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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>
This commit is contained in:
Tony Huang 2023-05-19 15:52:24 +08:00 committed by Felix Held
parent 4c96747138
commit efe035183a
1 changed files with 30 additions and 0 deletions
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30
src/mainboard/google/brya/variants/yavilla/overridetree.cb
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@ -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,
}
},
}"