diff options
| author | Wisley Chen <wisley.chen@quantatw.com> | 2021-01-05 21:53:41 +0800 |
|---|---|---|
| committer | Patrick Georgi <pgeorgi@google.com> | 2021-01-07 08:19:16 +0000 |
| commit | 0363d6da2a674b3ec118b777274abb198ae79149 (patch) | |
| tree | 452ebaf61231128c6cb8394c5cd8d3f4f998c02a | |
| parent | fbf6ae127a34605373db92220cf8fae03e209bef (diff) | |
mb/google/volteer/var/elemi: Tune i2c frequency
Tuning i2c frequency for elemi
I2C0: 396.6 KHz
I2C1: 395.9 KHz
I2C5: 397.1 KHz
BUG=b:176794161
BRANCH=volteer
TEST=emerge-voleteer coreboot, and measure i2c clock.
Change-Id: I23b04a9b5ff8873d9de12e762e8e2786ef474ac0
Signed-off-by: Wisley Chen <wisley.chen@quantatw.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/49116
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Tim Wawrzynczak <twawrzynczak@chromium.org>
| -rw-r--r-- | src/mainboard/google/volteer/variants/elemi/overridetree.cb | 19 |
1 files changed, 19 insertions, 0 deletions
diff --git a/src/mainboard/google/volteer/variants/elemi/overridetree.cb b/src/mainboard/google/volteer/variants/elemi/overridetree.cb index af58b81701..c30dce39b4 100644 --- a/src/mainboard/google/volteer/variants/elemi/overridetree.cb +++ b/src/mainboard/google/volteer/variants/elemi/overridetree.cb @@ -36,9 +36,21 @@ chip soc/intel/tigerlake }, .i2c[0] = { .speed = I2C_SPEED_FAST, + .speed_config[0] = { + .speed = I2C_SPEED_FAST, + .scl_lcnt = 160, + .scl_hcnt = 75, + .sda_hold = 36, + }, }, .i2c[1] = { .speed = I2C_SPEED_FAST, + .speed_config[0] = { + .speed = I2C_SPEED_FAST, + .scl_lcnt = 158, + .scl_hcnt = 75, + .sda_hold = 36, + }, }, .i2c[2] = { .speed = I2C_SPEED_FAST, @@ -48,6 +60,13 @@ chip soc/intel/tigerlake }, .i2c[5] = { .speed = I2C_SPEED_FAST, + .speed_config[0] = { + .speed = I2C_SPEED_FAST, + .scl_lcnt = 158, + .scl_hcnt = 75, + .sda_hold = 36, + }, + }, }" |