diff options
| author | Tony Huang <tony-huang@quanta.corp-partner.google.com> | 2023-05-19 15:52:24 +0800 |
|---|---|---|
| committer | Felix Held <felix-coreboot@felixheld.de> | 2023-05-22 12:44:38 +0000 |
| commit | efe035183a1310c3bafc1b0ce6dbb20efc4ad949 (patch) | |
| tree | 22ca5a3348892325fafe6913fb3f68ab15f75c65 /src/mainboard | |
| parent | 4c967471383ab18895c4a25615b75a6aba15686f (diff) | |
mb/google/nissa/var/yavilla: Config I2C frequency
Measured the I2C frequency meets spec
1. I2C0 (TPM): 976.1 Khz
2. I2C1 (TouchScreen); 394.0 Khz
3. I2C2 (WCAM); 377.9 Khz
4. I2C3 (Audio): 390.0 Khz
5. I2C5 (Touchpad): 389.3 Khz
BUG=b:283374537
BRANCH=firmware-nissa-15217.B
TEST=emerge-nissa coreboot
and check all I2C devices measurement result
Change-Id: If6e3a4a2b1ac642561015a290e6579238c3c2b1b
Signed-off-by: Tony Huang <tony-huang@quanta.corp-partner.google.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/75353
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Derek Huang <derekhuang@google.com>
Diffstat (limited to 'src/mainboard')
| -rw-r--r-- | src/mainboard/google/brya/variants/yavilla/overridetree.cb | 30 |
1 files changed, 30 insertions, 0 deletions
diff --git a/src/mainboard/google/brya/variants/yavilla/overridetree.cb b/src/mainboard/google/brya/variants/yavilla/overridetree.cb index 447121bc81..6e6e0a9164 100644 --- a/src/mainboard/google/brya/variants/yavilla/overridetree.cb +++ b/src/mainboard/google/brya/variants/yavilla/overridetree.cb @@ -67,18 +67,48 @@ chip soc/intel/alderlake .i2c[0] = { .early_init = 1, .speed = I2C_SPEED_FAST_PLUS, + .speed_config[0] = { + .speed = I2C_SPEED_FAST_PLUS, + .scl_lcnt = 56, + .scl_hcnt = 30, + .sda_hold = 7, + } }, .i2c[1] = { .speed = I2C_SPEED_FAST, + .speed_config[0] = { + .speed = I2C_SPEED_FAST, + .scl_lcnt = 158, + .scl_hcnt = 79, + .sda_hold = 30, + } }, .i2c[2] = { .speed = I2C_SPEED_FAST, + .speed_config[0] = { + .speed = I2C_SPEED_FAST, + .scl_lcnt = 158, + .scl_hcnt = 79, + .sda_hold = 7, + } }, .i2c[3] = { .speed = I2C_SPEED_FAST, + .speed_config[0] = { + .speed = I2C_SPEED_FAST, + .scl_lcnt = 158, + .scl_hcnt = 79, + .sda_hold = 7, + } }, .i2c[5] = { .speed = I2C_SPEED_FAST, + .speed_config[0] = { + .speed = I2C_SPEED_FAST, + .scl_lcnt = 158, + .scl_hcnt = 79, + .sda_hold = 40, + } }, }" |