diff options
| author | Wisley Chen <wisley.chen@quantatw.com> | 2019-12-09 19:14:13 +0800 |
|---|---|---|
| committer | Patrick Georgi <pgeorgi@google.com> | 2019-12-11 11:36:43 +0000 |
| commit | 42174235ba6a7cfac8243a4c2aedb1271a4659fe (patch) | |
| tree | 3b789d1f14fd5b7823ad253631ce6c665b1f4dcd /src/mainboard | |
| parent | 106abb82fe122aceb7656641b29a7d676f260c48 (diff) | |
mb/goog/hatch/var/dratini: Tune i2c frequency to 400 KHz
Tuning i2c frequency for dratini:
I2C0: 396 KHz
I2C1: 398 KHz
I2C3: unused
I2C4: 394 KHz
BUG=b:145891557
BRANCH=hatch
TEST=emerge-hatch coreboot chromeos-bootimage
Change-Id: I1431554fbce5f3ce113ef1a934e39448e7ba321c
Signed-off-by: Wisley Chen <wisley.chen@quantatw.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/37605
Reviewed-by: Paul Fagerburg <pfagerburg@chromium.org>
Reviewed-by: Tim Wawrzynczak <twawrzynczak@chromium.org>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Diffstat (limited to 'src/mainboard')
| -rw-r--r-- | src/mainboard/google/hatch/variants/dratini/overridetree.cb | 9 |
1 files changed, 6 insertions, 3 deletions
diff --git a/src/mainboard/google/hatch/variants/dratini/overridetree.cb b/src/mainboard/google/hatch/variants/dratini/overridetree.cb index 28b18b8b7f..564a14d93c 100644 --- a/src/mainboard/google/hatch/variants/dratini/overridetree.cb +++ b/src/mainboard/google/hatch/variants/dratini/overridetree.cb @@ -35,15 +35,18 @@ chip soc/intel/cannonlake }, .i2c[0] = { .speed = I2C_SPEED_FAST, + .rise_time_ns = 50, + .fall_time_ns = 15, }, .i2c[1] = { .speed = I2C_SPEED_FAST, - }, - .i2c[3] = { - .speed = I2C_SPEED_FAST, + .rise_time_ns = 60, + .fall_time_ns = 25, }, .i2c[4] = { .speed = I2C_SPEED_FAST, + .rise_time_ns = 60, + .fall_time_ns = 60, }, }" |