 400,
}, },
.i2c[1] = { .i2c[1] = {
.speed = I2C_SPEED_FAST, .speed = I2C_SPEED_FAST,