diff options
| author | Jamie Chen <jamie_chen@compal.corp-partner.google.com> | 2023-05-02 13:32:42 +0800 |
|---|---|---|
| committer | Matt DeVillier <matt.devillier@amd.corp-partner.google.com> | 2023-05-03 16:08:12 +0000 |
| commit | 22b226724e71822d81d142a866f892dd0949e954 (patch) | |
| tree | 55f82a8cbc8b8bf92cc4ee5d5e8f7fa67dc47731 /src | |
| parent | 50931f8ea0f450981b354f6d24d7e013c79d8ff4 (diff) | |
mb/google/brya/var/omnigul: Adjust I2C3 and I2C5 Waveform meet to SPEC
Tuning i2c frequency ,timing ,Waveform meet to SPEC
i2c frequency :
I2C0=>399.8khz / Setup Time:1765ns / Hold Time:82.35ns.
I2C1=>390.4khz / Setup Time:1.788us / Hold Time:70.58ns.
I2C3=>308.7khz / Setup Time:1.482us / Hold Time:0.4us.
I2C5=>390.8khz / Setup Time:1.218us / Hold Time:0.405us.
BUG=b:275061994
BRANCH=firmware-brya-14505.B
TEST=emerge-brya coreboot,
EE check OK with test FW and TP function is normal.
Change-Id: I5b77cd3fd3ff00804f1b8dd5828dc831a9732566
Signed-off-by: Jamie Chen <jamie_chen@compal.corp-partner.google.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/74880
Reviewed-by: Subrata Banik <subratabanik@google.com>
Reviewed-by: Derek Huang <derekhuang@google.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Dtrain Hsu <dtrain_hsu@compal.corp-partner.google.com>
Diffstat (limited to 'src')
| -rw-r--r-- | src/mainboard/google/brya/variants/omnigul/overridetree.cb | 14 |
1 files changed, 12 insertions, 2 deletions
diff --git a/src/mainboard/google/brya/variants/omnigul/overridetree.cb b/src/mainboard/google/brya/variants/omnigul/overridetree.cb index dd78eda680..f231de21cb 100644 --- a/src/mainboard/google/brya/variants/omnigul/overridetree.cb +++ b/src/mainboard/google/brya/variants/omnigul/overridetree.cb @@ -43,13 +43,23 @@ chip soc/intel/alderlake .speed = I2C_SPEED_FAST, .rise_time_ns = 600, .fall_time_ns = 400, - .data_hold_time_ns = 50, + .speed_config[0] = { + .speed = I2C_SPEED_FAST, + .scl_lcnt = 190, + .scl_hcnt = 110, + .sda_hold = 40, + } }, .i2c[5] = { .speed = I2C_SPEED_FAST, .rise_time_ns = 650, .fall_time_ns = 400, - .data_hold_time_ns = 50, + .speed_config[0] = { + .speed = I2C_SPEED_FAST, + .scl_lcnt = 160, + .scl_hcnt = 70, + .sda_hold = 40, + } }, }" |